False that humans are designed to breathe through the mouth when possible, which filters the air on the way into the lungs.
What is the main breathing organ of body ?Lungs. your lungs are sponge-like organs. Every time you breathe they filter oxygen from the air through tiny vessels into the blood. It is then carried to the heart to be pumped round your body.
Air enters the respiratory system through the nose or the mouth, then travels down a pathway to the lungs. In the nostrils, air gets warmed and moistened. Tiny hairs in the nose called cilia filter out dust and other particles
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Why mangrove forests are so productive?
Answer:
The high NPP of mangrove forests may be partly due to their high litter production rates”(135). Low soil respiration seen in mangrove forests suggests that mangroves are good at sequestering carbon dioxide (135).
Explanation:
The extent to which differences in intelligence among a group of people are attributable to genetic factors is known as the ______ of intelligence.
a. neural plasticity
b. factor analysis
c. predictive validity
d. heritability
The extent to which differences in intelligence among a group of people are attributable to genetic factors is known as the heritability of intelligence. Thus, the answer is option D.
Heritability describes how much of the difference in phenotypes among animals treated similarly is due to genetics. It is the ratio of genetic variance to phenotypic variance and ranges from 0 to 1.
It is the most basic connection from phenotype to DNA and genetic evaluation. Heritability, amount of phenotypic variation in a population that is attribute to individual genetic differences.
Heritability is a measure of how well differences in people's genes account for differences in their trait. Traits can include characteristics such as height, eye color, and intelligence, etc.
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In order for a new variant to become dominant in the population, it must have a(n) _________________ that results allows it to be more successful.
Group of answer choices
O Hormone
O replication
O expression
O mutation
In order for a new variant to become dominant in the population, it must have a(n) mutation that results allows it to be more successful.
A more or less permanent change to the genetic code (the genome) of a cell in a living thing or of a virus that may be passed on to the offspring of the original cell or virus. (See Heredity: The Physical Basis of Heredity for further information; genomes of living things are all made of DNA, but viral genomes can be made of DNA or RNA.) A somatic mutation—a change in the DNA of a body cell of a multicellular organism—can be passed on to progeny cells through DNA replication, resulting in a sector or patch of cells with defective function, such as cancer.Germinal mutations, which occur in the egg or sperm cells, can cause an individual's progeny to have all of their cells have the mutation. This frequently results in some catastrophic dysfunction, like in the case of a human genetic disorder like cystic fibrosis.
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multicellular organisms are composed of a variety of living structures that are formed when cells differentiate. how could the living structure pictured below be classified?
The smallest unit in biology that is capable of independent living and that comprises all living things as well as the body's tissues is cell.
Membrane, nucleus, cytoplasm - cell's basic structural parts. The membrane, which encloses the cell, regulates the molecules that enter and exit the cell. After examining a piece of cork under a very early microscope, Robert Hooke proposed the name "cell" in 1665, derived from the Latin cella, which means "storeroom or chamber." Furthermore, it is reported that he compared the rectangular spaces to some monastic cells.
The complete question is:
Multicellular organisms are composed of a variety of living structures that are formed when cells differentiate. How could the living structure pictured below be classified?
A.cell
B.organ
C.organ system
D.tissue
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A female Drosophila fly is heterozygous for three recessive pigmentation mutations called pl, bk, and tp. pl is associated with purple eyes, bk is associated with a black body, and tp is associated with transparent wings. A geneticist crosses this fly to a male purple, black, and transparent fly and obtains the 1000 progeny given in the table. Phenotype Number Phenotype Number black 50 transparent 199 wild type 200 black, transparent 43 purple, transparent 52 purple, black, transparent 206 purple, black 205 purple 45 Based on the table, which genes are linked? A) pl and bk B) bk and tp C) pl and tp Calculate the distance between the linked genes
In the given table of female Drosophila fly three recessive pigmentation mutations the linked genes are pl and bk. So, correct option is A.
What dp you mean by mutation?A mutation is a change in the DNA sequence of an organism's genome that can occur spontaneously or as a result of exposure to certain environmental factors. Mutations can occur in any part of the DNA, including the coding regions (exons) that contain the instructions for making proteins, and the non-coding regions (introns) that do not.
The genes pl, bk, and tp are associated with the pigmentation mutations purple eyes, black body, and transparent wings, respectively. The geneticist crosses a heterozygous female fly with a purple, black, and transparent male fly and obtains 1000 progeny with various phenotypes, as listed in the table.
The data provided shows that genes pl and bk are linked. We can see that the phenotype "purple, black, transparent" (206 progeny) and "purple, black" (205 progeny) are present in the progeny, while the phenotype "transparent" (199 progeny) is not. This indicates that the pl and bk genes are located on the same chromosome, and are inherited together.
The phenotype "purple, transparent" (52 progeny) also indicate that bk and tp are linked.
To calculate the distance between the linked genes, we can use the method of recombination frequency. The recombination frequency (RF) is the percentage of progeny that exhibit recombination, or a break in linkage between the genes. In this case, the RF between pl and bk is (43+206)/1000 = 0.249, or 24.9%.
Similarly, the RF between bk and tp is (206+43)/1000 = 0.249 or 24.9%.
The recombination frequency is inversely proportional to the distance between the genes, so the closer the genes are located, the lower the RF will be. Therefore, the distance between the genes pl and bk, as well as bk and tp is relatively close.
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which of the following is chemically similar to amphetamine, causes brain cells to release extra amounts of serotonin, and produces a rush of energy with users saying that it makes them feel closer to others and heightens sensory experiences?
Stimulants are chemically related to amphetamine.
Stimulants, also known as uppers, counteract the effects of fatigue on both mental and physical tasks. Stimulants at therapeutic doses can cause euphoria, prolonged wakefulness, and appetite loss. When large doses of stimulants are taken, these effects are greatly amplified.
Amphetamine (derived from alpha-methylphenethylamine) is a powerful central nervous system (CNS) stimulant used to treat attention deficit hyperactivity disorder (ADHD), narcolepsy, and obesity. It is also widely used as a recreational drug. Amphetamine was discovered in 1887 and has two enantiomers. Dextroamphetamine and levoamphetamine are two types of amphetamines. Amphetamine refers to a specific chemical, the racemic free base, which is equal parts of the two enantiomers in their pure amine forms.
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two of the following free body diagrams could represent an object moving at a constant velocity. identify the 2 and justify why.
A free-body diagram is a useful means of describing and analyzing all the forces that act on cell a body to determine equilibrium according to Newton's first law .
What are the 4 types of diagram?Of the diagram types this post covered, mind maps, flowcharts, fishbone diagrams, hierarchy/organizational charts, Robert Hooke discovered cells in 1665. and SWOT analysis diagrams are the most common diagram types.
Where can I make a diagram?Microsoft Visio is one of those options, but if you're looking for a tool that's not from Microsoft, here's a list of other options.He observed a piece of cork under a compound microscope Lucidchart. Lucidchart allows you to create diagrams and flowcharts without installing any software easily. Draw.io. Cacoo. Gliffy. Sketchboard. Creately. DrawAnywher
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which of the following best explains the role of cell-to-cell communication during a response to an invasion of antigens?
Chemicals that are secreted from antigen-presenting cells then activate helper T cells. - best explains the role of cell-to-cell communication during a response to an invasion of antigens.
What is antigen-presenting cell?
Antigen presentation, also known as antigen presentation, is the act of a cell displaying an antigen bound by major histocompatibility complex (MHC) proteins on its surface. These complexes may be recognised by T cells via their T cell receptors (TCRs). Antigens are processed by APCs before being shown to T lymphocytes.
Almost all cell types have some capacity to express antigens. They can be present in several kinds of tissues. Professional antigen-presenting cells, such as macrophages, B cells, and dendritic cells, present foreign antigens to helper T cells, whereas virus-infected cells are able to present cytotoxic T cells with internal antigens. Antigen presentation depends on various specialised signalling molecules on the surfaces of both APCs and T lymphocytes in addition to the MHC family of proteins.
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which of the following is the most important criterion for determining whether an ecological relationship is a symbiosis? group of answer choices whether both parties benefit whether the parties are the same species the degree of proximity between the two parties the number of parties in the interaction
A measure of degree of proximity two parties are to one another is the most important criterion for determining whether an ecological relationship is a symbiosis.
Symbiosis is defined as an intimate, long-term partnership between two or more distinct biological species. This relationship can be symbiotic (mutualistic), in which both parties engaged profit from the interaction, or it can be parasitic, in which one party profits while the other suffers.
A symbiotic connection is one in which both species benefit and is characterized by close ecological ties between individuals of two or more distinct species. Algae and fungi work together in symbiosis to form lichen.
There are four types of symbiotic relationships: parasitism, mutualism, commensalism, and competition. Let's think about a natural ecosystem like the ocean to examine these relationships. The variety of species in ocean settings is well-known.
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inside your eye are two kinds of sensory nerves, shaped like spheres and pyramids, which variously distinguish dim light and motion or color and fine detail.
TRUE - Inside your eye are two types of sensory nerves, shaped like spheres and pyramids, that distinguish between dim light and motion or color and fine detail.
The photoreceptors in the retina are classified as rods or cones based on their shape. These cells are actually specialized neurons capable of detecting light.
Six cranial nerves innervate the eyes' motor, sensory, and autonomic structures. The optic nerve (CN II), oculomotor nerve (CN III), trochlear nerve (CN IV), trigeminal nerve (CN V), abducens nerve (CN VI), and facial nerve are the six cranial nerves (CN VII).
The optic nerve is essential for vision. It is a part of your central nervous system, which also includes your brain and spine. The optic nerve is responsible for transmitting electrical impulses from your eyes to your brain. This sensory information is processed by your brain so that you can see.
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components of e. coli e. coli cells are rod-shaped, about 2 m long and 0.8 m in diameter. the volume of a cylinder is r 2h, where h is the height of the cylinder.
Total volume of the bacterium the cell envelope occupy is 0.000628
volume of the E. coli is 3.14× 0.4²×2
= 1.0048
Total volume of the bacterium the cell envelope occupy 2× 3.24× 0.01
=0.000628
Escherichia coli, also known as E. coli, is a rod-shaped, facultatively anaerobic, Gram-negative coliform bacteria found in the lower intestine of warm-blooded animals.
Ground beef in particular can be thoroughly cooked to kill E. coli germs. The fluids of ground beef should run clear and the meat should no longer be pink. When cooking hamburgers, the thickest section of the patty should register 160 degrees on a meat thermometer; the interior of the patty should not be pink.
Complete question:
E. coli cells are rod shaped, about 2 mm long and 0.8 mm in diameter.The volume of a cylinder is ?r2h, where h is the height of the cylinder.
E. coli has a protective cell envelope 10 nm thick. What percentage of the total volume of the bacterium does the cell envelope occupy?
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All of the following are considered to be important protein regulators of ion metabolism, EXCEPT?
A. Hemosiderin
B. Hepcidin
C. Transferrin receptor
D. Ferroportin
Option A, Hemosiderin is not considered to be an important protein regulator of ion metabolism. Hemosiderin is a protein that stores iron in cells, specifically in the liver, spleen, and bone marrow.
Hemosiderin is formed by the breakdown of hemoglobin, the protein that carries oxygen in red blood cells. Hemosiderin is not directly involved in the regulation of ion metabolism, it is more related to the storage and release of iron in the body. Hepcidin, Transferrin receptor and D. Ferroportin are considered important protein regulators of ion metabolism. Hepcidin is a hormone that regulates the amount of iron that enters the bloodstream by binding to and inhibiting the action of ferroportin, which is an iron exporter protein. Together protein these proteins are involved in regulating the amount of iron in the body, which is important for maintaining proper ion metabolism.
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the divsion of the nucleus of a eukaryotic cell is called
Answer:Mitosis
Explanation:Mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells. During cell division, mitosis refers specifically to the separation of the duplicated genetic material carried in the nucleus.
Mitosis is a nuclear division process that happens in eukaryotic cells when a parent cell splits to create two identical daughter cells. Mitosis is the separation of the duplicated genetic material contained in the nucleus during cell division.
Mitosis is the division of a single cell into two identical daughter cells (cell division).
A cell copies all of its components, including its chromosomes, and separates to generate two identical daughter cells during mitosis. Because this process is so important, the phases of mitosis are meticulously regulated by specific genes.
Mitosis is a process that produces additional cells that are genetically identical to the original cell. It plays an important part in the development of embryos, and it is important for the growth and development of our bodies as well. Mitosis produces new cells, and replaces cells that are old, lost or damaged.
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According to this graph, which of these is most important in developing the biomass of these plants?
a. Nitrates
b. Sulfates
c. Magnesium
d. Iron
The correct option is D ; Iron, Plant biomass is a type of renewable, environmentally favorable, plentiful, and clean energy.
The use of plant biomass has the potential to lessen reliance on fossil fuels while also addressing the issue of environmental contamination. Ligno-cellulosic materials can be found in the majority of agricultural, forestry, and food wastes.
Biomass is significant for commercial uses (e.g., fuel and fiber), national development planning, scientific studies of ecosystem productivity, energy and nutrient flows, and measuring the contribution of changes in forestlands (particularly tropical forestlands) to the global carbon cycle.
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which of the following types of human behavior accounts for slips and lapses with no intent to cause harm?
identify the effects of the storm surge in order to construct ways.
Pa help po pls... I really need help po. I'll mark brainliest who answered po.
Answer:
A storm surge is a rise in sea level caused by a tropical cyclone, such as a hurricane or typhoon. The effects of a storm surge can be devastating, and can include:
Flooding: Storm surges can cause severe coastal flooding, as the rising sea level can overflow low-lying areas. This can damage or destroy homes, businesses, and infrastructure.
Erosion: Storm surges can also cause significant erosion of beaches and coastal bluffs, as the powerful waves can erode the land.
Damage to property and infrastructure: Storm surges can cause damage to buildings, roads, bridges, and other infrastructure.
Loss of life: Storm surges can be fatal, as the rising sea level can trap people in flooded areas and the strong winds and waves can cause injury or death.
To construct ways for storm surge protection, there are several approaches that can be taken. These include:
Building seawalls or levees: These structures can help to protect low-lying areas from flooding by blocking the surge from entering.
Elevating buildings: Building homes and other structures on stilts or elevating them above the predicted storm surge level can help to protect them from flooding.
Creating natural buffers: Planting mangroves, dunes and other vegetation can help to absorb the energy of the storm surge and reduce its impact.
Early warning systems: Developing and maintaining early warning systems can help to alert people to the approaching storm surge and give them time to evacuate
Land-use planning: Careful land-use planning can help to avoid development in areas that are at high risk of storm surge flooding.
It's important to keep in mind that storm surge protection measures must be tailored to the specific location, and are most effective when combined with other flood protection measures such as evacuation plans and emergency response.
Which of the following statements best predicts the effect of increasing the permeability of the mitochondrial membranes to large molecules?
answer choices
ATP production will increase because of an increase in the rate at which proteins diffuse out of mitochondria.
ATP production will increase because of an increase in the mixing of mitochondrial and cytosolic substances.
ATP production will decrease because of an increase in the occurrence of uncontrolled chemical reactions.
ATP production will decrease because of an increase in the surface area of the mitochondrial membranes.
ATP production will decrease because an increase in the occurrence of uncontrolled chemical reactions best predicts the effect of increasing the permeability of the mitochondrial membranes to large molecules.
The irregularities brought on by the increased permeability of the mitochondrial membranes result in a decrease in ATP production and, ultimately, a drop. Bioenergetic crises and a slower rate of oxygen consumption are two other things that are sparked by the increase in permeability.
Mitochondrial swelling is primarily caused by changes in the cell matrix's ion homeostasis and osmotic imbalance.
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this yeast has been found in respiratory secretions, the vagina, urine, gastric washings, and the oropharynx, but is mainly thought to cause vaginitis and urinary tract infections. growth on cornmeal tween 80 agar demonstrates elongated blastoconidia that lie parallel to pseudohyphae (like logs on a stream).
Answer:
Candida kefyr (pseudotropicalis).
Explanation:
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What is the main reason that photosynthesis is impractical for humans, even if it might be possible?
Answer: We humans would need porous skin to take in carbon dioxide which plants used. Have a good day ;)
before placing the potato cores in their respective beakers, the student massed both potato samples. after 40 minutes, the student removes the potato cores and weighs them again. the student knows that potato cells are permeable to water. which of the following results will the student most likely observe in the potato core from the water-only beaker?
B) The potato in the 2M solution remained the same because it was an isotonic solution.
That method the potato possessed extra water than their surroundings and left the potato because of osmosis. the mass of the potato cores will increase in distilled water and 0.2 M sucrose due to the fact the potatoes have a decrease water capability than those solutions, inflicting water to hurry into the potatoes. This is because of the truth that the mass of the potato slice reduced after being left in a salt answer overnight. Because the water subtle in preference to the salt, we should finish that the potato isn't permeable to salt. The distilled water answer became hypotonic to the potato cells, therefore, water became stepping into the inner of the potato cells inflicting them to benefit the maximum mass.
Thus, correct option is B.
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Complete question:
In the lab, students are soaking potato cores in different sucrose solutions overnight to observe the movement of water into and out of the potatoes. Observe the picture. Which result, below, best matches the picture?
A) The potato in the distilled water doubled in mass due to the hypotonic solution.
B) The potato in the 2M solution remained the same because it was an isotonic solution.
C) The mass of the potato in the distilled water did not change because it was a hypotonic solution.
D) The potato in the 8M solution decreased in mass because the solution was hypertonic to the potato.
a cell is exposed to a substance that prevents it from dividing. the cell becomes larger and larger. this situation
Since the cell's surface area will grow as its volume does, this circumstance shouldn't give the cell any problems.
will eventually cause issues because the surface energy to volume ratio of larger cells will rise.A cell's surface area grows as the square of its radius as the radius rises, yet its volume grows as the cube of the its radius (much more rapidly). Cells have a considerably higher surface to volume ratio, which enables material to diffuse quickly and effectively throughout the volume of the cell. Bacteria and other single-celled organisms have a rod-like structure that provides them a high volume to surface area ratio. This is significant because diffusion will be used to get the glucose and oxygen the cell requires for respiration as well as to get rid of waste products from the cell.
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The synthesis of protein or carbohydrate polymers always produces which of the following as a byproduct?
a. ATP
b. Oxygen
c. Carbon dioxide
d. Urea
e. Water
The synthesis of protein or carbohydrate polymers always produces water as a byproduct.
Since protein and carbohydrate polymers are condensation polymers, water is always produced as a byproduct of their formation.
The process of connecting two smaller molecules, known as monomers, to create a larger molecule, known as a polymer, is known as polymerization. two processes may result in polymerization;
Condensation AdditionCondensation polymerization involves joining together monomers, which results in the loss of a tiny molecule like water. Additionally, no tiny molecule is lost during polymerization.
Proteins and carbohydrates are condensation polymers, which means that every time they form, a water molecule is lost.
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the supergroup of domain eukarya that has some (not all) organisms that display threadlike pseudopodia. archaeplastida
SAR Clade is the supergroup of domain eukarya that includes some (but not all) of the creatures that exhibit threadlike pseudopodia, or archaeplastida.
Which of the following protist supergroups is now recognized?The traditional definition of protists encompasses all identified major eukaryotic supergroups, or lineages, including: Excavata, Amoebozoa, Opisthokonta, and SAR group are examples of organisms (consisting of Stramenopiles, Alveolata, and Rhizaria).
Which of the species that we looked at has pseudopodia that resemble threads?Many amoebas, the majority of which have threadlike or needle-like pseudopodia, are members of the Rhizaria supergroup (Figure). In rhizarian protists, pseudopodia serve to catch and consume food particles as well as to control locomotion.
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imagine that i give a group of rats a weak dose of cocaine to observe how it affects their energy levels. later, i give those same rats a stronger dose of cocaine and once again examine their energy levels. in this experiment, all the rats received both levels of the independent variable (cocaine dosage), making this a:
This experiment is a within-subjects design. Within-Subjects Design is also known as a Repeated-Measures Design.
What is within subject design?Within-subject design is an experimental design in which each participant serves in multiple conditions of the experiment. This design eliminates the need for a control group, as each participant serves as their own control. The effects of the independent variable are tested by comparing the responses of the same subject across the different conditions. This design is advantageous because all the subjects are exposed to the same conditions, eliminating potential differences due to individual characteristics. The results from a within-subject design can be more accurate and reliable than those from between-subject designs because it eliminates the potential for confounding variables. However, this design can be more time consuming and expensive due to the need to test each subject multiple times. Additionally, the results may be affected by the order in which the conditions are presented, known as order effects.To learn more experiment design refer to:
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Based on the data in the graph, describe the maximum amount of carbon that can be sequestered using mature common oak in a managed forest of this size.
The rate of carbon sequestration in the Common Oak forest is stable from 2070 to 2130, indicating little to no extra growth since the trees were mature. As a result, the forest can store about 80,000 tonnes of carbon year.
A single mature tree will store £ 100 (0.045 metric tonnes) of carbon dioxide over the course of its existence and sequester around 48 pound (0.006 metric tonnes) of carbon dioxide annually. A mature live tree may collect more than 48 pounds of co2 in a year, which is then permanently retained in its fibres until a physical event, such as a fire or decomposition, causes the tree or wood to release it into the atmosphere. The rate of carbon sequestration in the Common Oak forest is stable from 2070 to 2130, indicating little to no extra growth since the trees were mature. As a result, the forest can store about 80,000 tonnes of carbon year.Carbon has an atomic weight of 12 (u), while oxygen has an atomic weight of 16. (u). The mass of CO2 in trees is calculated using the formula 44/12 = 3.67. Therefore, multiply the weight of the carbon in the tree by 3.67 to get the amount of carbon dioxide stored there.
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Of the Enterobacteriaceae listed below, which of the following species fails to decarboxylate lysine, ornithine, and arginine?
A. Pantoea agglomerans
B. Enterobacter aerogenes
C. Yersinia enterocolitica
D. Proteus mirabilis
Answer:B) enterobacter aerogenes
Explanation:
A young adult presenting with swelling of the parotid glands most likely has which of the following diseases:
A. Congenital Rubella
B. Rubella
C. Measles
D. Mumps
Mumps is most likely the cause of parotid gland edoema in a young adult.
What does the parotid gland do?
Major salivary glands are found in your parotid glands. There are two of them, one directly ahead of and one below each ear. Your parotid glands generate saliva (spit), similar to your other glandular tissue (submandibular and sublingual), to keep your mouth moist and to help with eating and digestion. Salivary glands called parotid gland, which are situated between the ear as well as the jaw, become painfully swollen when you have parotitis. A virus, such as the mumps, herpes, or Epstein-Barr, is the most frequent cause. Parotitis can also be brought on by bacterial infections, obesity, tumours or pebbles in the salivary glands, and tooth issues.
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How does deforestation impact people in africa?
Answer:
The first one
Explanation:
The other given answers dont really make sense when it comes to deforestation, trees help block radiation from sun so removing it will cause the ground to heat up more causing climate change.
an increase in the number of motor units activated in a skeletal muscle will cause the tension generated by that skeletal muscle to
an increase in the number of motor units activated in a skeletal muscle will cause the tension generated by that skeletal muscle to increase.
An increase in the number of motor units activated in a skeletal muscle will cause the tension generated by that muscle to increase. A motor unit is a nerve cell and the muscle fibers it innervates. When a nerve impulse arrives at the muscle, it causes the motor unit's muscle fibers to contract. The more motor units that are activated, the more muscle fibers will contract, resulting in an increase in the tension generated by the muscle. This is known as the "all-or-none" principle, meaning that each motor unit will either contract fully or not at all.
Thus, by recruiting more motor units, the muscle will be able to produce greater tension. This process is used in strength training and endurance exercise to increase muscle size and strength.
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In a population of bees, the recessive trait is having no stripes. 16% of bees have no stripes. What are the following frequencies? Show all 5 steps here:S? s? SS? Ss? ss?
The first step in determining the genotype frequencies is to determine the allele frequencies. In this case, the allele for no stripes (s) has a frequency of 16%.
The next step is to use the allele frequencies to calculate the genotype frequencies using the Hardy-Weinberg equilibrium equation: p^2 + 2pq + q^2 = 1, where p and q are the allele frequencies and p^2, 2pq, and q^2 are the genotype frequencies.
Substituting the allele frequency of s = 16%:
p = 0.16, q = 0.84
Applying the formula:
p^2 = 0.16^2 = 0.0256
2pq = 20.160.84 = 0.2704
q^2 = 0.84^2 = 0.7056
The genotype frequencies are:
Ss = 0.2704 ( heterozygous)
ss = 0.0256 (homozygous recessive)
It is worth noting that SS is not present in the population as it's a dominant trait, and it's not possible to have homozygous dominant genotype in this scenario.
So, the final genotype frequencies are:
Ss = 0.2704
ss = 0.0256
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