for the following questions, match the labeled component of the cell membrane in the figure with its description. which component is a microfilament (actin filament) of the cytoskeleton?
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The microfilament (actin filament) of the cytoskeleton is the labeled component in the cell membrane figure.
In the given question, the specific labeled component being asked about is the microfilament, which is also known as an actin filament. Actin filaments are a type of cytoskeletal element found in cells.
They are composed of actin proteins and play a crucial role in maintaining cell shape, providing mechanical support, and facilitating cell movement.
Actin filaments are thin and flexible structures that form a network throughout the cytoplasm of cells. They are involved in various cellular processes, such as cell migration, cell division, and the formation of cellular extensions like filopodia and lamellipodia.
In the context of the cell membrane figure, the labeled component representing a microfilament (actin filament) would likely be depicted as a thin, filamentous structure within the cell.
This component is distinct from other components of the cell membrane, such as transmembrane proteins, phospholipids, or other cytoskeletal elements like microtubules.
Therefore, the microfilament (actin filament) of the cytoskeleton is the specific labeled component in the cell membrane figure being referred to in the question.
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Determine whether the following statement is true or false, and why: "Populations are dynamic, responding to variations in their environment."
A. False, it should read "Populations are static, responding to variations in their environment."
B. False, it should read "Populations are dynamic, they do not respond to variations in their environment."
C. False, it should read "Populations are static, they do not respond to variations in their environment."
D. True
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The is true that populations are dynamic and respond to variations in their environment (option D).
What is a population?A population is the collection of organisms of a particular species, sharing a particular characteristic of interest and living in a given area.
However, populations of organisms are dynamic in nature, meaning that they can change over time in response to environmental conditions.
Therefore, it is true that populations are dynamic and respond to variations in their environment.
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When a molecule regulates the activity of an enzyme by binding to a site outside of the active site, it is known as a/an
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By allosteric regulation an enzyme might be activated or inhibited. When a molecule regulates the activity of an enzyme by binding to a site outside of the active site, it is known as an allosteric molecule.
What is an allosteric molecule?Allosteric regulation occurs when molecules bind to the enzyme on another side, which is not the binding site. This is the allosteric site, and molecules binding to these sites are the allosteric molecules.
Allosteric molecules can be either,
Allosteric inhibitors → inhibit the enzyme activity by not letting the substrate get attached to the enzyme.Allosteric inhibition is non-competitive inhibition because the allosteric molecule does not compete directly with the substrate.
It attaches to the enzyme at another site, impeding the substrate to bind the enzyme and turning off its function.
Allosteric activators → change the active site and make it more efficient to bind the substrate.Allosteric activation is a cooperative process in which the enzyme function is enhanced. Some substrates can even work as allosteric activators for other active binding sites.
Allosteric enzymes can change their conformation, exhibiting active and inactive conformations as a result of substrate binding at the activated center and regulatory molecules at other binding sites -allosteric centers-.
According to this framework, When a molecule regulates the activity of an enzyme by binding to a site outside of the active site, it is known as an allosteric molecule.
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A ""hot spot"" appears darker than other areas on a bone scan and indicates an area of _________ metabolism.
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A ""hot spot"" appears darker than other areas on a bone scan and indicates an area of increased metabolism.
Nuclear imaging is used during a bone scan to assist identify and monitor various bone diseases. In order to observe internal structures like bones, such as the bones in the body, nuclear imaging uses small amounts of radioactive chemicals (radiotracers), a particular camera that can detect the radioactivity, and a computer. These could be metabolic or other chemical activity levels. Hot spots are regions with higher intensity. These might exhibit high levels of radiotracer concentrations as well as intense chemical or metabolic activity.
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Plssss help answer must be two lines
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Answer:
Explanation:
When the chemical 'x' was added to the plant at the time of 5.0, the Chemical (mineral) intake took at a fast pace of .5 sec (as shown in graph).
The Mineral is transported to the whole plant body via Xylem.
a,u
The chemical started to react the plant at 7.5 mins
The mineral-based pigment called ____, was used by early modern homo sapiens to color many artifacts and features.
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The mineral-based pigment called Ochre was used by early modern Homo sapiens to color many artifacts and features.
It was used by early modern homo sapiens to color many artifacts and features. This is the most common use by modern humans, especially archaeologists, as any iron rich rock that can be used as a pigment.
The two effects of dividing food-gathering labor, the camp and the dependence of the gender on each other beyond reproduction, were the first great steps toward modern human culture. Sharing of resources and its concomitant division of labor led to a divergence in both the biological and cultural evolution.
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What two environmental factors influence the shape of a proteins?
What is the term called when the shape of a protein is changed?
What impact does this change in shape have on the proteins ability to function or job?
Make sure to use complete sentences, and write a sentence to answer each question.
Answers
The shape of proteins are affected by temperature and pH.
The change of shape of proteins is known as denaturation.
Denaturation of a protein will make it unable to function.
What factors affect protein functions?Proteins are large molecules which are found in living organisms.
The shape of proteins are affected by temperature and pH of their environment.
The change of shape of proteins is known as denaturation.
Denaturation of a protein will make it unable to function since protein function depends on its shape.
In conclusion, protein denaturation affects its function.
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What happens during prophase of meiosis l?
a) spindle fibers reform and attach to the haploid chromosomes
b) cytokinesis begins, the cells pinch off, forming two cells
c) the spindle fibers are made by centrosomes and are attached to the centromeres of the chromosomes
d) the duplicated homologous chromosomes pair up and exchange their chromatid segments
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During prophase of meiosis l happens the duplicated homologous chromosomes pair up and exchange their chromatid segments.
What is meiosis I stage?
Meiosis I begins with prophase I, a phase marked by the progressive condensation of chromosomes, exchange of genetic material between non-sister chromatids, formation of the spindle (bundle of microtubules), breakdown of the nuclear envelope and the beginning of the migration of homologous chromosomes towards to the metaphase plate.
In this case, is correct to say that the duplicated homologous chromosomes pair up and exchange their chromatid segments occurs in meiosis I.
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how do adoptions affect a species
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Adaptations are passable traits that improve an organism's capacity to endure and procreate in a given environment. An organism can manage in harsh settings, locate food and water, and protect itself by adapting.
What is adaptation?Three definitions of adaptability are connected. First, natural selection, a dynamic evolutionary process, adapts organisms to their environments, improving their evolutionary fitness. Second, it is a state that the populace has attained throughout that process.Any heritable characteristic that enables a plant or animal to survive and procreate in its environment is referred to as an adaptation.A method by which a species or organism adapts to its surroundings better. Science calls the shift evolution when a group of organisms does this throughout time. Behavior is the manner in which something often a person or other organism conducts itself or acts toward others.Having particular traits or behaviors that allow an animal or plant to survive in its environment is referred to as adaptation.Learn more about adaption here:
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Amy and Rosalie are discussing the circulatory system. Amy says the circulatory system moves red and white blood cells through the body. Rosalie says the circulatory system moves carbon dioxide and nutrients through the body. Who is correct
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Both the Amy and Rosalie are correct.
What is Circulatory system?
The heart, blood vessels, and blood itself circulate throughout the entire body of a human or other vertebrate through the blood circulatory system.
The blood contains of the red and white blood cells along with plasma and other substitutes of blood.
Also the blood has the function to supply the nutrients to the cells of the body along with transporting carbon dioxide to the alveoli of the lungs.
The circulatory system is a closed pack system with the involvement of various organs like the heart the lungs and plays a crucial role in maintaining the homeostasis of the body.
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Bacteria can make their own folic acid, which is required for nucleic acid synthesis, but humans cannot and instead have to ingest folic acid. Trimethoprim is an antimicrobial drug that inhibits one of the enzymes involved in making folic acid. This drug inhibits the growth of bacterial cells but not human cells. This is an example of
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This drug inhibits the growth of bacterial cells but not human cells. This is an example of the selective toxicity of antibiotics.
Folic acid is an essential component for all cells to synthesize nucleic acids (DNA and RNA). Human cells do not synthesize folic acid and they take it through food. Bacterial cells are impermeable to folic acid and hence they need to synthesize their own folic acid.
Antibiotics target the metabolic pathway of folic acid synthesis in bacteria by inhibiting one of the enzymes in this pathway. These drugs are only toxic to bacteria but not to humans because humans do not have the folic acid synthesis pathway and hence they do not get affected by the action of the antibiotic. This is known as the selective toxicity of antibiotics.
These antibiotics are designed in a way to target the infecting agent (bacteria) while rendering minimal or no toxicity to the host (humans).
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A function ________ eliminates the need to place the function definition before all calls to the function.
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A function prototype eliminates the need to place the function definition before all calls to the function.
The variable that are defined inside the function but not out side the function are local variable and global variable . A static variable that is defined within a function is initialized only once, the first time the function is called. A function prototype is a definition that is used to perform type checking on function calls when the EGL system code does not have access to the function itself. We prototype the function to tell the compiler about the number of arguments and about the required datatypes of a function parameter, it also tells about the return type of the function.
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Which is a common characteristic of both nuclear and conventional electric power plants?
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A nuclear and a convention electric power plant has steam turbines.
What are the characteristics of nuclear and conventional electric power plants?Electricity generation is the main objective of conventional coal-fired power plants and nuclear power plants.
In both kinds of power plants, the turbines are typically used to transform thermal energy into electrical power and are both driven by steam. The source of heat used to generate steam is the only fundamental distinction between a nuclear power plant and a normal coal-fired power plant.
The energy generated during combustion, which breaks chemical bonds, is the source of heat in a conventional power plant.
The nuclear fission process, which involves the breaking of nuclear bonds, is the source of heat in nuclear power plants.
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How many atp molecules are produced in the transition period during cellular respiration
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32 ATP molecules are produced in the transition period during cellular respiration.
Cellular respiration is a series of metabolic reactions and processes that occur within the cells of an organism, converting chemical energy from nutrients to adenosine triphosphate and releasing waste products.
Cell respiration is a series of metabolic reactions and processes that occur within the cells of an organism to convert chemical energy from nutrients to adenosine triphosphate (ATP) and release waste products.
Cell respiration is the process by which organisms use oxygen to break down food molecules to produce chemical energy for cell function. Cellular respiration occurs not only in animal, plant, and fungal cells but also in algae and other protists.
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What is the prominent red blood cell (rbc) morphologic feature found in lead poisoning (plumbism)?
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The basophilic stippling is a prominent red blood cell, morphologic feature found in lead poisoning (plumbism).
The basophilic stippling is a frequent manifestation of hematologic disease in the peripheral blood, and it is also observable in bone marrow aspirates.
The lead poisoning inhibits the ability to produce hemoglobin by interfering with enzymatic steps in the heme synthesis pathway and reduce red blood cells, which results in the increasing risk of anemia.
The interference of lead in the development of RBCs results as the exposure to a very small amount of lead greatly changes the surface of the red blood cells. The permeability of water gets altered which results in shrinking and so they aren't capable of swelling up like other normal cells.
The hematologic system is involved with lead poisoning where one can find anemia as a result of it.
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100. points: out of these choices, what memories are declarative memories, and what are the hardest memories to remember if one has lost its hippocampus?
Answer choices:
Deciding on his favorite ice cream
Recalling a synonym for the opposite of the word "good"
Riding a bicycle
Conveying the nature of his condition
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The hardest memories to remember if someone has lost their hippocampus is remembering a synonym for the opposite of the word "good"
Remembering a synonym for the opposite of the word "good"What is the hippocampus?The hippocampus is involved in the formation of new memories and is also associated with learning and emotions. The hippocampus plays a critical role in forming, organizing and storing new memories, as well as connecting certain sensations and emotions to those memories.
With this information, we can conclude that The hippocampus is a part of the brain that is involved in emotions, learning, and memory formation.
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Which of the following examples can cause gene flow between populations?
A) an increase in predators to a population of zebra
B) a volcanic eruption that kills half of a population of mice
C) bird droppings that contain seeds from a different location
D) a person that sprays a toxin on a group of mosquitoes
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Answer: c. Bird droppings that contain seeds from a different location
Gene flow is the process by which certain alleles (genes) move from one population to another geographically separated population.
Reduced microglial immunoreactivity for endogenous NMDA receptor agonist quinolinic acid in the hippocampus of schizophrenia patients
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Postmortem and positron emission tomography have shown that microglial cells play a pathophysiological role in schizophrenia.
Reduced microglial immunoreactivity for endogenous NMDA receptor?We postulated that the previously mentioned glutamatergic impairments in the hippocampus of schizophrenia patients may be related to the microglial synthesis of quinolinic acid (QUIN), an endogenous N-methyl-d-aspartate receptor (NMDAR) agonist. Reduced microglial immunoreactivity for endogenous NMDA receptor agonist quinolinic acid in the hippocampus of schizophrenia patients. We measured the number of QUIN-immunoreactivity microglial cells in the CA1, CA2/3, and dentate gyrus (DG) regions of the posterior hippocampus formation in schizophrenia patients and matched controls. HLA-DR, a popular microglial surface marker, was further immunostained in nearby histological sections. In the CA1 hippocampus sub region of schizophrenia patients compared to controls, fewer QUIN-immunoreactivity microglial cells were seen (left p=0.028, right p=0.018). In the CA2/3 and DG areas, no notable diagnosis-dependent alterations were seen. Potential confounding factors such as age, disease duration, autolysis time, psychotropic medication, and hippocampus volume were taken into account while analyzing these results. There were no variations in the overall density of microglial cells linked to diagnosis (HLA-DR expression). Our results imply that schizophrenia is related with decreased microglial QIUN content in the hippocampus CA1 region. We surmise that this connection could be a factor in schizophrenia patients' hippocampus' decreased glutamatergic neurotransmission.
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What intensity (percent of 1RM) is most closely associated with the training adaptation of muscle hypertrophy? Less than 67 percent of 1RM 67 to 85 percent of 1RM Greater than 85 percent of 1RM 75 to 85 percent of 1RM
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The intensity which is most closely associated with the training adaptation of muscle hypertrophy is 67 to 85 percent of 1RM and is denoted as option B.
What is Hypertrophy?This type of muscle growth is observed in the enlargement of its overall size and volume as a result of various forms of stimuli such as external force from different types of load etc.
When performing exercises, load is carried by the muscles which increases its tendency to expand due to the stimulation of more structural proteins to the area as a result of it being stretched. This is however optimal when the individual attains about 67 to 85 percent of one-rep max when performing physical activities.
This is therefore the reason why option B was chosen as the most appropriate choice.
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Is the following statement true or false? the most frequent sign and symptom of a developing pulmonary embolus is tachypnea and dyspnea
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The statement is True.
Dyspnea has a multi-factorial origin, resulting from bronchospasm or vasospasm, disturbances in pulmonary circulation, immobility or diminished respiratory excursion of the diaphragm, atelectasia and/or pulmonary infarction, anoxia, or impairment of cardiac function.
Dyspnea, chest pain, and cough are the most frequent symptoms of Pulmonary Embolism(PE), while fever, tachycardia, abnormal pulmonary signs, and peripheral vascular collapse are the most common physical findings.
Pulmonary embolism (PE) occurs when a blood clot gets stuck in an artery in the lung, blocking blood flow to part of the lung. Blood clots most often start in the legs and travel up through the right side of the heart and into the lungs. This is called deep vein thrombosis (DVT).
Clot in the lung circulation (pulmonary embolus): Breathlessness is usually sudden and associated with rapid breathing and may be accompanied by chest pain.
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Which three statements provide reasons that scientists are considering renewable sources of energy?
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These are the three explanations that give reasons that scientists are considering renewable source of energy:
1. Renewable sources are assets implies they are old and reliable sources.
2. Most renewable sources are effectively accessible in nature.
3. Renewable resources are cost-effective in contrast with non-renewable resources.
A renewable energy source implies energy that is feasible, that can't run out, or is unending, similar to the sun. It is additionally named 'alternative energy'. These assets are fit for recovery. The recovery of these sources includes a few biological cycles on a time scale. Sun, water, air, and heat from the earth are sustainable sources that we can use to make solar-based, tidal, wind, and geothermal energy. Renewable energy is additionally called green or eco energy.
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A new animal is discovered that is more sensitive to pain in its toes than its fingers. If we were to examine the brain of this animal we would notice that ________.
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A new animal is discovered that is more sensitive to pain in its toes than its fingers. If we were to examine the brain of this animal we would notice that the parietal lobe would have more brain area devoted to the toes than the fingers.
What is the parietal lobe's primary purpose?The parietal lobe is one of the major lobes in the brain, roughly located at the upper back area of the skull.It is found on both the left and right hemispheres of the cerebral cortex.
Somatosensory information from the body, such as touch, pain, temperature, and the perception of limb position, is processed by the parietal lobes. The parietal lobes play a role in integrating data from several modalities, just like the temporal lobes do. Parietal lobe houses the primary somatic sensory cortex, a part of the brain that processes information from various parts of the body.
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Under normal conditions, the adult bone marrow produces approximately 70 billion neutrophils. what is the major function of neutrophils?
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Neutrophils is sign of body infection.If you have high neutrophils which is present in human blood then its is known as Neutophilia.
Its a type of white blood cells (WBC) its an important part of immune system which helps body to fights with infection. When micro organisms such as bacteria or viruses are enter in human body then these neutrophils are the first immune cells to respond.
Under normal conditions, the number of neutrophils in healthy person is between 2,500 to 6,000 .If neutrophils are increases of deceases in human body then doctor suggested antibodies.It may eventually go away, or remain as a life - long condition.
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Explain the sequence of events that occur in secondary succession as you would to a friend who had not yet learned about the process
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The sequence of events that occur in secondary succession include:
Pioneer speciesIntermediate speciesClimax community.What is Secondary succession?This usually occurs when the primary succession has been disrupted through factors such as wildfire etc.
In this scenario, the existing vegetation is present which gives rise to the species listed above.
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If you suspect corrupted system files are causing issues, what command can be run to verify and restore the corrupted files?
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The command can be run to verify and restore the corrupted files SFC /scan now.
Regardless of the reason, it might be, in case you encounter any associated troubles, windows 10 consists of the System File Checker (SFC), a command-line device designed to experiment with the integrity and repair missing or corrupted machine files with running replacements.
Gadget record Checker is an application in Microsoft windows that permits customers to scan for and repair corrupted windows gadget files.
First, log into windows 10. next, click on the quest button on the lowest left, and type the command prompt. while you see the Command set off program indexed, right-click it, then click Run as Administrator. The System File Checker will then begin strolling.
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The principle of competitive exclusion states that two species cannot __________ Multiple Choice coevolve. have the same carrying capacity. be part of the same food chain. occupy the same niche.
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The principle of competitive exclusion states that two species cannot occupy the same niche.
What is competitive exclusion?Two species cannot coexist in the same ecological niche for very long without one becoming extinct or being driven out because of competition for limited resources.As an illustration of competitive exclusion, the red squirrels in Britain have displaced the grey squirrels.There were fewer red squirrels as a result of diseases, competitive exclusion, and the removal of hazelnuts.Red squirrels were eventually displaced by gray squirrels, who quickly adjusted to their surroundings.Two species with identical niches cannot survive indefinitely, according to the "competitive exclusion principle" (CEP).The competitive exclusion principle states that when two competing living forms attempt to occupy the same niche, only one outcome is possible: One of them will eradicate the other.Learn more about principle of competitive exclusion here:
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It is said that "animals do not have plastids, but they depend on them". explain.
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Answer: because this has a relation with the food chain of lower levels like herbivores.
Explanation:
as you know plastids are the main source of food production in plants. As they meet the food requirements in plants but animals don't have it so the lower levels like deer who eat grass depend on these plastids of plants to fulfill the need for food and nutrients as animals cant process or made their food. and carnivores fed on these herbivores for their food consumption. so you can indirectly relate this statement to the food chain. and this is how animals depend on plastids found in plants.
Parents that are heterozygous for having freckles (dominant) are crossed. Which correctly describes their offspring?
Twenty-five percent have freckles.
Twenty-five percent are Ff.
Seventy-five percent have freckles.
Seventy-five percent are Ff.
Answers
Answer:
Seventy-five percent have freckles
Answer:75% have freckles
Explanation:edgenity 2022
When your cell makes a new compound, such as glycogen from many glucose molecules, usable energy is needed and is obtained by which action?
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When cells makes a new compound, such as glycogen from many glucose molecules, usable energy is needed and is obtained by removing a phosphate group from ATP, producing energy plus ADP plus phosphate.
What is ATP?This is referred to as adenosine triphosphate and is the energy currency of the cells.
This is usually formed from the synthesis of ADP and a phosphate group thereby making it the most appropriate choice.
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Begin at the ovaries of susie and the testes of billy.track the processes of ovulation for susie and ejaculation of billy.
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Ovulation and ejaculation are the processes that involve the release of the female and male gamete for the process of fertilization.
Ovulation
The release of an egg from one of a woman's ovaries is known as ovulation.Ovulation usually lasts for one day and takes place two weeks before a woman anticipates getting her period, in the midst of her menstrual cycle. However, the procedure takes a different amount of time for every woman, and it might even change from month to month. A sperm cell can fertilize an egg when it exits a woman's ovary and enters the fallopian tube. Sperm can survive for three to five days inside a woman's reproductive system.The uterine walls thicken during ovulation in order to accommodate a fertilized egg. On the other hand, if the egg is not fertilized, the uterine lining is lost around two weeks later, which results in menstruation.Ejaculation
Ejaculation, the male reproductive system's discharge of sperm cells and seminal plasma. Sperm are transported from the testicles and the epididymis, where they are stored, to the beginning of the urethra, a hollow tube that runs through the pen!s and transports either sperm or urine. In the second stage, known as the actual ejaculation, the semen is transported through the urethra and expelled from the body.learn more about Ovulation and ejaculation here: https://brainly.com/question/13349245
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During the relaxation period, Ca2 is re-sequestered into the sarcoplasmic reticulum by Group of answer choices Ca2 ATPases T-tubules Ca2 channels voltage gated channels
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During the relaxation period, Ca2 is re-sequestered into the sarcoplasmic reticulum by Ca2+ AtPAse.
During relaxation, Ca2+ is actively transported by the Ca2+ ATPase, from the cytosol into the sarcoplasmic reticulum.Each time we move a muscle, trillions of myosin motors work together to make that movement possible. Calcium ions are used by our muscle cells to coordinate this significant molecular effort.Muscles can unwind using the calcium pump following this frantic burst of calcium-induced contraction. The sarcoplasmic reticulum's membrane contains the pump. Sometimes it is so abundant that it may account for 90% of the protein there. By returning calcium ions to the sarcoplasmic reticulum with the help of ATP, the muscle is able to relax by lowering the calcium concentration surrounding the actin and myosin filaments. Similar pumps can be found in the cell membrane of the majority of cells, and calcium ions are also used for signaling inside other cells.learn more about sarcoplasmic reticulum here: https://brainly.com/question/10596906
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Ca2 is re-sequestered into the sarcoplasmic reticulum during the relaxation period by Ca2+ ATPase.
What do you mean by sarcoplasmic reticulum?Similar to the smooth endoplasmic reticulum in other cells, the sarcoplasmic reticulum (SR) is a membrane-bound structure found in muscle cells. The SR's primary job is to hold calcium ions (Ca2+). The concentration of calcium ions within a cell is 10,000 times lower than the concentration of calcium ions outside the cell, ensuring that calcium ion levels are kept relatively constant.
Fish cardiomyocytes have various types of sarcoplasmic reticulum (SR): junctional SR(jSR). free SR (fSR)The sarcolemmal network or the t-tubular network is peripherally coupled with jSR paperwork. Rows of proteins referred to as "feet" are seen between the 2 membranes in peripheral connections where the jSR profile coincides with the sarcolemma or t-tubule. These proteins function as ryanodine receptor channels that are launched by Ca2+. Because fSR is not closely connected to any other membrane system, it may be found anywhere in the cardiomyocyte.
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