which macronutrients yield krebs cycle intermediates? (check all that apply)
Answers
Krebs cycle intermediates are the metabolites generated in the citric acid cycle or Krebs cycle.
The Krebs cycle takes place in the mitochondrial matrix of eukaryotic cells. The three primary macronutrients that generate Krebs cycle intermediates are carbohydrates, fats, and proteins. The correct answer to the question "which macronutrients yield Krebs cycle intermediates?" would be carbohydrates and fats. This is because carbohydrates are converted to glucose, which enters the citric acid cycle through pyruvate oxidation. Likewise, fats are broken down to acetyl-CoA, which also enters the Krebs cycle. The citric acid cycle intermediates that are generated are as follows: citrate, cis-aconitate, isocitrate, alpha-ketoglutarate, succinyl-CoA, succinate, fumarate, malate, and oxaloacetate. These intermediates participate in many biosynthetic pathways and fuel various cellular processes.
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Related Questions
whats the conclusion for meiosis and mitosis
Answers
Answer:
Explanation:
Mitosis ends up in two identical daughter cells, but meiosis results in four sex cells.
Mitosis results in two nuclei that are identical to the original nucleus. Meiosis, on the other hand, results in four nuclei, each having half the number of chromosomes of the original cell. In animals, meiosis only occurs in the cells that give rise to the sex cells (gametes), i.e., the egg and the sperm.
A population culture begins with 15 strands of bacteria and then doubles every 4 hours. This can be modeled as 15(2)^((t)/(4)), where t is time in hours. How many strands of bacteria are present at 12
Answers
At 12 hours, there are 120 strands of bacteria present.
The population of bacteria can be modeled using the equation P(t) = \(15(2)^(t/4)\), where P(t) represents the number of strands of bacteria at time t in hours.
To find the number of strands of bacteria at 12 hours, we substitute t = 12 into the equation:
P(12) = \(15(2)^(12/4)\)
P(12) = \(15(2)^3\)
P(12) = 15(8)
P(12) = 120
Therefore, at 12 hours, there are 120 strands of bacteria present.
It's important to note that the given population model assumes exponential growth, where the number of strands doubles every 4 hours. Starting with an initial population of 15 strands, the exponent in the equation (t/4) represents the number of doubling periods that have occurred. Each doubling period corresponds to 4 hours of time.
In this case, at 12 hours, three doubling periods have occurred (12/4 = 3). Starting with the initial 15 strands, each doubling period doubles the population, resulting in a final count of 15 * \(2^3\) = 120 strands of bacteria at 12 hours.
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Are there any parts of the human body that get oxygen directly from the air and not from the blood? Are there nuclear reactions going on in our bodies?
Answers
Answer:
The cornea is the only part of a human body that has no blood supply; it gets oxygen directly through the air. The cornea is the fastest healing tissue in the human body, thus, most corneal abrasions will heal within 24-36 hours.
Nuclear reactions do indeed occur in the human body, but the body does not use them.
Please answer both parts of this question and include a model.
1. Describe this mode of propagation, and draw a model to supplement your description. 2. Explain how it differs from the mode of propagation along the neuron.
Answers
1. In passive propagation, as the action potential goes from the start to the end of an axon, it decays or becomes weaker, and it is the most common method of transmitting electrical signals in neurons. 2. It differs from the mode of propagation along the neuron, the action potential is actively propagated along the axon without decay.
A passive signal can be generated by a receptor or by a spike in the membrane potential of an adjacent neuron. In the neuron, an electrical current flows from the dendrite to the cell body, down the axon and into the terminal, causing a change in the potential across the membrane. The current also generates an electrical field that spreads throughout the surrounding tissue, this electrical field, known as the extracellular potential, decays with distance and is much smaller than the intracellular potential. So therefore a passive signal can be detected by electrodes placed outside the neuron.
An action potential is initiated at the axon hillock, propagated along the axon, and terminates at the presynaptic terminal. In the neuron, an electrical current flows from the dendrite to the cell body, down the axon and into the terminal, causing a change in the potential across the membrane. The current also generates an electrical field that spreads throughout the surrounding tissue, this electrical field, known as the extracellular potential, decays with distance and is much smaller than the intracellular potential. So therefore it differs from the mode of propagation along the neuron, the action potential is actively propagated along the axon without decay.
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at the end of termination, do the small and large ribosomal subunits separate from one another, and the polypeptide is released?
Answers
At the end of termination, the small and large ribosomal subunits separate from one another, and the polypeptide is released.
Thus, the correct answer is "Yes, they do".
Terminаtion happens when trаnslаtion ends when the ribosome reаches а STOP codon (UАА, UАG or UGА). There аre no tRNА molecules with аnticodons for stop codons, insteаd protein releаse fаctors recognize these codons when they аrrive аt the А site. Binding of а releаse protein cаuses the polypeptide (protein) to be releаsed from the ribosome. The ribosome subunits dissociаte (split) from eаch other аnd cаn be reаssembled lаter for аnother round of protein synthesis.
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Four friends were in the grocery store and they wondered which freezer is better at keeping the food cold; an upright freezer with a door or a deep freezer without a lid? Read the following explanations and decide which person you agree with. a: Theresa: “The upright freezers are more efficient because they have doors to keep the convection currents circulating.” b: Kristen: “Actually the deep freezer has a thick layer of ice on the sides for an insulator and when you reach to the bottom things feel colder.” c: Brianna: “I think it is the deep freezer because the cold air stays in the bottom because cold air is denser.” d: Aaron: “The upright freezer is better because it keeps the cold air in. I have seen the cold air fall out when I open the freezer door.”
Answers
Answer:
I got c
Explanation:
Brianna: “I think it is the deep freezer because the cold air stays in the bottom because cold air is more dense.”
active transport
or
passive transport
Answers
Answer:
Passive transport
Explanation:
Passive transport is transport of substances without the requirement of energy. In contrast, active transport is the movement of substances that requires energy.
In the picture, the molecules are moving from a high concentration to a low concentration. This is transport down a concentration gradient, rather than against a concentration gradient.
Transporting molecules down the concentration gradient does not require energy, and is therefore passive transport.
All of the following statements about what happens during the fasting / post-absorptive state are correct EXCEPT:
A.) Muscle is breaking protein into amino acids.
B.) Fat cells are breaking tryglicerides into fatty acids. C.) Many tissues rely on ketones for energy
D.) Amino acids are broken down to ketones
E.) All of these statements about the post-absorptive state are correct
Answers
The correct answer is E.) All of these statements about the post-absorptive state are correct. The state of the body between meals or while fasting is referred to as the post-absorptive state.
Amino acids are broken down to ketones, which can be used by the body's cells as an alternative source of fuel during the fasting/post-absorptive state. In addition to ketones, the brain may also use glucose generated by the liver from glycogen or other non-carbohydrate sources. However, some tissues, such as skeletal muscle, may break down protein into amino acids and use them for fuel. Fat cells break down triglycerides into fatty acids, which are also used as fuel by various tissues. During the fasting/post-absorptive state, the body makes use of its energy reserves to keep critical organs, such as the brain, functioning correctly. Many tissues, such as the brain, red blood cells, and the renal medulla, rely on ketones for energy. The body also takes steps to preserve its energy reserves during this time, such as reducing its basal metabolic rate. However, the body's energy stores can only last for a limited period, and eventually, it will need to refuel.
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To What Extent Are Calls for Greater Minority Representation in COVID Vaccine Research Ethically Justified
Answers
There are a lot of people out there who have ethical concerns about COVID Vaccines. However, based on opinion polls, it seems that many people also have security concerns. So, it seems that the COVID Vaccine in general is ethical. However, a small number of people who have ethical concerns about the vaccine will still refuse to get it.
Ethical considerations and coverage of COVID-19 payments are quite complicated thought. The public has varying degrees of confidence in the COVID-19 vaccine, possibly due to limited information regarding the type of vaccine, date of availability, and safety profile.
Entering 2021, COVID-19 has been a pandemic for more than a year. So far, most countries in the world have not succeeded in suppressing the spread of the disease. Efforts to make social disclosure have a negative impact on the economy and social welfare. An effective vaccine is the beacon of hope for the world. The COVID-19 vaccine is the first vaccine to be developed in a very short period. The pressure from the world to apply the vaccine is very high.
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temperature for this enzyme
Answers
Answer:
C ) 60 degree
Explanation:
Answer:
C
Explanation:
based on information given in the passage, stabilizing interactions are most likely to occur between phosphate groups on ip6 and which of the following amino acids lining the tcd binding pocket?
Answers
The amino acids lining the TCD (Toll/interleukin-1 receptor/resistance) binding pocket or their interactions with phosphate groups on IP6.
The passage does not mention any specific amino acids or their interactions with IP6.To determine which amino acids are likely to form stabilizing interactions with phosphate groups on IP6 in the TCD binding pocket, we would need additional information about the specific protein and its binding site.The nature of these interactions would depend on the protein's structure, amino acid composition, and the specific binding properties of IP6.
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Keep in mind what an independent variable is. What are some variables that can affect a person’s heart rate? Choose one variable that you would like to design an experiment for. State your hypothesis of how the independent variable might affect heart rate. Please be specific about what the independent variable is.
Answers
Here the experiment is on heart rate of a person
Controlled Variable:
TimeExplanation:
Both shall workout for the same time.Measure their heart rate and see who's heart rate is higher.Independent Variable:
AgeExplanation:
Age is different for everyone and independent.Make them workout for the similar amount of time then measure their heart rate.Older person will have greater heart rate.=================================================================
The person with less heartbeat means he has a great fitness.The person with greater heartbeat means he has a bad fitness.Whose experiments supported the existence of a life force?.
Answers
Explaination: I searched it. *wink*
More energy can be released from fat molecule than from glucose molecule because the fat molecule contains more
Answers
Answer:
chemicals bonds
Explanation:
the more bonds, the more energy released!
how does the function of an intracellular receptor differ from that of a membrane receptor?
Answers
Intracellular receptors directly influence gene expression, while membrane receptors initiate intracellular signaling cascades to modulate cellular responses.
Intracellular receptors and membrane receptors are both essential for cellular signaling but differ in their locations and functions. Intracellular receptors are located within the cytoplasm or nucleus of the cell, while membrane receptors are embedded in the plasma membrane.
Intracellular receptors typically bind to small, lipophilic ligands that can pass through the cell membrane. Upon ligand binding, these receptors undergo conformational changes, allowing them to act as transcription factors and regulate gene expression. This process involves direct interaction with DNA, resulting in alterations in protein synthesis.
On the other hand, membrane receptors interact with extracellular signaling molecules, often larger or polar, which cannot cross the cell membrane. Ligand binding to membrane receptors activates intracellular signaling pathways through various mechanisms, such as enzyme activation, ion channel regulation, or recruitment of adapter proteins. These cascades ultimately lead to changes in cellular activity, but do not directly involve receptor interaction with DNA.
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Explain the endosymbiotic theory and explain whether it is true with details.
Answers
Explanation:
The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. In this theory, the first eukaryotic cell was probably an amoeba-like cell that got nutrients by phagocytosis and contained a nucleus that formed when a piece of the cytoplasmic membrane pinched off around the chromosomes. Some of these amoeba-like organisms ingested prokaryotic cells that then survived within the organism and developed a symbiotic relationship. Mitochondria formed when bacteria capable of aerobic respiration were ingested; chloroplasts formed when photosynthetic bacteria were ingested. They eventually lost their cell wall and much of their DNA because they were not of benefit within the host cell. Mitochondria and chloroplasts cannot grow outside their host cell.
Evidence for this is based on the following:
Chloroplasts are the same size as prokaryotic cells, divide by binary fission, and, like bacteria, have Fts proteins at their division plane. The mitochondria are the same size as prokaryotic cells, divide by binary fission, and the mitochondria of some protists have Fts homologs at their division plane. Mitochondria and chloroplasts have their own DNA that is circular, not linear. Mitochondria and chloroplasts have their own ribosomes that have 30S and 50S subunits, not 40S and 60S. Several more primitive eukaryotic microbes, such as Giardia and Trichomonas have a nuclear membrane but no mitochondria.
Which of the main structures of a neuron releases the signals used to communicate with other neurons or cells?
Choose matching definition
1. the synapse
2. 100 billion
3. soma
4. terminal buttons
Answers
The main structures of a neuron releases the signals used to communicate with other neurons or cells is (4). terminal buttons correct option.
The signal is sent to neighboring neurons through the terminal buttons, which are found at the end of the neuron. The terminal button has a synapse a gap at the end. Signals are sent from one neuron to another through neurotransmitters.
The foundation of the nervous system are neurons. They communicate with various body parts by both receiving and sending signals. This is done through both electrical and physical means. The transfer of information is facilitated by a variety of distinct types of neurons.
The sensory neurons transmit data to the brain from the sense receptor cells dispersed throughout the body. In contrast, motor neurons are responsible for sending information from the brain to the muscles. Information is passed between various neurons in the body by interneurons.
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Behind your house, there's a gorgeous pond filled with frogs. You notice that the frogs behind Mr. Archer's house often have three legs. You start wondering if the fertilizer that Mr. Archer uses for his lawn is causing the deformities in the frogs. You collect 10 frogs and put the special fertilizer in their container (Group A). You put another 10 frogs and place them in a different container with just water (Group B). A week later, 7 out of 10 of the frogs in group A grew only three legs. The frogs in group B grew four legs.
What is the independent variable?
Answers
I have a test in biology 9th grade, it’s about organ system and how the orange work together. How do I explain ?
Answers
Explanation:
i hope this can help you in any way
Help !!!
Climate change
Answers
Is the cell membrane of a potato cell permeable, selectively permeable, or impermeable?
Answers
Answer:
impermable
Explanation:
yes
quizlet covid-19 vaccine training: general overview of immunization best practices for healthcare providers
Answers
The quizlet on COVID-19 vaccine training provides a general overview of immunization best practices for healthcare providers. This training aims to equip healthcare providers with the necessary knowledge and skills to administer the COVID-19 vaccine safely and effectively.
Here is a step-by-step explanation of what the training might cover:
1. Importance of immunization: The training would emphasize the importance of immunization in preventing the spread of infectious diseases, such as COVID-19. It would highlight the role of healthcare providers in promoting vaccination.
2. Vaccine types and components: The training would discuss different types of COVID-19 vaccines, such as mRNA vaccines or viral vector vaccines. It would explain the components of these vaccines, including the antigen and other ingredients.
3. Storage and handling: Healthcare providers would learn about the proper storage and handling requirements for the COVID-19 vaccines. This includes maintaining the cold chain and preventing any temperature fluctuations that could affect vaccine efficacy.
4. Vaccine administration: The training would cover the correct techniques for vaccine administration, such as site selection, needle size, and proper injection technique. It would emphasize the importance of following the recommended dosage and schedule.
5. Adverse events and reporting: Healthcare providers would be educated on possible adverse events following vaccination and how to recognize and manage them. They would also learn the process for reporting adverse events to the appropriate authorities.
6. Patient education and counseling: The training would focus on effective communication with patients, providing clear and accurate information about the COVID-19 vaccine, addressing common concerns, and answering questions.
7. Documentation and record-keeping: Healthcare providers would learn how to document vaccine administration accurately and maintain proper records, including vaccine lot numbers, dates, and patient information.
By completing this training, healthcare providers would be equipped with the knowledge and skills necessary to administer the COVID-19 vaccine safely and effectively.
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Can you please give me 5 parts of the plants? PLEASE
Answers
Root,Stem,Leaves,Flowers,Fruits and seeds
Explanation:
yan lang po makakaya ko
You don’t have a lot to say about it all this weekend so it’s good
Answers
very confused is this a question?
In sickle cell anemia haemoglobin shows only on difference at position number_______
Answers
In sickle cell anemia, hemoglobin shows only one difference at position number 6.
Hemoglobin is a protein found in red blood cells that is responsible for carrying oxygen throughout the body. In individuals with sickle cell anemia, there is a mutation in the gene that codes for hemoglobin. This mutation causes a change in the structure of the hemoglobin molecule, leading to the characteristic sickle-shaped red blood cells.
The specific difference in hemoglobin seen in sickle cell anemia occurs at position number 6 of the hemoglobin protein chain. Normally, at this position, the amino acid glutamic acid is present. However, in sickle cell anemia, a substitution of valine for glutamic acid occurs at position 6. This single amino acid change alters the physical properties of the hemoglobin molecule, resulting in the formation of abnormal sickle-shaped red blood cells.
The presence of this valine substitution affects the ability of the hemoglobin to carry and release oxygen efficiently. It also causes the red blood cells to become rigid and prone to getting stuck in small blood vessels, leading to episodes of pain and organ damage in individuals with sickle cell anemia.
In summary, the only difference in hemoglobin seen in sickle cell anemia occurs at position number 6, where a substitution of valine for glutamic acid takes place. This single amino acid change is responsible for the characteristic features and complications associated with sickle cell anemia.
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Plants use different compounds to complete the process of photosynthesis. What do plants give off as a waste product during photosynthesis?
Responses
Carbon dioxide
Carbon dioxide
Nitrogen
Nitrogen
Oxygen
Oxygen
Water
Answers
Answer:
The answer is C) Oxygen.
This is what plants gives off as a waste product during photosynthesis
What percentage of those over age 65 can see well without eyeglasses? 1.33 percent 2.10 percent 3.17 percent 4.26 percent.
Answers
According to the given terms in the question, the percentage of those over age 65 who can see well without eyeglasses is 10 percent.
An individual's eyesight can decline as they age.
This can be caused by various factors such as disease, heredity, or physical damage. With age, vision loss becomes more prevalent, and many people require the assistance of eyeglasses, contact lenses, or other devices to see correctly.
According to research, only 10% of people over the age of 65 can see well without eyeglasses. The remainder of seniors over the age of 65 require the assistance of eyeglasses or other visual aids to maintain good eyesight.
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The activation of the ____ gene on the ____ chromosome causes the differentiation of the sexes.
Answers
The activation of the SRY (Sex-determining Region Y) gene on the Y chromosome causes the differentiation of the sexes. This gene is responsible for the development of male characteristics during embryonic development.
It triggers a cascade of genetic and hormonal events that lead to the formation of testes and the subsequent production of testosterone. The absence of the SRY gene results in the default development of female characteristics. However, the process of sex determination is not always straightforward, and various genetic and environmental factors can lead to differences in sexual development.
Intersex conditions, where individuals have ambiguous genitalia or reproductive organs, are examples of such complexities. Understanding the molecular mechanisms of sex determination and the factors that influence them is essential for promoting healthy sexual development and addressing the needs of diverse individuals.
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I need help with this. The topic is renewable and non renewable resources
Answers
Plastic packaging has non-renewable resources, whereas paper packaging is renewable. The difference between renewable and non-renewable energy sources is that renewables use resources that are not depleted or regenerated in nature.
What do you understand by non-renewable resources?Non-renewable sources are those that have a limited reserve on our planet and that do not regenerate - or that take thousands of years to do so. Oil is perhaps the best known example, are ores and natural gas.
The difference between renewable and non-renewable energy sources is that renewables use resources that are not depleted or regenerated in nature. Non-renewable energy sources, on the other hand, use resources that are depleted in nature and, therefore, can generate several problems for the environment.
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a neuron conveys a message to a neighboring neuron across a junction called a
Answers
A neuron conveys a message to a neighboring neuron across a junction called a synapse.
A synapse is a junction between neurons where information is transmitted. The presynaptic neuron releases neurotransmitters into the synaptic cleft, a small gap between the presynaptic and postsynaptic neurons. These neurotransmitters bind to receptors on the postsynaptic neuron, leading to changes in its membrane potential. Excitatory neurotransmitters depolarize the postsynaptic neuron, making it more likely to generate an action potential, while inhibitory neurotransmitters hyperpolarize it, reducing the likelihood of an action potential.
The neurotransmitters are then either reuptake, broken down, or diffuse away. The synapse plays a critical role in the transmission and integration of signals within the nervous system, allowing for the communication and coordination of neuronal activity.
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