In feedback inhibition, the inhibitor of the biochemical pathway is often.
Answers
In feedback inhibition, the inhibitor of the biochemical pathway is often the end product of the pathway. Feedback inhibition is the process of regulating a biochemical pathway by the inhibition of an initial enzyme by the pathway's final product or its by-product.
It is an important process in the regulation of metabolic pathways and maintaining homeostasis within the cell. In feedback inhibition, the end product of the pathway acts as an inhibitor of the initial enzyme of the pathway. This results in a decrease in the production of the pathway's end product, which is beneficial for the cell.
The inhibition is reversible and can be overcome by the depletion of the inhibitor or by other factors that can reactivate the initial enzyme. Feedback inhibition is a common mechanism in living organisms and is involved in the regulation of a variety of biochemical pathways, including glycolysis, the citric acid cycle, and the synthesis of amino acids and nucleotides.
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In feedback inhibition, the inhibitor is often a product of the biochemical pathway itself. This regulation helps cells maintain homeostasis by ensuring overproduction doesn't occur. When product levels decrease, the pathway can resume.
Explanation:In feedback inhibition, the inhibitor of the biochemical pathway is often a product of the pathway itself. This mechanism helps to maintain homeostasis in cells by ensuring that biochemical pathways do not continue when there is an abundance of the product. When the product levels decrease, the inhibition is lifted and the pathway can resume its function. Here is an example: In the biochemical pathway that synthesizes the amino acid tryptophan, when tryptophan levels are sufficient in the cell, tryptophan acts as an inhibitor and binds to the enzyme responsible for the first step of the pathway, thus inhibiting the further synthesis of tryptophan.
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Related Questions
Which term refers to a partially purified mixture of proteins?
Select one:
a. Extract
b. Fraction
c. Precipitate
d. Crystal
e. Supernatant
Answers
The term that refers to a partially purified mixture of proteins is: Fraction. (Option b)
b. Fraction: A fraction refers to a partially purified mixture of proteins obtained from a biological sample. In the field of biochemistry, researchers often need to isolate and study specific proteins from complex mixtures found in cells, tissues, or other biological samples. Fractionation is the process of separating the mixture into different components or fractions based on their physical or chemical properties.
During fractionation, various techniques are employed to separate the proteins based on characteristics such as size, charge, solubility, or affinity. These techniques may include centrifugation, chromatography, precipitation, or other separation methods. Each fraction contains a subset of proteins that share similar properties or behaviors.
It's important to note that fractions are not completely pure, as they typically still contain a mixture of proteins. However, the goal of fractionation is to obtain a more concentrated and specific subset of proteins for further study or analysis. These fractions can serve as starting points for more refined purification steps or characterization of the proteins present.
Researchers can analyze the composition, structure, function, or other properties of proteins within a fraction to gain insights into their roles in biological processes. By isolating and studying specific fractions, researchers can better understand the functions and interactions of individual proteins within complex biological systems.
In summary, a fraction refers to a partially purified mixture of proteins obtained through fractionation techniques, which separate the proteins based on their properties. Fractions provide researchers with subsets of proteins to study, even though they are not completely pure.
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If want to solve an environment , they are most likely to use what?
Answers
Answer: technology
Explanation:
what is role of degenerating corpus luteum if fertilisation takes place in the Fallopian tube?
Answers
Explanation:
the main purpose of the corpus luteum is that it pulses out hormones, including progesterone. But if the egg isn't fertilised, the corpus luteum stops secreting progesterone.
why is there less and less energy available at each trophic level as you move up the pyramid from the bottom to top
Answers
The decrease in available energy as you move up the trophic levels of a pyramid is primarily due to the inefficiency of energy transfer and the energy lost as heat during metabolic processes. Here are the main reasons for the decrease in energy:
Energy Loss through Respiration: Organisms at each trophic level, including primary producers (plants) and consumers (herbivores, carnivores, etc.), require energy for their own metabolic processes and to carry out life functions. This energy is obtained through the consumption of food and is utilized for growth, reproduction, movement, and other activities. However, during these metabolic processes, a significant portion of the energy is lost as heat through respiration, reducing the amount of energy available for transfer to the next trophic level.
Inefficient Energy Transfer: Energy transfer between trophic levels is not 100% efficient. When organisms at one trophic level consume organisms at a lower trophic level, not all of the energy stored in the consumed organisms is assimilated and converted into biomass by the consumer. Some energy is lost as waste, such as undigested materials or metabolic byproducts, reducing the energy available for transfer to the next trophic level.
Limited Energy Conversion: Energy stored in one trophic level is used by organisms for their own maintenance and growth, but only a portion of that energy is converted into biomass that can be consumed by organisms at the next trophic level. For example, plants capture solar energy and convert it into chemical energy through photosynthesis. However, only a fraction of the captured energy is converted into plant biomass that can be consumed by herbivores. This limited energy conversion further reduces the energy available as you move up the trophic levels.
Energy Loss through Predation and Decomposition: In ecosystems, energy is also lost through predation and decomposition. When predators consume prey, only a part of the prey's biomass is assimilated by the predator. The remaining biomass, including bones, fur, feathers, etc., is not digested and is lost as waste. Similarly, when organisms die, the energy stored in their bodies is released through decomposition, with decomposers breaking down organic matter and returning it to the ecosystem as nutrients. However, during decomposition, energy is lost as heat and through the metabolic processes of decomposers.
These factors collectively contribute to the decrease in available energy at each trophic level as you move up the pyramid from the bottom to the top. As a result, the biomass and number of organisms generally decrease at higher trophic levels, reflecting the diminishing energy available to support the higher-level consumers in an ecosystem.
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Please help, will give brainiest
QUESTION 1.
Element X on Planet Qatar has three known isotopes: X-121 with a relative abundance of 43.2%, X-123 with a relative abundance of 53.1%, and X-129 with a relative abundance of 3.70%. What is the average atomic mass in amu of Element X given this information?
QUESTION 2.
How did Rutherford's experiment change the way scientists had previously viewed atomic structure? How did this pave the way for subsequent changes up to and including the currently accepted quantum mechanical atomic model?
QUESTION 3.
How is percent abundance related to average atomic mass?
Answers
a) The percentage abundance determines how much we have the isotope.
b) The relative atomic mass is 122.5 amu
c) The Rutherford's model explained the atom.
What is the relative abundance?It is clear that the isotope that we know are the atoms of an element that has the same atomic number but they do not have the same mass number. The implication of this is that the elements that are in question have many atoms of the element but they are not exactly alike as we would have expected.
Given that we have the element X we can be able to write that;
Relative atomic mass = Weighted average of all the isotopes
As such we have;
(121 * 0.432) + (123 * 0.531) + (129 * 0.0370)
52.27 + 65.31 + 4.773
=122.35 amu
The Rutherford's model gives a good idea about the way that the atom of the element may look like and this is the entire idea of the model to help us to make sense of the atom.
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A student wants to investigate osmosis. A carrot was placed in a dilute solution.
a) What will happen to its mass?
b) The carrot was placed in 0.4 mol/dm 3 solution. Its mass did not change.
c) What does this tell us about the concentration of the carrot?
d) The carrot was placed in a concentrated solution. What will happen to its mass?
Answers
a) When a carrot is submerged in a diluted solution, water will osmosis into the carrot cells. As a result, the cells will become turgid and the carrot's mass will rise.
b) The carrot's inability to alter in mass when submerged in a 0.4 mol/dm3 solution shows that the solute concentration—which includes salts and sugars—within the carrot cells is also 0.4 mol/dm3. There is no net movement of water into or out of the cells at this concentration.
c) This indicates that the carrot and the 0.4 mol/dm3 solution have come to an equilibrium. At this concentration, the passage of water into and out of the cells is balanced, and there is no net gain or loss of water.
d) If the carrot is submerged in a concentrated solution, water will osmotically escape from the cells, plasmolyzing them. The mass of the carrot will shrink as a result.
OsmosisOsmosis is the transfer of water molecules from a region with a high concentration of water to a region with a low concentration of water through a membrane that is selectively permeable. Since a diluted solution contains more water molecules than carrot cells do, water will osmotically flow from the fluid into the cells. The carrot cells become turgid, which is another word for inflated and hard, as a result of this water inflow. The carrot's mass so grows as a result.The carrot's inertness in a 0.4 mol/dm3 solution shows that the solute concentration inside the cells of the carrot is also 0.4 mol/dm3. At this concentration, there is no net gain or loss of water since the flow of water into and out of the cells is balanced. This is due to the fact that the solute concentration in the carrot cells and the solution are the same. Isotonic describes this condition.learn more about osmosis here
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You are presented with several single-celled organisms, including one thought to belong to the kingdom fungi. what unique feature could help you identify the fungus?
Answers
One unique feature that could help identify the fungus is the presence of chitin in its cell walls
Chitin is a complex polymer found in the cell walls of fungus that is not found in the cell walls of other single-celled organisms such as bacteria or protists. Furthermore, because fungi are heterotrophic creatures that absorb nutrients from their surroundings, they may be distinguished by their mode of feeding. Fungi have a unique way of reproduction that involves the formation of spores that may be distributed in the environment. Seeing any of these distinguishing characteristics may aid in identifying the organism as a fungus.
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What is the process that involve an exchange of genetic material between non sister chromatids during meiosis?.
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In neurons, why is the concentration of ions (e.g., K , Na ) on the two sides of the plasma membrane not equal
Answers
Neurons are cells that are responsible for conducting nerve impulses. The plasma membrane separates the extracellular fluid from the cytoplasm. Ions like sodium and potassium (Na+ and K+) are critical to the proper functioning of neurons.
The unequal distribution of ions across the plasma membrane is a fundamental feature of nerve cells. In neurons, the concentration of ions on the two sides of the plasma membrane is not equal. This unequal distribution is due to the activity of ion channels that are present in the membrane. These channels allow ions to move across the membrane and maintain a balance between the inside and outside of the cell. The concentration of potassium ions is higher inside the cell, while the concentration of sodium ions is higher outside the cell. This concentration gradient is maintained by the sodium-potassium pump, which pumps out three sodium ions for every two potassium ions that enter the cell.
The unequal distribution of ions across the plasma membrane allows nerve cells to generate and transmit electrical signals, which is the basis of their function.
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a Seris RCl circuit has a resistor R=1000Ω ,an inductor reactance in X_L =750Ω ,a capacitor whose capacitive reactance is X_C =500Ω and an AC power supply whose voltage is 0.5v. a) determine the magnitute of the circuit's impedance B) Deterrmine the current through the circuit ,I+ c)Determine the voltage across the resistor d) Determine the voltage accross the inductor. e) Determine the voltage across the capacitor.f) Determine the phase angle between the current and the voltage g) What is the impedance of the circuit at the reasonal frequency.
"
Answers
To solve the given series RLC circuit problem, we can use the concepts of impedance and phasors in AC circuits.
a) The magnitude of the circuit's impedance (Z) can be calculated using the formula:Z\(= \sqrt{(R^2 + (X_L - X_C)^2)}\)
Plugging in the given values:
Z = \(\sqrt{(1000^2 + (750 - 500)^2) = \\\)\(\sqrt{(1000000 + 250000) =} \sqrt{1250000= 1118.03} }\)
Therefore, the magnitude of the circuit's impedance is approximately 1118.03 Ω.
b) The current through the circuit (I) can be calculated using Ohm's Law:I = V/Z
Plugging in the given values:\(I = 0.5 V / 1118.03\)\(=0.000447 A\)
Therefore, the current through the circuit is approximately 0.000447 A.
c) The voltage across the resistor (V_R) is given by Ohm's Law:\(V_R = I * R\)
Plugging in the given values:\(V_R = 0.000447 A * 1000 = 0.447 V\)
Therefore, the voltage across the resistor is 0.447 V.
d) The voltage across the inductor (V_L) is given by:\(V_L = I * X_L\)
Plugging in the given values:
\(V_L = 0.000447 A * 750= 0.335 V\)
Therefore, the voltage across the inductor is 0.335 V.
e) The voltage across the capacitor (V_C) is given by:\(V_C = I * X_C\)Plugging in the given values:
V_C \(0.000447 A * 500= 0.224 V\)
Therefore, the voltage across the capacitor is 0.224 V.
f) The phase angle (θ) between the current and the voltage can be calculated using the arctan function:θ = arctan((X_L - X_C)/R)
Plugging in the given values:
θ = arctan\(((750 - 500)/1000) =\)degrees
Therefore, the phase angle between the current and the voltage is approximately 14.04 degrees.
g) The resonant frequency (f_res) can be determined using the formula:
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You have sampled a population in which you know that the percentage of the homozygous recessive genotype (aa) is 25%. Calculate the frequency of the "A" allele. *
1 point
0.5
0.4
0.25
0.6
Answers
Answer:
.5
Explanation:
Remember that p = dominant allele, q = recessive allele. Use the Hardy-Weinberg equations:
p^2 + 2pq + q^2 = 1 (AA + Aa + aa = 1)
So aa = q^2. Take the square root, and we'll have just q by itself.
√a^2 = √.25 = .5
So the frequency of the a allele (recessive) = .5.
p + q = 1
p + .5 = 1
p = .5
The frequency of the A allele is .5.
Describe the survival strategy of the wasp
Answers
Some of the key survival strategies of wasps include aggression and defense, efficient foraging, social behavior, adaptive nesting strategies, and reproductive strategies. These strategies have helped wasps thrive in a wide range of environments.
Wasps are highly aggressive and have powerful stingers that they use to defend themselves and their nests from predators. Many wasp species also have sharp mandibles that they use for biting and tearing apart prey. Wasps are opportunistic foragers and are able to efficiently locate and collect food. Some wasps hunt and capture other insects, while others feed on nectar and fruit. Many wasp species are highly social and live in large colonies or nests.
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as a woman holding her breath swims deeper and deeper beneath the water's surface, her density
Answers
As a woman holds her breath and swims deeper into the water, her density increases. The deeper she goes, the more the pressure increases and the denser she becomes.
This is because the air in her lungs is compressed due to the pressure of the water, making her overall body more compact and dense. This increase in density can have an impact on her ability to swim and move through the water. It may require more effort to move her body and limbs due to the increased resistance from the water. Additionally, holding her breath for too long can lead to oxygen deprivation and potentially result in blacking out or drowning. Therefore, it is important to practice safe and controlled breathing techniques when swimming at deeper depths.
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Hii please help i will give brainliest to whoever is correct !! :)
Which of the following is not typically represented by pyramids in ecology?
mass
energy flow
populations in ecology
predator and prey relationships
Answers
Answer:
B i think
Explanation:
just guessing it
Can somebody help ?!!!!
Answers
Answer:
speed=distance÷time
2m/s,1.5m/s,1.25m/s,0.5m/s
Explanation:
speed=distance÷time
20/10=2m/s
30/20=1.5m/s
50/40=1.25m/s
30/60=0.5m/s
Based on his experiments, Mendel concluded that each trait was controlled by two _____.
Answers
The affinity of enzymes for substrates is important for enzymatic efficiency. therefore low affinity = faster reaction rate, and high affinity= slower reaction rate.
Answers
The affinity of enzymes for substrates is important for enzymatic efficiency. High affinity typically leads to a faster reaction rate, while low affinity can result in a slower reaction rate.
Enzymes with high affinity for their substrates have a strong binding interaction, which allows them to efficiently convert the substrate into product. This strong binding ensures that the enzyme can capture and hold onto the substrate molecule effectively, increasing the chances of successful catalysis and speeding up the reaction rate.
On the other hand, enzymes with lower affinity for their substrates have weaker binding interactions. This weaker binding can result in a slower reaction rate as the enzyme has a reduced ability to effectively capture and hold onto the substrate. With lower affinity, the enzyme-substrate complex may form less frequently, leading to a slower conversion of substrate into product.
Therefore, in general, higher affinity between an enzyme and its substrate is associated with a faster reaction rate, while lower affinity can lead to a slower reaction rate. However, it's important to note that other factors, such as enzyme and substrate concentrations, temperature, and pH, can also influence the overall enzymatic efficiency and reaction rate.
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Complete Question:
How does the affinity between enzymes and substrates affect enzymatic efficiency? Specifically, explain the relationship between low affinity and reaction rate, as well as the relationship between high affinity and reaction rate.
how did the cell membrane acts as a soild and a liquid and show flexibility?
Answers
Answer: "The cell membrane is not a solid structure. It is made of millions of smaller molecules that create a flexible and porous container."
Explanation: Was their answers to pick from if so i could help give the exact answer
Which organelle is labeled I ?
Answers
Answer:
it must be (núcleos)
Explanation:
........,.....
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What is required for a Salter's duck type of wave machine to be successful?
A. It would need to be very long and the tides would need to rise at least 5 meters.
B. It would need the tides to rise at least 5 meters and a large budget for maintenance.
C. It would need to be very long and far from any boats.
D. It would have a large budget for maintenance and need to be far from any boats.
Answers
Answer:
A
Explanation:
it would need to be very long and the tides would need to rise at least 5 meters.
How many chromosomes are present in one cell at the end of prophase?
Answers
The parent cell is now split in two, creating 2 daughter cells, and nuclear division starts. Half of all initial 46 chromosomes, and 23 chromosomes, will be present in each daughter cell.
A parent cell initially copies its DNA before going through mitosis. As an illustration, human cells typically have 46 chromosomes. That number rises to 92 chromosomes during replication. When the cell moves through prophase, metaphase, anaphase, and telophase, it still has 92 chromosomes. The nucleus' protective membrane is destroyed during the prophase's conclusion, releasing the chromosomes. As the centriole moves in the direction of the cell's opposite pole, the mitotic spindle spreads from across cell between both the centrioles. Each new cell receives one identical copy whenever the cell divides since the copies are separated.
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All of the following are examples of environmental influences on maturation except
A. heredity
B. physical activity
C. caregiver responsiveness
D. nutrition
Answers
The only factor that is not an environmental factor listed is heredity.
What are environmental influences ?
There are two kinds of factors that could affect an individual and these are;
Hereditary factorsEnvironmental factors.Environmental factors are those factors that are products of your surrounding. They do not depend on inheritance. The only factor that is not an environmental factor listed is heredity.
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Answer:
A. heredity
Explanation:
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i crosscut my nail with a knife . will it ever heal???
Answers
how to calculate minimum codon length
Answers
To calculate the minimum codon length, you will need to use the following equation: minimum codon length = total codon length / number of codons. For example, if the total codon length is 300 nucleotides and the number of codons is 10, the minimum codon length would be 30.
The codon length is the total length of a gene's mRNA sequence. The length of a codon is the total number of nucleotides that make up a codon, which is three. The number of codons is the total number of codons present in a gene's mRNA sequence.
In order to calculate the minimum codon length, you must first calculate the total codon length by multiplying the number of codons by the length of a codon. For example, if the number of codons is 10 and the length of a codon is three, then the total codon length would be 30.
Once you have the total codon length, you can then divide this by the number of codons to get the minimum codon length. For example, if the total codon length is 300 nucleotides and the number of codons is 10, then the minimum codon length would be 30.
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Which compound has the highest fuel value ? Why?
Answers
Answer:
Hydrogen gas has the highest calorific value of 150 KJ/g among all the fuels. So, hydrogen gas is considered to be an extremely good fuel.
Explanation:
Answer:
Hydrogen has the highest fuel value. I hope I helped
after passing through a healthy kidney urine composition is approximately
Answers
After passing through a healthy kidney, urine composition is approximately 95% water and 5% waste products such as urea, creatinine, and various ions and electrolytes. The exact composition of urine can vary depending on factors such as diet, hydration levels, and overall health status. In addition to waste products, urine may also contain trace amounts of hormones, drugs, and other substances that have been filtered from the blood. Overall, the kidneys play a crucial role in maintaining the body's fluid balance and eliminating waste products from the body. Any disruptions to this process can lead to a range of health problems, including kidney disease, urinary tract infections, and electrolyte imbalances.
After passing through a healthy kidney, urine composition is approximately as follows:
1. Water: Urine is about 95% water, which is necessary for carrying waste products out of the body.
2. Urea: Urea is a waste product resulting from the breakdown of proteins, and it accounts for roughly 2-2.5% of urine composition.
3. Chloride, Sodium, and Potassium: These electrolytes help regulate the balance of fluids in the body and contribute to approximately 1-2% of urine composition.
4. Creatinine: Creatinine, a waste product from muscle metabolism, is typically present in urine at levels of around 0.2%.
5. Other substances: Various other substances, such as uric acid, ammonium, and small amounts of proteins, hormones, and metabolites, make up the remaining 0.3-1% of urine composition.
In summary, after passing through a healthy kidney, urine composition is approximately 95% water, 2-2.5% urea, 1-2% electrolytes, 0.2% creatinine, and 0.3-1% other substances.
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After the Department of Health, Education, and Welfare (DHEW) regulations were published in 1973, all research using human subjects was required to:a.avoid using subjects who were ill, mentally impaired, or dying.b.obtain informed consent from all subjects prior to enrollment in a study.c.review only studies in which risk of harm to subjects is especially high.d.undergo full institutional review to examine risks and benefits to subjects.DThe Department of Health, Education, and Welfare regulations were published in 1973, providing for the protection of human research subjects and requiring full institutional review of all studies involving human subjects.
Answers
Medical research must adhere to ethical guidelines that preserve the health and promote respect for all participants. Children, expectant mothers, and people who are close to death may freely agree to participate in study.
Federal laws permit the IRB to forego getting signed consent if it determines that: The only document tying the subject to the research is the informed consent form; and the main risk is the possibility of harm from a confidentiality violation. Medical research must adhere to ethical guidelines that preserve the health and promote respect for all participants. Children, expectant mothers, and people who are close to death may freely agree to participate in study. People who are confined to institutions could feel compelled to engage in research either they fear getting hurt or because they think they might get unique benefits. Respecting the patient autonomy requires doctors to provide patients with the medical information & treatment options they need to make their own decisions. It also encourages informed consent, honesty, and confidentiality.
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Define probability. Apply the term to a coin toss.
Answers
When flipping a coin, the likelihood of getting a tail is equal to the likelihood of getting a head, or 50%, hence the probability of receiving a tail is P(Tail) = P(T) = 1/2.
What is the probability to toss a coin?The likelihood of getting a head on a coin toss is P(Head) = P(H) = 1/2. There are just two outcomes that can occur when you toss a coin: a head (H) or a tail (T) (L). There is always a 50% chance of getting either head or tail when we flip a coin.
The probability to toss two coins having heads on both coins is 1/4 and there will be 16 outcomes if tossing 4 coins.
Therefore, if a coin is tossed, the probability might be either "head" (H) or "tail" (T). It is impossible to anticipate whether a coin toss will result in a "head" or "tail."
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What does a plant or animal need in order to survive in a certain ecosystem?
Answers
What are the three tasks that DNA must be able to perform in all organisms?
Answers
Answer:
It must store genetic information, instruct cells to produce needed molecules, & copy itself.
Explanation: