A reflex arca begins at a receptor and ends at peripheral effectorb.is a voluntary response to a specific stimulusc.
One straightforward type of brain activity, out of the many possible types, results in a rapid response to a stimuli peripheral . Reflex action, then. A 19th-century English neurologist named Marshall Hall coined the term "reflex" (from the Latin reflexus, "reflection") because he believed that muscles reflect stimuli in a similar way to how a wall reflects a ball thrown against it. Hall used the term "reflex" to describe the automatic response of one or more muscles to a stimulus that activates an afferent neuron. The phrase is now used to refer to an action that is an innate, consciousness-free activity of the central nervous system in which a specific stimulus causes a muscle to react in a stereotyped, instantaneous manner.
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at _____ distances from the nucleus, the probability of a bremsstrahlung radiation _____ , and the energy of the bremsstrahlung ______ .
At a higher effective nuclear charge distances from the nucleus, the probability of a bremsstrahlung radiation is more, and the energy of the bremsstrahlung is 84 kVp.
A body or physical system need energy to perform work, produce heat, and release light. The quantity that makes things happen is called energy. It is a sum that the machinery will take. According to the law of conservation of energy, energy is a resource that can only be changed from one form to another and cannot be created or destroyed. In the SI (International System of Units), the unit of measurement for energy is the joule (J).
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If a cell has a nucleus and a cell membrane, but no cell wall, it is most likely
O a plant cell
O an animal cell
O a bacteria cell
• not a cell at all
Answer:
Explanation:
s
Answer:
a bacteria cell
Explanation:
Prokaryotes are single-celled organisms belonging to the domains Bacteria and Archaea. Prokaryotic cells are much smaller than eukaryotic cells, have no nucleus, and lack organelles. All prokaryotic cells are encased by a cell wall.
All of the following are examples of how tumors or the microenvironment in which they develop suppress immune responses except.a. induction of T- cell anergyb. peptide splicing of self-proteinsc. cleavage of MIC glycoproteins from tumor-cell surfacesd. TGF- beta-induced recruitment of regulatory T cellse. release of TGF-P and IL-10 by regulatory T cells
Examples of how tumors or the milieu in which they originate inhibit immune responses include peptide splicing of self proteins.
MHC molecules present tumor rejection antigens, which are peptides of tumor-cell proteins, to T lymphocytes. Because these peptides are not present on the surface of normal cells, at least not in quantities that allow T cells to recognize them, they can serve as targets for a tumor-specific T-cell response. There are six distinct groups of tumor rejection antigens. The antigens in the first group are only specific to tumors. These antigens are the product of gene rearrangements or point mutations, which frequently occur as a result of the oncogenesis process.
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What are Homologous Structures in Evolution?
Because they were passed down from a common ancestor, homologous structures are those found in related organisms that are comparable. These structures might or might not serve the same purpose in their offspring. The hands of various different mammals are depicted in the figure below. The basic skeletal structure of each is the same.
What is offsrping?
a person, animal, or plant's offspring or progeny is the result of reproduction. Parental transmission of the illness can affect children, a human or animal's direct offspring; a person born of parents gave birth to a lone child.
Creating offspring is considered reproduction. Reproduction comes in two basic forms: sexual reproduction and asexual reproduction. A sexually reproducing creature integrates the genetic material of both parents to create a genetically distinct individual. Asexual reproduction involves the self-replication of one parent to create genetically identical kids.
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there are special lymphatic vessels called that absorb fats and transport them from the digestive tract to the blood.
The lacteals, a special type of lymphatic capillary found in the digestive tract, facilitate the absorption of fat molecules.
It contains immune cells called lymphocytes, which clear bloodstream infections.
Learn how to explain the composition and purpose of the human lymphatic system in this explainer.
The lymphatic system is an organ system that is crucial to both the immune and circulatory systems. It is made up of a network of lymphatic vessels, which are in charge of removing the fluid that builds up between the body's cells, as well as lymphatic organs like the spleen and specialized structures called lymph nodes.
The tiniest blood veins are capillaries. A portion of the fluid leaks out of the capillaries as the capillary blood vessels reach the body's tissues during blood circulation. This fluid, known as interstitial fluid, diffuses into the tissue's crevices.
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what amino acids would be aligned from the following m-RNA strand?
A U G G C G G A A
Answer:
Methionine, Alanine, Glutamic acid
a variety of additives are used in blood collection tubes. which of the following additives prevents clotting by inhibiting thrombin and thromboplastin?
The following additives work to stop clotting by blocking thrombin and thromboplastin, such as lithium or sodium heparin.
What is the role of thromboplastin?Prothrombin is converted to thrombin during blood coagulation by the complex enzyme thromboplastin, which is present in blood platelets, the brain, the lung, and other organs.
What causes high thromboplastin time?An unusual (too long) PTT results could also be the consequence of: An issue with the brain's blood clotting process is seen in a number of illnesses known as bleeding disorders. Disorder of the liver that causes excessive activity of the blood clotting proteins (disseminated intravascular coagulation).
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A conservation biologist has been asked to explain why it is important to protect biodiversity. She would list all of the following reasons except for which one? O Biodiversity can be exploited indefinitely for the profit of humans. Other species have inherent value and humans have a moral obligation to protect them. Humans are dependent on many species for food, medicines, fiber, and other necessities. O Biodiverse ecosystems provide ecosystem services that sustain all life on Earth. A conservation biologist has been asked to explain why it is important to protect biodiversity. She would list all of the following reasons except for which one? O Biodiversity can be exploited indefinitely for the profit of humans. Other species have inherent value and humans have a moral obligation to protect them. Humans are dependent on many species for food, medicines, fiber, and other necessities. O Biodiverse ecosystems provide ecosystem services that sustain all life on Earth.
Biodiversity can be used endlessly for human profit. Biodiversity may be used indefinitely to human profit.
Who or what studies biology?Biology is a branch of natural science that examines living things. Due to the enormous variety of life on Earth, it is a highly broad discipline, hence individual biologists typically concentrate on particular topics. Either the spectrum of life or the sorts of species investigated are used to classify these areas.
Briefing:Numerous economic justifications have been put up in support of the appraisal of biodiversity's advantages. The majority of economists are anthropocentric, but others have questioned whether biodiversity has intrinsic value apart from what it can do for humans.
Because no one species can completely exploit every available niche, diversified ecosystems are often more productive than those that are not. A sufficient level of bio productivity must be maintained because the Earth's ecosystems are primarily responsible for human economic output.
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The complete question is-
A conservation biologist has been asked to explain why it is important to protect biodiversity. She would list all of the following reasons except for which one?
(a). Biodiversity can be exploited indefinitely for the profit of humans.
(b). Other species have inherent value and humans have a moral obligation to protect them.
(c). Humans are dependent on many species for food, medicines, fiber, and other necessities.
(d). Biodiverse ecosystems provide ecosystem services that sustain all life on Earth.
A conservation biologist has been asked to explain why it is important to protect biodiversity. She would list all of the following reasons except for which one?
(a). Biodiversity can be exploited indefinitely for the profit of humans.
(b). Other species have inherent value and humans have a moral obligation to protect them.
(c). Humans are dependent on many species for food, medicines, fiber, and other necessities.
(d). Biodiverse ecosystems provide ecosystem services that sustain all life on Earth.
Label the structures and lobes of the human brain by clicking and dragging the labels to the correct location.
The three main parts of the brain are the cerebellum, cerebrum, and brainstem. The cerebrum, which is the largest part of the brain, is made up of the left and right hemispheres. It performs higher order cognitive functions including speaking, feeling, thinking, and learning.
Anatomically, the precentral gyrus houses the primary motor cortex, which controls free will movement. The temporal lobe, which is found behind the ears, is the second-largest lobe. The internal occipital lobe is separated from the parietal and internal temporal lobes by the parieto-occipital sulcus, a very deep sulcus that runs through the posterior region of the hemisphere.
The insula plays a crucial role in the processing of gustatory and sensorimotor information, risk-reward behavior, autonomic nervous system function, pain pathways, and auditory and vestibular functions.
The main somatosensory cortex, a prominent brain area in charge of proprioception, is located in the postcentral gyrus. On the lateral and medial surfaces of the cerebral hemispheres, the central sulcus serves as the dividing line between the frontal and parietal lobes.
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what is oxygen cycle ? explain ? and give advantages as well as disadvantages?
Explanation:
Oxygen cycle refers to the movement of oxygen through the atmosphere (air), biosphere (plants and animals) and the lithosphere (the Earth's crust). The oxygen cycle demonstrates how free oxygen is made available in each of these regions, as well as how it is used.
Advantages:
Oxygen cycle, along with the carbon cycle and nitrogen cycle plays an essential role in the existence of life on the earth. The oxygen cycle is a biological process which helps in maintaining the oxygen level by moving through three main spheres of the earth which are: Atmosphere. Lithosphere.
Disadvantages:
High concentrations of oxygen, over a long period of time, can increase free radical formation, leading to damaged membranes, proteins, and cell structures in the lungs. It can cause a spectrum of lung injuries ranging from mild tracheobronchitis to diffuse alveolar damage.
Explanation
Oxygen cycle refers to the movement of oxygen through the atmosphere (air), biosphere (plants and animals) and the lithosphere (the Earth's crust). The oxygen cycle demonstrates how free oxygen is made available in each of these regions, as well as how it is used.
Advantages:
This cycle is important because it helps to shield the Earth from the majority of harmful ultra violet radiation turning it to harmless heat before it reaches the Earth's surface.
Disadvantages:
High concentrations of oxygen, over a long period of time, can increase free radical formation, leading to damaged membranes, proteins, and cell structures in the lungs. It can cause a spectrum of lung injuries ranging from mild tracheobronchitis to diffuse alveolar damage.
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which of the following statements is true? the leading strand is replicated continuously for the entire length of the chromosome, e.g. while the lagging strand has multiple origins of replication.
none of the answers are true. while the lagging strand has multiple origins of replication.
In contrast to the lagging strand, which is read in the replication fork's direction, the leading strand is read in the replication fork's direction in the range of 3' to 5'.Is the leading strand continually replicated?
A lagging strand duplicates intermittently, creating brief pieces, whereas a leading strand repeats continuously. This is the main distinction between the two types of strands.One new strand (the leading strand) is created during DNA replication in one continuous piece. Small fragments make up the other (lagging strand). DNA primase, DNA helicase, DNA ligase, and topoisomerase are additional enzymes necessary for DNA replication in addition to DNA polymerase.
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What are the next steps for someone who tests positive for an STI?; How do you take care of a STI?; What happens after STI testing?; What are 4 steps you can take to minimize your risk of contracting an STD?
The next step for someone who tests positive for a STI is to listen to your doctor. Antibiotics are used to treat a STI. You will be asked to return to the clinic to discuss your results and the necessary treatment if you test positive for a STI.
It's possible that minor symptoms are all an STD would ever produce. Take all of the medications that your healthcare professional (HCP) prescribes for you, even if you never experienced symptoms or start to feel better before the course of therapy is complete.
Infections known as sexually transmitted infections (STIs) are transferred through sexual contact. STIs are very prevalent and spread quickly. While some STIs are treatable and curable, others cannot. You may take action to protect your health by being informed. You will be asked to return to the clinic to discuss your results and the necessary treatment if you test positive for a STI. Antibiotics are effective in treating several STIs. Although there is no known cure for some viruses, including HIV, there are therapies available.
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These are twitch graphs for 3 different single muscle fibers. According to this image, what fiber type has more myofibrils/fiber? Fast fatigue-resistant Fast fatigable Slow
This picture shows Fast fatigable More myofibrils/fiber are present in slow types.
What is myofibril and its function?Sarcomeres, the muscle's functional units, make up myofibrils. The sliding-filament concept is used by the myofibril to produce muscle contraction. While muscle are all at rest, the thick and thin filaments do not completely overlap, with certain regions having neither of the two main types.
What are myofibril and myofilaments?Actin, myosin, and titin are among the lengthy proteins found in myofibrils. Myofilaments. Myofibrils are held together by lengthy proteins that are organized into thin and thick filaments. They are referred to as myofilaments. These occur in segments known called sarcomeres and recur all along length of the myofibrils.
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True or False: the minus end of microtubules and microfilaments is so named because subunits are lost and never added there.
The minus end of microtubules and microfilaments is so named because subunits are lost and never added there.This is the False statement.
Microtubules are structurally a helical lattice, while microfilaments are a double helix. Microtubules are thick cylinders made of repeating protein structures, mainly dimers of alpha and beta tubulin (also called ɑ-tubulin and β-tubulin). Microtubules are 24 nm in diameter term microfilaments are 7 nm in diameter. Microfilaments are stiff rods made of a protein called actin. When it is first produced by a cell, actin appears in a globular shape. Microfilaments are polymers of actin, which is the most abundant protein in most animal cells.
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a scientist determined the rate of an enzyme-catalyzed reaction by measuring the amount of product formed over time. the following curve was generated from the data collected.
The shift in the slope of the line between 4 and 6 minutes was most likely caused by a significant amount of substrate being digested. Additionally, the rates are the same at both 1 and 2 minutes.
In biochemistry, the molecule that an enzyme reacts with is referred to as the substrate. Enzymes facilitate chemical reactions involving the substrate (s). The creation of an enzyme-substrate complex occurs when a single substrate forms a bond with the active site of the enzyme. A substrate is a surface on which an organism (such as a plant, fungus, or animal) exists. A substrate might be composed of living things, inorganic or organic elements, or both. For example, an animal that lives on top of algae that has formed a crust on a rock may use the algae as its own substrate. In biochemistry, substances that the enzymes react with are referred to as substrates. In ecology, the term "substance" refers to the base to which an immobile material is attached.
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which of hte following bets describes how chromosomes move toward the poles of the spindle during mitosis? Motor proteins of the kinetochores move the chromosomes along the spindle microtubules
The event which best describes the movement of chromosomes towards spindle during mitosis is by contraction of spindle microtubules and movement of motor proteins of the kinetochores, which suggests that option B is the right answer.
Chromosomes are the thread like structures made up of proteins and are found inside the nucleus of the cell. It carries the units of heredity that is genes on itself. During anaphase, the chromatids move towards the opposite poles and centromeres are pulled by microtubules. Chromosomes break at centromere. Chromosomes align at the metaphase plate at right angles to the spindle poles. At the end of anaphase, each pole contains a complete compilation of chromosomes.
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To refer to complete question, see below:
Which of the following best describes how chromosomes move toward the poles of the spindle during mitosis?
a. The chromosomes are "reeled in" by the contraction of spindle microtubules.
b. The chromosomes are "reeled in" by the contraction of spindle microtubules, and motor proteins of the kinetochores move the chromosomes along the spindle microtubules.
c. The chromosomes are "reeled in" by the contraction of spindle microtubules, motor proteins of the kinetochores move the chromosomes along the spindle microtubules, and non kinetochore spindle fibers serve to push chromosomes in the direction of the poles.
d. Nonkinetochore spindle fibers serve to push chromosomes in the direction of the poles.
e. Motor proteins of the kinetochores move the chromosomes along the spindle microtubules.
the___rule describes the tendency for babies to gain control of their body from their head to their feet.
The cephalocaudal rule describes the tendency of infants to be able to control their body from head to toe.
A baby will start working on lifting his head from the first day, and can start lifting his head as soon as he is one month old. In about 3 to 4 months, you will see a significant improvement in your child's head control. By six months, your baby will have mastered the art of holding his head. It begins to develop during the year, and at six months, many babies can hold their head in different positions. Head control and vision work together for purposeful movement. Head control, along with other physical changes, is a sign that babies are ready for solid food.Cephalocaudal development explains the head-to-toe trend of growth and maturation of humans as their nervous system develops,
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Which of the following Proteobacteria regularly use(s) intracellular pathogenesis as part of the infection cycle?
Choose one or more:
A. Neisseria meningitidis
B. Legionella pneumophila
C. Yersinia pestis
D. Escherichia coli
Legionella pneumophila, Most cases of Legionnaires' illness are caused by the bacteria Legionella pneumophila.
Any of the subsequent typhus and Rocky Mountain spotted fever caused by alphaproteobacteria?
Numerous crucial bacteria for medicine can be found in the order Rickettsiales of the -proteobacteria, including the pathogens that cause typhus and Rocky Mountain, spotted fever. Newly emerging pathogens that cause diseases that are similar to one another and have numerous bacterial traits are among them.
What are the functions of alpha protozoa?Alphaproteobacteria of the genus Agrobacterium are frequently used by scientists to introduce foreign DNA into plant genomes due to their symbiotic characteristics. They also offer numerous additional biotechnological advantages.
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a common mechanism for antibiotic resistance is alteration of the molecule targeted by the antibiotic. very small changes in the structure to extensive alterations may produce a gene product on which the antibiotic has limited effect. match the type of point mutation with the type of damage it is most likely to produce.
Very small changes in the structure to extensive alterations may produce a gene product on which the antibiotic has limited effect which is called Missence.
What does "missense mutation" mean exactly?
A missense mutation is a DNA error that causes the integration of an unfavourable amino acid into a protein as a result of altering a single nucleotide in the DNA. The pallor associated with sickle cell anaemia is the best illustration of a missense change.
What does missense result?
A missense variant is a sort of substitution in which a nucleotide change causes the protein produced from the gene to have a different amino acid in place of one amino acid. The protein's functionality could be affected by the amino acid alteration.
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Native autotroph species Of grassland (at least three)
Native heterotroph species of grassland (at least three)
Invasive species (at least one) of grassland
Endangered species (at least one) of grassland Briefly explain why this species is endangered.
One of the most vulnerable mammals in North America is the black-footed ferret.
Explain about the Endangered species of grassland?There are five species, and because of habitation by humans in their natural habitats, all five have experienced a reduction. However, only Cynomys mexicanus, the Mexican prairie dog, is currently listed as an endangered species by the U.S. Fish and Wildlife Service. There has been a little increase in the population of Cynomys parvidens, which was once thought to be endangered.
The Grasslands Specialist Group of the International Union for the Conservation of Nature (IUCN), the world authority on the condition of wild animal and wild place conservation, classifies them as one of the most endangered ecosystems on Earth.
A few factors that endanger natural grasslands and the wildlife that inhabits them are farming, overgrazing, invasive species, illegal hunting, and climate change.
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your friend claims that a nonsense mutation causes proteins to be shorter because the mutation stops rna polymerase. is your friend's claim true or false? to start, address the first part of the claim: nonsense mutations cause proteins to be shorter. which of the following is an accurate, relevant statement about transcription or translation that could be used to determine if the claim about protein length is true?
My friend's claim is false, because while the nonsense mutation does lead to a shorter protein, this is because the stop codon stops DNA polymerase, not RNA.
Two polynucleotide chains form the double helix structure of deoxyribonucleic acid, a polymer (DNA). Every known organism, including many viruses, has genetic material. An organism's growth, development, function, and reproduction all depend on its genetic makeup. DNA and ribonucleic acid are examples of nucleic acids (RNA). Along with proteins, lipids, and complex carbohydrates, nucleic acids are one of the four primary types of macromolecules required for all known forms of life (polysaccharides).
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Q1. Celery is a plant that is harvested for food.
The celery stem is made from xylem tissue. phloem tissue and epidermal
tissue.
Is the celery stem an organ or an organism?
Choose the best answer to this question.
A. An organism because plants are living things
B. An organism because it is made of several different organs
C. An organ because it is made of several different tissues
D. An organ because it is made of the same type of cells
The celery stem is an organ because it is made of several different tissues (Option C).
What is a biological organ in an organism?A biological organ in an organism is a group of tissues that work together in order to play a given function such as occurs with the roots in plants that are composed of different tissues including vascular tissues (phloem and xylem) that are required to transport nutrients across the plant.
Therefore, with this data, we can see that an organ is a group of tissues specialized to play a particular function.
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how does iodine affect a solution of starch and amylase and a solution of starch and water?
Amylase breaks down starch into glucose, and glucose does not react with iodine. Iodine in the solution of starch and water will turn a brown, blue-black or purple color.
Iodine reaction with Starch and water solutionWhen the starch granules are added to water, it rises and burst. This causes the starch molecules to break down and release the glucose molecules into the water. The starch molecules interact with more water, increasing the randomness of the solution. This process is known as gelatinization.
To test for the presence of starch in the solution iodine is added to the mixture. The coloration of brown to blue-black or purple color confirms the presence of starch.
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Dams provide water for 40% of irrigated land, yet there are disadvantages to dams. Which of the following is NOT a disadvantage of dam use?
a) loss of water due to evaporation
b) provide electricity for many countries
c) increase in salinity due to evaporation and runoff
d) increase in sediment buildup leads to less available water
e) depletion of river water
b) provide electricity for many countries
The statement which is not disadvantage for dams b) provide electricity for many countries
Dam is a building that is used as a barrier to the flow of river water so as to form a reservoir with water reserves. Dams are used to raise the water level in rivers to the height required for water to flow into irrigation canals and rice fields.
The flow of water in the dam can also be used as an alternative source of hydroelectric power that is capable of producing large amounts of electricity. By using a water wheel, the rotation of the water wheel in the dam will produce strong energy of motion. The motion energy from the water wheel can be utilized to generate electrical energy.
Apart from providing many benefits, the dams they build can have negative impacts such as damaging the ecosystem. salinity will rise due to evaporation that occurs in the water in the dam, as well as the amount of water will decrease due to the extinction of sediment causing reduced air availability. The volume of river water will also decrease because the water is trapped in the dam. The process of evaporation of water in the dam due the sun's heat energy can heat up the water in the dam and cause the water molecules to move faster and turn into a gas called water vapor. water vapor and rises into the atmosphere. Evaporation of dam water causes the amount of water in the dam to decrease, thus causing the water salinity to increase.
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What part of a gene carries?; What are the genes for a trait called?; Who carry the genes?; What instructions do genes carry?
Chromosomes are little, spaghetti-like objects that contain genes. Moreover, chromosomes are located inside of cells. The data that defines your trait is encoded in your genes.
Your traits, which are trait or characteristics that you inherit from your parents, are determined by the instructions carried by your genes . Each cell in the human body has somewhere from 30,000+ genes. Your genes include the instructions that tell your cells how to make the proteins that make up your body. Proteins are used by your body for a number of processes that keep you healthy. Each gene provides instructions that control your traits, including your height, eye color, and hair color. For each trait , there are several gene variations.
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- made continuously
- daughter strand elongates toward replication fork
- only one primer needed
- synthesized 5' to 3'
what is true about the leading strand?
all the facts are true about leading strand that it is made continuously, - daughter strand elongates toward replication fork, only one primer needed and synthesized 5' to 3'
The straightforward new strand is the one that goes from 5' to 3' toward the replication fork. Because the DNA polymerase and the replication fork are travelling in the same direction, this strand is produced continually. The leading strand is the one that is constantly being created. In contrast to the lagging strand, which requires a fresh primer for each of the brief Okazaki fragments, the leading strand can be extended from a single primer.
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1. a gametophyte generation that is dominant 2. lignified vascular tissues 3. filamentous rhizoids, but not true roots 4. spores that are diploid when mature
Although the multicellular male and female gametophytes are generated within the sporophyte's blooms, the sporophyte is the dominant generation.
Are there any blood vessels in fern gametophytes?The gametophytes have no vascular tissue at all, in contrast to the vascular sporophytes. As a result, these gametophytes are very tiny and grow best in damp environments where they can directly absorb water from their surroundings. Ferns and their associates are still limited to damp environments, just like the bryophytes.
Which one, sporophyte or gametophyte, is dominant?The size of the sporophyte stage has gradually grown during evolution. Thus, the sporophyte phase of the life cycle in higher (i.e., vascular) plants, whereas the gametophyte phase predominates in more primitive nonvascular plants (bryophytes).
Question: Upon closer inspection of the leaves of flower of stone, one can observe tiny, cone-like structures. each cone-like structure emits spores of two different sizes. consequently, flower of stone should be expected to possess which other characteristics? 1. a gametophyte generation that is dominant 2. lignified vascular tissues 3. filamentous rhizoids, but not true roots 4. spores that are diploid when mature
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Which scenarios describe a keystone species?
A. Removal of a species of herbivore results in a slight decline in the biomass of the other species in that community.
B. Humans hunt a rare species of predator to extinction. Within several years, the diversity of species living within that ecosystem collapses and only a handful of species remain.
C. On one side of a river, a species of herbivore is found in small numbers. On the other side, it is absent. The side it is found on has 5 times the species diversity compared to the other side.
D. A tree is found to be the most abundant species in a community. Its removal substantially reduces the biomass but not the number of species in the community.
The scenarios that describe a keystone species are Option B and C.
B. Humans hunt a rare species of predator to extinction. Within several years, the diversity of species living within that ecosystem collapses and only a handful of species remain.C. On one side of a river, a species of herbivore is found in small numbers.What is the keystone species?A species that plays a vital role in defining an ecosystem is known as a keystone species. By controlling the number of mussels and barnacles
Huge ecosystems depend on keystone species like large mammalian carnivores. They eat a wide range of animals and aid in keeping the ecosystem in balance by doing so. Lions, tigers, and jaguars are a few examples of huge animal predators.
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the structures that cover wrap around and completely envelope capillaries in the brain are the feet of astrocytes. true or false?
True is the right response. In the brain, capillaries are surrounded by the perivascular feet of astrocytes.
What are capillaries?
Your body contains tiny blood vessels called capillaries, which are found everywhere. They deliver blood, nutrients, and oxygen to the cells that make up your body's organs and systems. Your vascular system contains capillaries, which are the smallest blood vessels.
Capillaries complete the circulatory system by connecting arteries to veins: Arteries carry oxygen-rich blood from the heart to your organs. Veins help the body remove low-oxygen blood and waste.
Capillaries also support a variety of organs and systems. They support the:
Bone marrow, by enabling new blood cells to enter your bloodstream.
Brain, by forming the blood-brain barrier. This structure delivers nutrients to the brain while preventing toxins from passing through.
Endocrine system, by delivering hormones to specific organs.
Kidneys, where peritubular capillaries filter blood, produce urine, and absorb water and sodium.
Liver, by removing defective red blood cells and bacteria.
Lungs, by releasing carbon dioxide take in oxygen.
Lymphatic system, by collecting fluid from tissues and directing it to lymph nodes.
Small intestine, transport digested nutrients so they can nourish your cells.
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when you added primary antibody to the wells, what happened if your sample did not contain the antigen
when you added primary antibody to the wells, If the antigen was not detected, the main antibody was washed off.
Antibodies and proteins shield you from harmful chemicals when they come into touch with your body. Antibodies are created by your immune system to bind to these foreign chemicals and remove them from your body. Immunoglobulin is another term for an antibody. A foreign substance that enters your body is referred to as an antigen. This includes venom, allergens, bacteria, viruses, fungus, and other poisons. Your immune system makes an antibody protein that it employs to find and eliminate particular antigen. Surface molecules on antigens are different from ones your body typically produces. Your immune system thus recognizes an antigen as soon as it enters your body. Your immune system requests antibody defense in order to fight against this antigen invasion. The B cell produces antibodies (specialized white blood cells). A B cell expands and clones when it comes into touch with an antigen. These plasma cells, also known as cloned B cells, continuously produce antibodies into your lymphatic and blood systems.
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