Rosalind Franklin and Maurice Wilkins use X ray crystallography technique to study the physical structure of DNA. Francis Crick and James Watson used the X ray diffraction data to study the double helix structure of DNA.
The hereditary material in humans and nearly all other organisms is DNA, or deoxyribonucleic acid. The DNA of nearly every cell in a person's body is the same. The majority of DNA is found in the nucleus of the cell, but a small amount can also be found in the mitochondria. Mitochondria are cell structures that convert food energy into a form that cells can use. DNA stores information in the form of a code composed of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA is made up of approximately 3 billion bases, with over 99 percent of those bases being the same in all people.
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Compare and contrast purebred and crossbred breeding options. Include the advantages and disadvantages of each breeding system. Also include the different types and kinds of each system.
*Not Bio. Food Animal Science.
Need ASAP
Purebred breeding refers to the mating of two individuals that are homozygous for a specific trait or set of traits. This means that both parents are of the same breed and possess the same genetic characteristics. The offspring produced from purebred breeding will be genetically identical to the parents, which allows for consistent and predictable traits such as size, growth rate, and meat quality.
Crossbreeding, on the other hand, refers to the mating of two individuals that are of different breeds or genetic lines. This results in offspring that possess a combination of the traits of both parents, which can lead to increased genetic diversity and hybrid vigor. Hybrid vigor refers to the improved performance of the offspring compared to the average of the performance of the parents. This can result in improved growth rate, feed efficiency, and disease resistance.What are their advantages and disadvantages?Purebred breeding has advantages such as predictability, consistency, and uniformity in traits, making it easier to select for specific characteristics. Also, it can be useful for preserving specific breeds or genetic lines.
Crossbreeding has advantages such as increased genetic diversity, hybrid vigor, and improved performance in traits. Also, it allows to take advantage of the best traits from different breeds.
It is important to note that different types of crossbreeding systems exist, such as rotational crossbreeding, terminal crossbreeding and backcrossing. Rotational crossbreeding refers to a system in which different breeds are used in succession, while terminal crossbreeding refers to a system in which a specific breed is used as the terminal sire. Backcrossing refers to the mating of a crossbred animal with one of its purebred parents.
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which of the following is true? select one: a. the efferent division control voluntary actions, while the afferent division control involuntary actions. b. both the afferent and efferent division control voluntary action. c. the efferent division controls involuntary actions, while the afferent division controls voluntary actions. d. both the afferent and efferent division control involuntary action.
The following is true : b. both the afferent and efferent division control voluntary action.
What is afferent and efferent division control?The CNS receives impulses from the peripheral organs through afferent or sensory division. Impulses from the CNS are sent out to the peripheral organs through the efferent or motor division to produce an effect or action.
Efferent neurons controls hearing sensitivity and protects hearing from noise through regulation of gap junctions between cochlear supporting cells.
The somatic efferent division, which includes neurons that regulate skeletal muscles, and the autonomic efferent division, which includes neurons that regulate all other organs, are additional divisions of the efferent division (collectively termed viscera).
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Once you enter the dissection or histology study areas for a certain body system, you need to first select a specific view, such as anterior or posterior, and then select a topic to study, for example muscles of the abdomen.a. Trueb. False
Once you enter the dissection or histology study areas for a certain body system, this statement is false.
Dissecting a dead animal or plant's body into its component parts allows scientists to better understand the anatomy. To ascertain a person's cause of death, pathologists and forensic doctors use autopsies.
Biology's field of histology, commonly referred to as microscopic anatomy or microanatomy, analyses the microscopic structure of living tissues. The microscopic equivalent of gross anatomy, which examines larger structures that are visible without a microscope, is histology.
Students can better grasp cell behavior and reproduction through histology, which will make cellular biology more approachable. Students can predict and comprehend organ activity and function by learning histology because tissues are the foundation of almost everything in the body.
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Is natural selection stabilizing selection?
Natural selection on multiple-gene traits might take the form of stabilizing selection, directional selection, or disruptive selection.
Natural selection is a type of disruptive selection. Organisms with intermediate attributes will have a reduced ability for reproduction as a result of disruptive selection, whereas organisms with extreme traits will be able to enhance their rate of offspring production.
Stabilizing selection is a type of natural selection in which genetic variation reduces as a population settles on a specific trait value.
Divergent natural selection is regarded as a major driving force in plant evolution, resulting in phenotypic diversity across populations utilizing different habitats.
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Determine the proportion of offspring phenotypes that would result when two merle dogs mate, if one dog is true-breeding for the long-coat trait and the other dog is true-breeding for the short-coat trait. a. 0
b. 1/16
c. 1/8
d. 3/16
e. 1/4
f. 3/8
g. 1/2
h. 3/4
b. 1/16 the proportion of offspring phenotypes that would result when two merle dogs mate, if one dog is true-breeding for the long-coat trait and the other dog is true-breeding for the short-coat trait.
How many gene pairs are involved in cow coat colour inheritance?All cattle are black, red, or white in hue (Shorthorn type of white). Because all cattle have two fundamental colour genes, this results in six genetic combinations. (Table 1). gene for white (r), resulting in a black-colored person having one gene for black and one gene for white.
If both parents are heterozygous (Ww), any of their kids has a 75% probability of having a widow's peak (see figure). To find all potential genotypic pairings in the parents, a Punnett square might be employed. There are a few major differences in a pedigree that portrays a dominantly inherited characteristic.
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21.5C51 H98 06 + 145 02 ........ ....... 102 CO2 + 98 H2O The above equation shows an oxidation reaction of food substances.
a) What do you understand by the term respiratory quotient?
b) Determine respiratory quotient of the oxidation of food substances.
c) Identify the food substances.
Answer:
respiratory quotient is the ratio of the amount of carbon dioxide produced to that of oxygen consumed
crossing over is thought to be evolutionarily advantageous because it continually shuffles genetic alleles into novel combinations. it was thought that y-linked genes might degenerate because they lack homologous genes on the x chromosome with which to recombine. however, when the y chromosome was sequenced, scientists discovered that eight large regions are homologous and several genes are duplicates. explain how this might be beneficial.
Since there is only one Y chromosome in humans, any gene defects cannot be repaired during meiosis by partnering with a homologous chromosome.
In order to preserve the integrity of the chromosome, duplicate genes that are identical to one another are present.
Homologous chromosomes are those that pair with other organisms and share identical DNA (deoxyribonucleic acid) sequences, lengths, locations, and centromere positions. The homologous pair's respective chromosomes come from the mother and father, respectively.
The maternal chromosome of the homologous chromosome couples with the paternal chromosome during meiosis. Genetic recombination happens when homologous chromosomes cross over with each other. Recombination produces genetic diversity as a result.
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put these 4 structures in size order from largest to smallest: glucose molecule, cell, dna molecule, gene where do organisms get new dna from?
when compare to cell glucose molecule is very small as the cell contains the organelles producing glucose. when compare to gene, DNA molecule is very bigger as it contains more gene in it.
Prokaryotic cells are much smaller than eukaryotic cells, which have diameters ranging from 10 to 100 m. Because of their small size, ions and organic molecules that enter prokaryotes quickly diffuse to other parts of the cell. Similarly, wastes produced within a prokaryotic cell can diffuse out quickly. This is not the case in eukaryotic cells, which have evolved structural modifications to improve intracellular transport. In general, all cells, whether prokaryotic or eukaryotic, must be small in size. Consider a typical cell's area and volume. Not all cells have a spherical shape, but the majority do.
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a teacher rolls a six-sided number cube to determine which group of students will make a presentation. what is the theoretical probability that the teacher will roll the number 4?
Answer:
A six-sided number cube has six equally likely outcomes, numbered 1 through 6. Therefore, the theoretical probability of rolling a specific number, such as 4, is 1/6 or approximately 0.1667. This means that if the cube is rolled many times, the number 4 would be expected to come up approximately 1/6 of the time.
Explanation:
Which of these would likely be the most immediate result if oxygen levels in the Bay decreased by 90%
If oxygen levels in the Bay dropped by 90%, the most obvious effect would probably be a decline in fish numbers.
All of the Chesapeake Bay's living things, including the fish, crabs, and worms that burrow into the muddy bottom, require oxygen to thrive just like people do. The majority of scientists concur that dissolved oxygen levels in the Bay must be at least 5.0 mg/L for organisms to survive and grow. However, an animal's oxygen requirements vary based on its size, complexity, and environment.
Worms and clams require dissolved oxygen concentrations of at least 1 mg/L to survive in the muddy bottom of the Bay, where oxygen levels are naturally low.
Dissolved oxygen requirements for bottom-dwelling fish, crabs, and oysters are 3 mg/L or higher.
Migratory fish that are spawning, along with their eggs and larvae, require up to 6 mg/L throughout these delicate life stages.
More oxygen can be held in water the colder it gets. The amount of oxygen that may dissolve in the water decreases as it gets warmer. Salinity plays a significant role in determining the volume of oxygen that a body of water can contain, with fresh water having a higher capacity.
When there are excessive amounts of bacteria or algae in the water, oxygen levels may also be diminished. Once the algae have completed their life cycle and have passed away, bacteria eat them. The bacteria also ingest the oxygen dissolved in the water during this process of decomposition. This can result in lower physiologically accessible oxygen levels, which, in some situations, can cause fish deaths and the demise of other aquatic species.
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Somebody please help me!
It’s due tomorrow!! Thanks
Answer:
All of these are part of the central nervous system
Explanation:
All three types of neurons—relay, motor, and sensory—are part of the central nervous system. Relay neurons carry signals from one part of the nervous system to another, motor neurons carry signals from the brain to the muscles, and sensory neurons carry signals from the senses to the brain. Together, these neurons form a complex network that allows the body to communicate with itself and the environment.
What are 4 examples of environmental influences?
The 4 examples of environmental influences are temperature, pollution, parasites, and poor infrastructure.
The physical concept of temperature indicates in numerical form how hot or cold something is. One of the most widespread and significant physical elements in an organism's surroundings is temperature. It is a gauge for the typical speed of atoms and molecules moving at random; the greater the temperature, the quicker the action.
Environmental toxins can contribute to conditions like cancer, and lung diseases. Individuals with less income are mainly to reside in contaminated locations and have access to contaminated water. Pollution greatly affects to those who have a weaker immune system, or pregnant women, kinds, and aged people.
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the rn is to administer 900,000 units penicillin im.the available drugis in a multidose 15ml vial, which contains 600,000 units/ml.how many mlshould be administered?
The RN is to administer 900,000 units of penicillin IM. The available drug is in a multidose 15ml vial containing 600,000 units/ml. 1.5 ml of medicine should be given.
To determine how many milliliters of the penicillin solution should be administered, you need to divide the total units of penicillin required (900,000 units) by the concentration of the solution (600,000 units/ml).
900,000 units / 600,000 units/ml = 1.5 ml
So, 1.5 ml of the penicillin solution should be administered.
It is important to note that this calculation is based on the assumption that the patient is able to receive the full 900,000 units of penicillin as prescribed. The healthcare provider should also consider other factors such as the patient's allergies, medical history, and other medications before administering any medications.
Also, it is important to verify the concentration of medication and the expiration date of the vial before administering any medication.
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considering genetic diversity, how might the absence of sexual reproduction make this domesticated species vulnerable to infectious agents?
The absence of sexual reproduction might contribute to the vulnerability of this domesticated species to infectious agents because without sexual reproduction.
What are Infection?The population of this species would obviously stop increasing, and with infectious agents already attacking their population, without the support of sexual reproduction.
Hereditary refers to something that can or will be passed on from parents to children. Genetic variations, or variations in your DNA, may run in your family.
Health may be impacted by some. Individuals with specific genetic variations may be at an increased risk of contracting a disease compared to the general population.
Therefore, The absence of sexual reproduction might contribute to the vulnerability of this domesticated species to infectious agents because without sexual reproduction.
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6) unlike most bony fishes, sharks maintain body fluids that are isoosmotic to sea water. they are therefore considered by many to be osmoconformers because of the unusual way they maintain homeostasis. they osmoregulate by a) using their gills and kidneys to rid themselves of sea salts. b) monitoring dehydration at the cellular level with special gated aquaporins. c) tolerating high urea concentrations that balance internal salt concentrations to sea water osmolarity. d) synthesizing trimethylamine oxide, a chemical that speeds salt removal from cells. e) possessing a special adaptation that allows
Putting up with high urea levels that balance internal salt levels with sea water osmolarity.
Describe homeostasis:Homeostasis is a self-regulating process that allows an organism to retain internal stability while adapting to shifting external situations. It has emerged as the key unifying idea of physiology.
The stable internal, external, and chemical conditions that are maintained by biological systems are known as homeostasis. This is the state in which the organism is working at its best and involves maintaining a number of parameters—including body temperature and fluid balance—within predetermined ranges.
Every organ system of the body is involved in homeostasis. Similar to how no single organ system of the body functions independently, the regulation of body temperature requires at the very least the collaboration of the circulatory, neurological, musculoskeletal, and integumentary systems.
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A biologist examines a single-celled organism isolated from a hot spring. the organism is a photosynthetic halophile that uses the pigment bacteriorhodopsin. in which kingdom should the biologist classify the organism?
A biologist studying a single-celled organism isolated from a hot spring would likely classify the organism in the kingdom Protista.
This is because the organism is a photosynthetic halophile, which means that it uses light energy to produce food and thrives in high salt environments. The use of the pigment bacteriorhodopsin also suggests that the organism is a photosynthetic organism, further supporting the classification in the Protista kingdom.
Protists are a diverse group of organisms that can be both unicellular and multicellular, and can be either autotrophic or heterotrophic. The Protista kingdom encompasses a wide range of organisms, including algae, protozoa, and slime molds. The diversity within the kingdom is a reflection of the diversity of life on Earth and the many different ways in which organisms can adapt to survive in different environments.
The organism being examined by the biologist is likely a member of the phylum Cyanobacteria, also known as blue-green algae. Cyanobacteria are a type of photosynthetic bacteria that are known to thrive in extreme environments such as hot springs and salt flats. They are also known to use bacteriorhodopsin as a pigment, which helps to absorb light energy for photosynthesis. This pigments also help to survive in high salt environments.
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work as liaison between sensory and motor neurons by mediating their impulses
Interneurons are the type of neurons which work as liaison between sensory and motor neurons by mediating their impulses.
The brain and nervous system are made up of neurons, which are cells. They are the fundamental components that transmit and receive impulses, allowing us to move our muscles, sense our environment, think, create memories, and do a lot more. Interneuron connections between spinal motor and sensory neurons make up the intermediary interneurons. Interneurons can communicate with one another to construct circuits of varying complexity in addition to sending signals between sensory and motor neurons. Like motor neurons, they have many poles. The differentiation between different neuronal types is significantly more nuanced in the brain. In contrast to the spinal cord, where we could easily differentiate neurons depending on their function, the brain does not do this.
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A student is comparing four different types of cells and observes that one contains many more mitochondria than the others. The student should conclude that the cell with the greatest number of mitochondria is most likely which of the following? O Epidermal cellO Muscle cell O Fat cellO Sebaceous gland cell
Muscle cells have a lot of mitochondria because they need the ATP they produce to contract and move bones, and therefore limbs.
What is muscle cells?When referring to either a cardiac muscle cell or a smooth muscle cell, a muscle cell is also referred to as a myocyte. A muscle fiber is a long, threadlike skeletal muscle cell with numerous nuclei. Myoblasts are embryonic precursor cells that grow into muscle cells. Muscle cells have a lot of mitochondria because they need the ATP they produce to contract and move bones, and therefore limbs. Myocytes, or muscle cells, are the cells that make up muscular tissue. In the human body, there are three kinds of muscle cells: cardiac, skeletal, and smooth. Because of their lengthy and fibrous nature, cardiac and skeletal myocytes are commonly referred to as muscle fibers.
Here,
Muscle cells have a lot of mitochondria because they need the ATP they make to contract and move bones, and therefore limbs.
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Do all scientific studies start with observations that lead to questions?
It is not mandatory that all scientific studies that start with observations that lead to questions. Scientific inquiries can be carried out in many different ways.
Scientific study is the combination of scientific theory, models, experiments as well as physical situations. These are the well planned studies that can be theoretical or experimental or both. A scientific study is the subject to logic and reasoning.
Observation is the act of carefully watching out for something and collecting information and data regarding it. Observations is amongst the most essential trait for successful scientific studies. Observations require the use of all human senses.
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Suppose there are two genes on two different chromosomes, one gene called G and the other called D. An individual has the genotype GgDd. Which of the following drawings correctly shows cells in this individual after DNA replication but before cell division of the first meiosis
As there is no crossing over takes place drawings correctly shows cells in this individual after DNA replication.
Chromosome - These are condense form of the genetic materials found always in a pair having one chromatid at each chromosomes, But during cell divison the genetic materials replication occurs as a result the no. of chromosomes remain same but change is chromatid no. becomes double that means , each chromosomes contains extra copy of chromatid materials .
Before replication the genotype given is GgDd which are present in four different chromosomes as given in below picture , but after replication the genotype will remain the same but having one extra chromatid having same gene as that of parents chromosomes.
Hence, the correct option is A.
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how many chromatids are in a human cell about to start meiosis?
Each cell contains 46 unique chromosomes. There are 46 chromosomes in total after replication, each containing 92 distinct chromatids.
Which phase do the 92 chromatids belong to?
Prophase: The 92 sister chromatids are housed within the nuclear envelope of the cell, which starts to degrade during prophase. Only found in animal cells, the centrioles split apart and migrate to opposing ends of the cell.
How many chromatids and chromosomes are present in each meiotic stage?
The creation of four cells with two fewer chromosomes is the goal of meiosis. Chromosome number 46 is present here at the start of meiosis (diploid). The resultant cells or gametes after meiosis have 23 chromosomes (haploid).
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In evolutionary terms, an organism's fitness is measured by its mutation rate to gain new alleles stability in the face of environmental change contribution to the gene pool of the next generation ability to gain food in its environment ability to compete with other members of the species for a mate
An organism's fitness is the ability to survive and reproduce in its environment, including factors such as gaining food, competition, mutation rate, adaptability, and contribution to the gene pool of the next generation.
One of the key factors that contribute to an organism's fitness is its ability to find food. Organisms that are able to find and consume food in their environment are more likely to survive and reproduce than those that cannot.
Additionally, an organism's ability to compete with other members of the same species for a mate is also important. Organisms that are able to attract and secure a mate are more likely to reproduce and pass on their genetic traits to the next generation.
Another important factor that contributes to an organism's fitness is its ability to adapt to changes in the environment. Organisms that are able to adapt to changes in their environment, such as changes in temperature or the availability of food, are more likely to survive and reproduce than those that cannot.
Additionally, an organism's mutation rate also plays a role in its fitness. Organisms with a high mutation rate may be more likely to adapt to new environments and survive in the long term.
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the technique of severing the connections between the frontal lobe and the thalamus is called: question 25 options: lobotomy electroconvulsive therapy rational emotive therapy phrenology
The technique of separating the connections between the frontal lobe and the thalamus is called: lobotomy.
What is Lobotomy?A lobotomy is basically a kind of brain surgery which gained popularity as a remedy for mental health issues arround the year 1930s. lobotomy entails cutting off the frontal lobe's communication with other regions of the brain. On patients suffering from illnesses like schizophrenia and depression, doctors carried out lobotomy surgery.Frontal lobe :As the largest lobes in the human brain, similarly the frontal lobes are the most frequently damaged by traumatic brain injury. The frontal lobes are crucial for controlling higher order executive functions, expressive language, and voluntary movement of the body.
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pediatric ear tubes can be placed through the tympanic membrane during a procedure called .
Pediatric ear tubes can be placed through the tympanic membrane during a procedure called Tympanostomy (Ear Tubes).
Tympanostomy (Ear Tubes) is the surgical placement of ear tubes. Ear tubes (tympanostomy tubes, ventilation tubes, and pressure equalization tubes) are microscopic cylinders that are surgically placed into the eardrum. An ear tube establishes an airway that ventilates the middle ear and keeps fluids from accumulating behind the eardrum.
Babies as little as 6 months old can have ear tubes placed. Ear tubes are often extruded (naturally driven out as the child's ear grows) from the ear drum between six and 18 months following placement.
Ear tubes are hollow cylinders that are placed into your eardrum. They're frequently utilized in children and adults with chronic middle ear infections or infections that haven't responded to therapy.
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The scientific names of three animals leopard, wolf and lion in the family carnivora are; Panthera pardus, Canis lupas and Panthera leo respectively.
a) Why are scientific names given in Latin?
b) What does Canis refer to?
c) Giving a reason, state the organisms that are MOST closely related.
Answer:
a) Scientific names are given in Latin because Latin is a dead language and therefore does not change over time. This helps to ensure that scientists all over the world are able to communicate about the same organism using a standardized and unchanging system of naming.
b) Canis refers to the genus of the animal, in this case the wolf, which is a member of the Canidae family, which includes domestic dogs, coyotes, and jackals.
c) The organisms that are most closely related are Panthera pardus and Panthera leo, as they are both members of the Panthera genus. This is because they have a more recent common ancestor than the wolf (Canis lupus) and are more closely related on the evolutionary tree.
Explanation:
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a) Scientific names are given in Latin and other languages derived from Latin because it's a standardized language, meaning all biologist across the world can communicate and talk about organisms when everybody understands the same language.
b) Canis refers to the wolf, a genus in the canine family.
c) Panthera leo and Panthera pardus are most closely related because they are both part of the cat family, the Panthera genus.
why does the heart automatically adjust the flow of blood to match activity levels? a. extreme activity damages blood cells and the body needs replacements. b. the heart requires more oxygen when exercising. c. it reduces the level of oxygen in the blood. d. organs and muscles require mo
Because stressed organs and muscles need more blood, the heart automatically modifies the blood flow.
Blood flow to correspond with levels of activity.The effector organs of movement, the muscles, receive a proportionately greater volume of blood ejected by the heart when the organism is required to produce energy.
It makes sense that the heart would have to work harder and receive more blood.
With this knowledge, we can draw the conclusion that the heart pumps more blood to meet the organs' needs. The main organ responsible for moving blood throughout the body is the heart. By consuming more oxygen, the heart automatically modifies blood flow to correspond to activity levels.
When there is enough oxygen in the air, the heart works properly. The body needs more energy during a period of activity or exercise to meet the demands of the activity. In order to increase blood flow and meet the oxygen demand, the heart adjusts by absorbing more oxygen.
The heart distributes the proper amount of blood to the body's various organs so that no physiological issues arise.
It makes sense that the heart would have to work harder and receive more blood.
With this knowledge, we can draw the conclusion that the heart pumps more blood to meet the organs' needs.
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[Anatomy of the eye] "Sleepers" are crusty collections of tears and dust that form in the _____ ______ in the morning.
"Sleepers" are crusty collections of tears and dust that form in the eye lid in the morning.
What is a sensory system?In Medicine, a sensory system can be defined as components of the central nervous system which comprise the brain, pathways, (neural tissues) and sensory neurons that are responsible for sensory functions, observations, perception and processing of sensory information (stimulus).
What is the eye?In Science, the eye is one of the five (5) sense organs found in living organisms such as vertebrates or mammals. Additionally, the nerve cells within the eye helps a living organism to sense and transmit light, pain, and other noxious sensations to the sensory system.
In this context, we can reasonably infer and logically deduce that the crusty collections of tears and dust that are formed in the eye lid in the morning are generally referred to as sleepers, eye mucus, eye boogers, or eye discharge.
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QUESTION 25 if the papilla of a hair follicle is destroyed the hair produced by the follicle will change from terminal to vellus the color of the hair will become lighter the texture of the hair will become coarser. the follicle will lose its blood supply. hair production will not be affected QUESTION 26 are fine hairs that lack pigment and cover much of the body surface. Vellushairs Votes Follicular hairs Terminal hairs QUESTION 27 hate coarse psemented a TERMINE Te QUESTION 28 ON glands Perspiration is produced by O ceruminous O apocrine sweat merocrine sweat sebaceous mammary QUESTION 29 glands are located wherever hair follides exist and tweet and are found only sweat glands are widely distributed across the body surface. In a few areas." Sebaceous merocrine apocrine e Apocrine merocrine sebaceous Merocrine sebaceous: apocrine Merocrine apocrine sebaceout Apocrine sebaceous matocrine QUESTION 30 att ta be prevented by Adele sunt Biotintake of cholecalciferol olding the Auright and detary intake of cholecalciferol et intake of cholecalciferol and avoiding unit QUESTION 31 Identify the two major components of the cutaneous membrane. O dermis and epidermis dermis and subcutaneous layer epidermis and subcutaneous layer dermis and the cutaneous plexus epidermis and the cutaneous plexus OOO QUESTION 32 Why does exposure to sunlight or sunlamps darken skin? UV radiation stimulates melanocytes to produce more meanin UV radiation stimulates melanocytes to produce more melatonin. UV radiation stimulates keratinocytes to produce more carotene, UV radiation stimulates keratinocytes to produce more Keratin UV radiation stimulates melanocytes to produce more melanin and keratinocytes to produce more Keratin QUESTION 33 which ype of such usually requires skin rafing Whur Free but because the epidermis datased Reseaegret burns because the tissue camaa that angel secote buns because the tissue dane This because the epidermis This degree of cecause the remote
The blood supply to a hair follicle will be cut off if the papilla is removed. A papilla is a mouth protrusion on a bodily component or tissue.
The place of Papilla:The tongue's upper surface has tiny structures called lingual papillae that gives it its distinctively rough texture. The four varieties of epithelium on the host organism are categorized as ratio of the number (or vallate), affecting the original, elongated, and foliate as a result of their distinct structural differences.
What use does the papilla serve?The tiny bumps mostly on top of your lips called papillae help you hold foodstuff while ones teeth are eating it. Their second unique function is to house your taste buds, which enable you to taste anything from tart tomatoes to sweet peaches.
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column shaped cells that lie just under the epidermis ?
Palisade cells, which are located just beneath the epidermis, are more column-like.
The mesophyll, a layer of cells within the leaf, is present. The palisade layer and the spongy layer are the two layers into which mesophyll can be split. The palisade layer and lower epidermis are separated by the spongy layer, which is more loosely packed and has a more column-like appearance. Gas exchange is made possible by the air gaps between the spongy cells. Chloroplasts are abundant in the palisade and spongy mesophyll cells, which are where photosynthesis actually takes place.
In the leaves of plants that have them, palisade cells—which have the most chloroplasts per cell and serve as the principal site of photosynthesis, optimizing energy production by converting light energy to the chemical energy of carbohydrates—are the major site of photosynthesis.
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based on mendel's laws you've learned so far, why didn't the allele for yellow color show in the f1 generation?
Yellow color is a recessive trait, so it would only show in the F1 generation if both parents had the allele for yellow color.
What is Mendel's laws?Mendel's laws are the foundation of genetics. They were first proposed by the Austrian monk and scientist Gregor Mendel in 1865. Mendel's laws describe how genetic traits are passed from parent to offspring.
The first law, known as the law of segregation, states that for each inherited trait, an organism receives one variant from each of its parents, and that these variants separate during the formation of gametes, or sex cells.
The second law, the law of independent assortment, states that when different traits are inherited, the separation of one trait does not affect the separation of another. This means that the inheritance of one trait does not influence the inheritance of another trait. Together, these laws form the basis for understanding the transmission and expression of genetic traits.
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