Answer:
c) inadequate retrieval cues.
Explanation:
Retrieval failure occurs when information that is stored in long-term memory cannot be retrieved or accessed. This can happen due to a variety of reasons, but inadequate retrieval cues are one of the most common causes. Retrieval cues are pieces of information or stimuli that are associated with a particular memory, and they help to trigger the retrieval of that memory. When there are no or insufficient retrieval cues available, it becomes difficult to recall the memory even though it is stored in the long-term memory.
Lack of motivation, poor encoding of information, and lack of attention can also affect the ability to retrieve long-term memories, but they are not specifically related to retrieval failure.
what is the main function of the lymphatic system? what is the main function of the lymphatic system? the lymphatic system produces high fluid pressures to assist in lymph motion. the lymphatic system makes blood cells through a process known as hematopoiesis. the lymphatic system returns leaked fluid and plasma proteins that escape from the bloodstream to the blood. the lymphatic system transports blood and lymph throughout the body
The main function of the lymphatic system is:
The lymphatic system returns leaked fluid and plasma proteins that escape from the bloodstream back to the blood. This process is essential for maintaining fluid balance in the body and ensuring that blood circulation remains efficient.
The lymphatic system also plays a crucial role in the immune system, as it transports infection-fighting white blood cells and helps remove waste products, bacteria, and dead cells from tissues.
The lymphatic system transports lymph, a clear fluid containing white blood cells, throughout the body. This fluid is collected from tissues and then filtered through lymph nodes, where harmful substances are removed before the fluid is returned to the bloodstream. The lymphatic system also helps in the absorption of fats and fat-soluble vitamins from the digestive system.
Therefore the correct answer is "The lymphatic system returns leaked fluid and plasma proteins that escape from the bloodstream to the blood."
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pls help me for my work I have 20 mins left :((
The movement of the colored water drop in the apparatus is an indication of the rate of respiration in the locust.
Two other variables that the student needs to control are Diet and Temperature
How is respiration tested with colored water?The filter paper soaked in a liquid that absorbs CO₂ is placed in the apparatus to trap any CO₂ produced during the locust's respiration. When the locust breathes out, it releases CO₂, which is absorbed by the filter paper, creating a vacuum in the apparatus.
The colored water drop then moves to fill this vacuum. The faster the locust respires, the more CO₂ it produces, leading to a larger vacuum, and the faster the colored water drop moves to fill it. Therefore, the movement of the colored water drop in the apparatus is an indirect measure of the rate of respiration in the locust.
Diet: The locusts' diet can significantly affect their metabolism and respiration rates. Therefore, to ensure the validity of the results, the student must ensure that both male and female locusts are fed the same diet, in the same quantities, and at the same time intervals.
Temperature: The locusts' body temperature can also affect their respiration rates, so the student must control the temperature of the environment in which the locusts are kept. Ideally, the temperature should be maintained at a constant level that is optimal for the locusts' metabolic processes, and it should be the same for both male and female locusts throughout the experiment.
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Image transcribed:
A student uses this apparatus to investigate aerobic respiration in a locust.
coloured water drop
filter paper soaked in a liquid to absorb CO₂
locust
The coloured water drop moves during the investigation.
Explain why the coloured water drop moves during the investigation.
coloured water drop
filter paper soaked in a liquid to absorb CO₂
locust
The student compares the aerobic respiration of male and female locusts.
He uses three male locusts and three female locusts.
He uses locusts of the same age and the same species.
Explain two other variables that the student needs to control.
a population of wild rabbits is made up of rabbits that are red, brown, and white. the allele for red (r) is incompletely dominant to the allele for white (w) with heterozygotes being brown. the current rabbit population has 500 total individuals with 80 of those individuals being white. over the period of three years, the population grows to 850 individuals. assume that this population is and remains in hardy-weinberg equilibrium. when the rabbit population reaches 850 individuals, how many of these individuals can be expected to be brown?
When the rabbit population reaches 850 individuals, we can expect 408 of these individuals to be brown.
In a population in Hardy-Weinberg equilibrium, the frequencies of alleles and genotypes remain constant from generation to generation. The Hardy-Weinberg equilibrium equation is:
p^2 + 2pq + q^2 = 1
where p is the frequency of the dominant allele (red), q is the frequency of the recessive allele (white), and 2pq is the frequency of heterozygotes (brown).
First, we need to calculate the frequency of the recessive allele (q). We know that 80 out of 500 individuals are white, so the frequency of the recessive allele can be calculated as:
q = sqrt(80/500) = 0.4
The frequency of the dominant allele (p) can be calculated as:
p = 1 - q = 0.6
Now, we can calculate the expected frequency of heterozygotes (brown) using the equation:
2pq = 2(0.6)(0.4) = 0.48
Finally, we can calculate the expected number of individuals that are brown in the population of 850 rabbits by multiplying the frequency of heterozygotes by the total population size:
0.48 x 850 = 408 individuals
Therefore, when the rabbit population reaches 850 individuals, we can expect 408 of these individuals to be brown.
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which describes the gallbladder? multiple choice question. it is a sac on the underside of the liver. it is a blind-ended pouch at initial segment of the large intestine. it is a dilated segment of the pancreatic duct, just before it enters the duodenum. it is a central hollow space within a lobule of the liver.
Answer:
it is a thin walled pear shaped sack right underneath the liver
the addition of sugar residues to the protein after translation is called glycation. glycosylation. exonuclease digestion. proteolysis. phosphorylation.
The addition of sugar residues to the protein after translation is called glycosylation.
Glycosylation is a post-translational modification process in which a sugar molecule is added to a protein or lipid. This process plays an important role in protein folding, stability, and function, as well as in cell-cell recognition and signaling.
Glycation, on the other hand, is a non-enzymatic process in which sugars react with proteins, lipids, and nucleic acids to form irreversible products called advanced glycation end-products (AGEs). This process can lead to the formation of abnormal protein aggregates and contribute to the development of diseases such as diabetes, Alzheimer's, and atherosclerosis.
Exonuclease digestion is a process of removing nucleotides from the end of DNA or RNA strands, proteolysis is a process of breaking down proteins into smaller peptides or amino acids, and phosphorylation is a post-translational modification process in which a phosphate group is added to a protein, which can modify its function, localization, and interaction with other molecules.
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which ovarian cell is the main source of progesterone in the follicular phase? in the luteal phase? what causes the shift in production from one cell type to the other?
After ovulation, granulosa cells and theca-lutein cells combine to form the corpus luteum, which is principally in charge of producing progesterone.
The majority of the follicular phase sees the emergence of progesterone in the adrenal cortex, where it is controlled by an unidentified ovarian component and repressed by ethinyl estradiol. Prior to ovulation, the ovaries become the new location of progesterone production.
Progesterone causes the uterus to start forming a highly vascularized bed for a fertilised egg. The corpus luteum generates progesterone if pregnancy occurs up until about week 10 of the pregnancy.
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the choice of preferring the phylogenetic tree with the fewest number of character state changes follows what concept? principle of maximum parsimony phylogenetic species concept analogy punctuated equilibrium principle of maximum homology
According to the maximization of the parsimony principle, the phylogenetic tree with the fewest character state changes is preferred, the correct option is (a).
The principle of maximum parsimony is widely used in phylogenetics to infer evolutionary relationships between different species. It is based on the assumption that the evolutionary process tends to minimize the number of changes required to reach a particular state.
Therefore, the phylogenetic tree with the fewest number of character state changes is considered the most probable. This concept is widely used in molecular systematics, where DNA or protein sequences are used to reconstruct evolutionary relationships between different species, the correct option is (a).
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The complete question is:
The choice of preferring the phylogenetic tree with the fewest number of character state changes follows what concept?
a. principle of maximum parsimony
b. phylogenetic species
c. concept analogy punctuated equilibrium
d. principle of maximum homology
alleles are described as . group of answer choices alternate versions of a gene homologous chromosomes environmental factors that affect gene expression alternate phenotypes
Alleles are described as alternate versions of a gene.
The correct answer is alternate versions of a gene.
In any given organism, genes are responsible for coding specific traits, and these traits can have different forms or variations. These variations are known as alleles. Each individual organism carries two alleles for each gene - one from its mother and one from its father.
These alleles determine the physical traits or phenotypes that an organism displays. When both alleles are the same, the organism is said to be homozygous for that gene, and when the alleles are different, the organism is heterozygous.
Some alleles are dominant, meaning that they will be expressed even if the organism carries only one copy of that allele. Other alleles are recessive, meaning that they will be expressed only if the organism carries two copies of the recessive allele.
Alleles are not to be confused with homologous chromosomes, which are pairs of chromosomes that contain the same set of genes but may have different alleles for each gene.
Environmental factors can also affect gene expression, but they are not alleles themselves. Alternate phenotypes are the different physical traits that can result from different combinations of alleles but are not the actual alleles.
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describe the uptake of mineral salts after taking a meal containing less mineral salts
After eating a food low in mineral salts, a process known as absorption causes the body to absorb the mineral salts. The bulk of nutrient absorption happens in the small intestine, where absorption happens.
What happens when vegetation absorb mineral salts?All necessary minerals enter the plant's cellular structure naturally through a process known as mineral uptake, which usually follows the same route as water. Mineral nutrients are absorbed by both the roots and the foliage.
What elements impact absorption of mineral salts?Both internal and external variables influence how quickly minerals are absorbed. Temperature, light, oxygen concentration, H+ ion concentration, plant growth, and ageing are the main contributors to these variables.
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How massive are photons?
a.
They have no mass
c.
About the same as a quark
b.
About the same as a proton
d.
About the same as an electron
The correct answer is option a: They have no mass. Photons are considered massless particles, which means they have zero rest mass.
What are photons?Photons are elementary particles of light and electromagnetic radiation. They are the fundamental unit of light and are considered as massless particles that travel at the speed of light in a vacuum. Photons have both wave-like and particle-like properties and are quantized, meaning that they can exist only in discrete packets of energy called quanta. The energy of a photon is directly proportional to its frequency, according to the famous equation E=hf, where E is the energy of the photon, h is Planck's constant, and f is the frequency of the photon. Photons are important in many areas of physics, including quantum mechanics, electromagnetism, and thermodynamics.
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what would happen if a defect in s phase occurred during the cell cycle? group of answer choices there could be a lack of cytoplasm. there could be too few chromosomes in a daughter cell following cytokinesis. none of these. all organelles may not be duplicated.
The correct answer is b. There could be too few chromosomes.
Chromosomes play a critical role in the transmission of genetic information from one generation to the next and are essential for the proper functioning and development of all living organisms. They are long, coiled-up strands of DNA that are tightly packed with proteins called histones, which help to organize and compact the DNA. During cell division, chromosomes condense even further and can be easily visualized under a microscope.
Chromosomes come in pairs in most organisms, with one chromosome inherited from each parent. The number and shape of chromosomes vary between different species, and changes in chromosome number or structure can lead to genetic disorders. This allows scientists to study the structure and behavior of chromosomes during different stages of the cell cycle, such as mitosis and meiosis.
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Complete Question:
what could show up if an illness in s phase came about during the mobile cycle? institution of solution alternatives
A). there could be a lack of cytoplasm.
B). there will be too few chromosomes
C). in a daughter cell following cytokinesis.
D). none of these.
E). all organelles won't be duplicated.
based on the passage, which metabolic pathways are upregulated during the transition from intrauterine to extrauterine environment?
Based on the passage, the metabolic pathways that are upregulated during the transition from intrauterine to extrauterine environment include glycolysis, gluconeogenesis, and fatty acid oxidation.
The transition from the intrauterine environment, where the fetus relies on maternal supply of nutrients, to the extrauterine environment, where the newborn must adapt to an independent life, requires these metabolic changes to support energy production and growth.
Glycolysis is upregulated to increase glucose breakdown and produce ATP, a critical energy molecule. This process is essential for the newborn's immediate energy needs during the adaptation period.
Gluconeogenesis, on the other hand, is activated to synthesize glucose from non-carbohydrate sources like amino acids and lactate. This pathway helps maintain blood glucose levels in the absence of a constant maternal supply.
Additionally, fatty acid oxidation is upregulated to utilize the stored lipids in the newborn's adipose tissue for energy production. This process provides a steady energy source for the growing baby and spares glucose for essential organs like the brain.
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Why do we use Punnett Squares today? Explain in your words
how it works?
Answer:
Punnett squares are used today as a tool to predict the probability of certain traits being expressed in offspring. They are named after the scientist Reginald Punnett, who invented them in the early 20th century. The Punnett square works by organizing the alleles (different forms of a gene) from the parents into a grid. Each parent's alleles are placed along the top and left side of the grid. Then, every combination of alleles is shown in the boxes inside the grid. For example, if one parent has the alleles Aa and the other parent has the alleles aa, the grid would look like this: | a | a --|---|--- A |Aa | Aa --|---|--- a |aa | aa In this case, the offspring have a 50% chance of inheriting the dominant A allele and a
0 / 350
Which of the following is the most likely scientific explanation for why so
many people report improvement after wearing this jewelry?
4
OA. The ions in the jewelry change the electric field around the body,
improving blood flow.
OB. Some people may feel improvement after a week because their
body is healing naturally, without help from the ions.
OC. The company paid actors to answer questions about the jewelry.
OD. The ions in the jewelry improve energy flow through the body.
The correct answer is option B: Some people may feel improvement after a week because their body is healing naturally, without help from the ions. This is the placebo effect.
What is the placebo effect?
The placebo effect is a phenomenon in which a person experiences a perceived improvement in their condition or symptoms after receiving a treatment or intervention that has no active medical ingredients or therapeutic effects. The placebo effect occurs because of the power of the mind and the expectation that the treatment will work, rather than any actual physical or chemical properties of the treatment itself.
Placebos are frequently used in clinical trials to assist investigators to find out the effectiveness of a new treatment or medication. Participants in the trial are divided into two groups, with one group receiving the active treatment and the other group receiving a placebo. The placebo group serves as a control group, allowing researchers to compare the effects of the active treatment with the effects of the placebo.
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which statement is true about natural selection? choose the correct answer. responses it forms new traits. it forms new traits. it acts on variable traits. it acts on variable traits. it forms new genetic material. it forms new genetic material. it acts on genetic material directly.
"Organisms with more favourable features" are more likely to survive and procreate through a process called natural selection. As a form of evolution, natural selection works. Hence (b) is the correct option.
More environmental adaptation increases an organism's chance of surviving and dispersing the genes that contributed to its success. In the course of time, this process leads to species changing and diverging. Genetic diversity is needed, modification-based descent results, and varying levels of reproductive success are all factors. Variation, inheritance, selection, and time are the four guiding concepts of evolution. These are thought to be the elements of the natural selection-based evolutionary mechanism.
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which statement is true about natural selection? choose the correct answer.
a. responses it forms new traits.
b. it forms new traits. it acts on variable traits.
c. it acts on variable traits. it forms new genetic material.
d. it forms new genetic material.
e. it acts on genetic material directly.
Use each of the following terms in a separate
sentence.
1. DNA
2. Sexual reproduction
3. Gene
4. Gene expression
5. Noncoding DNA
Please help
If 32/200 pea plants die, what will be the new frequency for the tall allele?
The new frequency of the tall allele is 0.616.
To determine the new frequency for the tall allele?
Assuming that the tall allele is dominant and the short allele is recessive, we can use the Hardy-Weinberg equation to determine the new frequency of the tall allele after the 32 pea plants die:
p^2 + 2pq + q^2 = 1
Where
p is the frequency of the dominant (tall) allele q is the frequency of the recessive (short) alleleLet's assume that initially, the population was in Hardy-Weinberg equilibrium, which means that p^2 represents the frequency of homozygous dominant individuals (TT), 2pq represents the frequency of heterozygous individuals (Tt), and q^2 represents the frequency of homozygous recessive individuals (tt).
If 32 out of 200 pea plants die, that means 168 survive. Therefore, the new frequency of the recessive allele (q) is
q = sqrt(32/168) = 0.384
To find the frequency of the dominant allele (p), we can use the equation:
p = 1 - q = 1 - 0.384 = 0.616
Therefore, the new frequency of the tall allele is 0.616.
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how will you know if the spice you chose does indeed function as an antibiotic
It is important to note that spices are not drugs and should not be used as a substitute for medical treatment. However, some spices have been found to exhibit antimicrobial properties and may be used in combination with medical treatment.
To determine if a spice functions as an antibiotic, you can follow these steps:
1. Research: Conduct a literature review to find studies and scientific papers that have already investigated the antibiotic properties of the spice you have chosen. This will provide you with a foundation of knowledge and help you understand what to expect in your own testing.
2. Prepare samples: Obtain a pure sample of the spice and create different concentrations by dissolving it in a solvent, such as water or alcohol. This will allow you to test various doses of the spice for its antibiotic potential.
3. Choose bacteria: Select a bacterial strain that is known to cause infections and is susceptible to antibiotics. This will be the target for your spice's antibiotic action.
4. Perform an agar diffusion test: Inoculate an agar plate with the chosen bacterial strain. Place small discs or wells containing different concentrations of the spice solution on the agar surface. Incubate the plate at the appropriate temperature for the bacteria to grow.
5. Observe and measure: After the incubation period, observe the agar plate for zones of inhibition, which are clear areas surrounding the discs or wells where the bacterial growth has been inhibited. Measure the diameter of these zones to quantify the spice's antibiotic activity.
6. Compare with controls: Include positive and negative controls in your experiment, such as a known antibiotic and a solvent without the spice, respectively. Compare the zones of inhibition from your spice to these controls to evaluate its effectiveness as an antibiotic.
7. Analyze and conclude: Analyze your results, taking into account the concentration of the spice, the size of the zones of inhibition, and the comparison to the controls. If your chosen spice shows significant inhibition of bacterial growth, it can be concluded that it functions as an antibiotic. However, further testing and research may be needed to confirm its effectiveness and potential use in medical applications.
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blood in arteries a. is always oxygen-rich and always travels away from the heart. b. is always oxygen-rich. c. travels from the lungs. d. always travels away from the heart. e. always travels toward the heart.
The blood in arteries is always oxygen-rich and always travels away from the heart. The correct answer is "a. is always oxygen-rich and always travels away from the heart."
Blood in the arteries, with the exception of the pulmonary artery, is oxygen-rich because it has just left the lungs after being oxygenated. Arteries are designed to carry blood away from the heart, while veins return blood to the heart.
Arteries carry oxygen-rich blood from the heart to various parts of the body. This oxygenated blood provides the necessary energy and nutrients for the cells to function properly.
Therefore, the blood in arteries is always oxygen-rich and always travels away from the heart. The option (a) is correct.
The complete question is:
Blood in arteries;
a. is always oxygen-rich and always travels away from the heart.
b. is always oxygen-rich.
c. travels from the lungs.
d. always travels away from the heart.
e. always travels toward the heart.
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4. e. positive feedback is not used for a long time, it is used when you want to do something mistakes in feedback loops a. b. c. d. e. f. g. h. besides being in your blood, where else could glucose go? (2x) what two hormones help with blood glucose regulation: what organ and what other job does it have? what are the two cells found in the pancreas and what does each do? why does the blood glucose levels usually rise three times per day?
1)
Ans: A system is more likely to deviate from its equilibrium state and become more unstable if there are positive feedback loops that intensify or magnify changes.
Negative feedback often buffers or dampens changes, maintaining the system's stability and equilibrium.All sort of criticism is valuable because it enables us to develop and advance in our work.
We must talk and make plans as necessary.
A system is more likely to deviate from its equilibrium state and become more unstable if there are positive feedback loops that intensify or magnify changes. Negative feedback often buffers or dampens changes, maintaining the system's stability and equilibrium.
2)
Ans: The glucose can either be stored in the liver's glycogen or taken up by cells so they can perform respiration and provide us with ATP.
Both glucagon and insulin are vital hormones that are crucial in controlling your blood sugar (sugar).
3)
Ans:Your pancreas is the source of both hormones: beta cells in your pancreas produce and release insulin, and alpha cells produce and release glucagon.
Islets of Langerhans and acinar cells are the two main cell types found in the pancreas. In the early years of diabetes research,
4)
Ans: The pancreas have mainly two types of cells namely islets of Langerhans and acinar cells. In the early years of research on diabetes, the extract of this gland was tested on diabetic patients
5)
Ans: We all know that our bodies require glucose to build energy, therefore having additional energy in the morning is necessary. To get ready for the day ahead, the body begins to use glucose that has been stored. As you know the growth hormone, cortisol, and the catecholamines cause the liver to produce more glucose at the same moment into the bloodstream. It usually takes place between 2 and 3 in the morning to get the body ready for the day. Your diabetic medication doses from the day before begin to wear off as these events are occurring. The combination of all these events causes a spike in blood sugar levels in the morning.
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Summarize the carbon cycle.
Please help I WILL MARK BRAINLIST!!!!!!!!!!!!
Answer:The carbon cycle is a method for nature to reuse carbon atoms. These travel from the atmosphere, into organisms, and then back into the air repeatedly. This cycle ensures that carbon atoms aren't put to waste.
Explanation:
you are trying to identify an organism. it is an animal, but it contains no muscle tissue. it is not diploblastic. it must be a(n)
The organism described in the question is likely a cnidarian.
Cnidarians are a diverse group of animals that include jellyfish, corals, and sea anemones. They are characterized by the presence of specialized cells called cnidocytes, which contain stinging structures called nematocysts that are used for prey capture and defense.
Unlike other animals, cnidarians lack muscle tissue and instead rely on contractile cells to move and manipulate their bodies. They are also not diploblastic, meaning they have more than two germ layers during development, which allows for more complex organ systems to form.
Cnidarians are found in a wide range of aquatic environments and play important roles in marine ecosystems. Some cnidarians, such as coral reefs, provide important habitat for other marine organisms, while others, such as jellyfish, can have negative impacts on marine ecosystems and human activities.
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plssssss helppppppppppppp
B
BBBBBBBBBBBBBBBBBBBBBBBBBBBBB
please help me... I don't get it
Answer:I think ppNN
Explanation: if it’s purebred roundpants both the parents were pp and if it’s long nose NN so I THINK it’s ppNN sorry if I am wrong
fill in the following blanks with taste, olfaction, both, or neither: a. sensory signals bypass the thalamus before reaching cerebral cortex: b. receptor neurons can generate action potentials: c. transduction is mechanically mediated: d. receptor neurons have high concentration of cl-: e. some of its receptors release atp:
The following blanks with taste, olfaction, both, or neither or the following parts are a. neither, b. both, c. olfaction, d. olfaction, e. taste.
a) Sensory signals bypass the thalamus before reaching cerebral cortex " neither missing .
b) receptor neurons can generate both action potentials
c) transduction is mechanically mediated olfaction
d) receptor neurons have high concentration of teste.
Sensory signals refer to the information that is detected and transmitted by sensory receptors in response to environmental stimuli, such as light, sound, touch, taste, and smell. These signals are then transmitted through the nervous system to the brain, where they are processed and interpreted to create our perception of the world around us.
Sensory signals are an important part of our everyday experience, as they allow us to perceive the environment and respond appropriately. The five main types of sensory signals are visual (related to sight), auditory (related to hearing), somatosensory (related to touch and pain), gustatory (related to taste), and olfactory (related to smell).
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since not biology What relationships exist among reasoning, evidence, and explanation?(1 point)
Responses
Evidence is associated directly with explanation, but not reasoning.
Reasoning is associated directly with explanation, but not evidence.
Evidence is used to connect the explanation and the reasoning.
Reasoning is used to connect the evidence and the explanation.
What do the landscape paintings tell you about the values and beliefs of the Chinese during the Tang and Song
dynasties
Answer:
Explanation:
isnt this history
at a neuromuscular junction, the muscle fiber membrane folds, forming a group of answer choices motor end plate. motor unit. neurotransmitter. motor end cup. motor neuron.
A motor neuron is a nerve cell that controls the contraction of muscle fibers.
At a neuromuscular junction, the muscle fiber membrane folds, forming a motor end plate. The motor end plate is the specialized area of the muscle fiber membrane that receives signals from the motor neuron via the release of neurotransmitters such as acetylcholine. This signal causes the muscle fiber to contract.
A motor unit is a group of muscle fibers innervated by a single motor neuron. A neurotransmitter is a chemical substance released by neurons that transmits signals across synapses to other neurons or muscle cells. A motor end cup is not a term commonly used to describe a structure in the neuromuscular junction.
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which of the following is the main difference between a docked vesicle and a primed vesicle? group of answer choices when a vesicle is docked, synaptotagmin is bound only to the vesicle membrane, whereas when a vesicle is primed, synaptotagmin is bound to the vesicle and the presynaptic membrane when a vesicle is docked, it is ready for fusion as soon as calcium binds to synaptotagmin, whereas when a vesicle is primed, it cannot fuse with the plasma membrane when calcium enters the presynaptic terminal when a vesicle is docked, synaptotagmin is not associated with the core complex proteins, whereas when a vesicle is primed, synaptotagmin is associated with the core complex proteins when a vesicle is docked, synaptotagmin is in a folded configuration, whereas when a vesicle is primed, it is in a straight configuration when a vesicle is docked, the calcium channels are not associated with any core complex proteins, whereas when a vesicle is primed the calcium channels are held in close proximity to the core complex.
When a vesicle is docked, it is in a stable state in close proximity to the presynaptic membrane, but it cannot undergo fusion without further stimulation.
A primed vesicle, on the other hand, is in a state of readiness for immediate fusion. The main difference between the two is that primed vesicles have undergone a conformational change, which prepares them for fusion. During priming, the SNARE complex forms between the vesicle and the presynaptic membrane, synaptotagmin binds to the core complex proteins, and calcium channels are held in close proximity to the core complex.
These changes allow the vesicle to fuse rapidly with the plasma membrane when calcium enters the presynaptic terminal. In summary, when a vesicle is docked, it is in a stable but inactive state, while a primed vesicle is ready for immediate fusion with the presynaptic membrane.
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when proteins are broken down and used as a source of energy, which stage of respiration does the carbon skeleton not enter?
Answer: The Electron Transport Chain
Explanation:
Respiration is a metabolic process that occurs in cells and involves the conversion of glucose and oxygen into energy, carbon dioxide, and water. The carbon skeleton produced from the breakdown of proteins does not enter the Krebs cycle directly.
When proteins are broken down, they release amino acids that can be converted into energy. The first step in this process is the removal of the amino group from the amino acid, which produces a carbon skeleton. The carbon skeleton can then enter into the Krebs cycle, which is a stage of cellular respiration that occurs in the mitochondria of cells.The Krebs cycle is also known as the citric acid cycle or tricarboxylic acid cycle. It involves the breakdown of acetyl-CoA into carbon dioxide and water. During this process, energy is released in the form of ATP, which is used by cells to carry out their functions.However, the carbon skeleton produced from the breakdown of proteins does not enter the Krebs cycle directly. Instead, it is converted into an intermediate molecule called pyruvate, which can enter the Krebs cycle. This conversion occurs in a process known as transamination, which involves the transfer of an amino group from the amino acid to a molecule called α-ketoglutarate. The resulting molecule is then converted into pyruvate, which can enter the Krebs cycle.
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