Oxaloacetate is a key intermediate in the citric acid cycle, but it is also needed as a precursor for the synthesis of glucose during gluconeogenesis. Oxaloacetate is also fairly chemically unstable and undergoes spontaneous decarboxylation to pyruvate. Although oxaloacetate is not depleted by participation in the citric acid cycle, it can become depleted by other processes, necessitating its replenishment by various synthetic pathways. Use the Metabolic Map to identify enzymes that can replenish oxaloacetate or other citric acid cycle intermediates.

Answers

Answer 1

Answer:

Carboxylating pyruvate into oxaloacetate.

Explanation:

Replenishing oxaloacetate is done by carboxylating pyruvate into oxaloacetate through a process that is catalyzed by an enzyme called pyruvate carboxylase. This enzyme speed up the process and the replenishing of oxaloacetate occur quickly and the oxaloacetate is ready to function and participate in different chemical reactions.

Answer 2

Depleted oxaloacetate can be replenished by the carboxylation of pyruvate by the enzyme pyruvate carboxylase.

What is the citric acid cycle?

The citric acid cycle is a cycle which is important in aerobic respiration for the production of ATP.

One of the intermediates in the citric acid cycle is oxaloacetate.

Oxaloacetate combines with acetylcoA to form citric acid.

Depleted oxaloacetate can be replenished by the carboxylation of pyruvate by the enzyme pyruvate carboxylase.

Learn more about oxaloacetate at: https://brainly.com/question/8075492


Related Questions

Writing Assignment So, you have learned about how the denaturation of proteins works during lecture, and you have seen examples in these videos. Now you will write a 2-3 page discussion of protein denaturation putting all that together Make sure you cover both the academic side (lecture knowledge) and practical side (what is done and observed in the lab). Make sure the answers to the following questions are contained in your report. Do NOT just answer them separately, but rather incorporate them seamlessly in your writing. This is a very broad topic, so comprehensive coverage is hardly expected, but you should demonstrate a good beginner's understanding. As usual, reference any and all resources you use.
a. What are the various levels of organization that any protein structure may have that gives it its 3-dimentional shape?Which of these changes during denaturation?
b. For each change made to a protein solution that you have seen or read about how might it affect the interactions that are involved in a protein's shape?
c. What is the difference between precipitation of a protein and its denaturation? How might you tell the difference?
d. If changing the pH of an enzyme solution greatly reduces the activity of that enzyme without precipitation, how could you tell in the lab if it were the result of denaturation or just going to a pH that is just not a good one for the enzyme? And how would a change in pH impact or even stop enzyme function without denaturation? (Consider the enzymes that are active in your stomach, such as pepsin-discussed in Wikipedia.)
e. For changes that precipitate a protein, are some more likely than others to be denaturation?
f. Etc. If you find one aspect of what you've see more interesting, go ahead and learn more and expand that section of your report and keep the other sections more basic.

Answers

Solution :

Denaturing may be defined as the process where the protein they lose their shape and their function because there is a change in the pH level or in the temperature. Although the amino acids sequence also known as primary structure, it does not change. But the shape of the protein might change a little bit so much that it can become dysfunctional in which protein is considered to be denatured.

The enzyme, Pepsin, the breakdown protein in our stomach only operates at a very low pH level. At higher pH level, the pepsin's configuration the way the polypeptide chain is being folded up in a 3 dimension begins to change. The pH level of the stomach is maintained at a low level to ensure that pepsin continues for the digest protein and that it does not denature.

There are 4 levels of the protein structure --- they are the primary, the secondary, the tertiary and the quaternary.

The primary protein is a particular sequence of amino acids in each of the polypeptide chain that makes the protein. The final protein structure depends on this sequence.

Secondary structure arise from the interactions between the neighboring or nearby the amino acids as polypeptide starts folding into 3D form.

The tertiary structure is the most important of structural levels in determining.

The quaternary structure also applies to the proteins made from more than one polypeptide chain.

What is the optimal pH that this enzyme functions at? And What is the optimal temperature that this enzyme functions at?

Answers

Answer:

Optimum Temperature is 35°C

Optimum PH is 7.0.

Explanation:

The optimum temp of enzymes is 20-35°c. They become inactivated at very low temperature and denatured (destroyed) at very high temp i.e. greater than 45°C. Low molecular weight enzymes are comparatively more heat stable.

The optimum pH of most enzymes is pH 7.0 (neutral pH).

Sexual harassment in the workplace is a crime when committed by anyone, regardless of position, role, or gender. Please select the best answer from the choices provided ОТ OF​

Answers

Answer:

The answer is true.

In a professional environment, sexually degrading comments and actions are legally prohibited.

The primary function of insulin in our bodies is to
O
A. store fuel for later use
B. regulate the amount of glucose in the blood
C. increase the efficiency of fuel consumption
o D. prevent digestive bacteria from consuming glucose

Answers

Answer:

B. regulate the amount of glucose in the blood

Explanation:

Insulin is a peptide hormone produced by the pancreas that lowers blood glucose levels and induces the transport of glucose within the cell

I NEED HELP ASAP PLEASE!!

Answers

Answer:

yes you're good. D its the right

The speed with which force is developed by skeletal muscles is determined by the Group of answer choices myosin ATPase isoform. Ca2 ATPase activity. sarcoplasmic calcium concentration.

Answers

Answer:

myosin ATPase isoform.

Explanation:

Skeletal muscle is also known as voluntary muscle and it can be defined as a type of muscle connected with the skeleton by tendons, so as to form a mechanical system that enables the movement of the limbs and other body parts with respect to another. Skeletal are found only in vertebrates.

Basically, the length and shortening velocity determines the amount of force a muscle would generated. When a muscle is at its ideal (resting) length, it generates the greatest amount of force while it generates the least amount of force when stretched or shortened with respect to the resting length

The speed with which force is developed by skeletal muscles is determined by the myosin ATPase isoform.

What is random fertilization?

Answers

Random fertilization refers to the fact that if two individuals mate, and each is capable of producing over 8million potential gametes, the random chance of any one sperm and egg coming together is a product of these two probabilities - some 70 trillion different combinations of chromosomes in a potential offspring

Answer:

Two individuals mate, and each is capable of producing over 8 million potential gametes. The random chance of any sperm and egg coming together is a product of these two probabilities.

Why is Robert Llewellyn referred to as a seed artist?
Type here...
Use two adjectives that describe Robert.
Type here...

Answers

Explanation:

Robert is known as a "seed artist," because his pictures involved "growing" plants and "developing" seeds...

Does someone knows this question​

Answers

The answer is b or a

Answer:

D. Viruses can have a lipid envelope derived from the host cell membrane. So they have the same phospholipids and glycoproteins (they also have specific viral proteins)

HELP URGENT!!!!!!!!!!!​

Answers

Answer:

dominant trait

Explanation:

Recessive alleles can only show up when there is no dominant allele present to suppress them.

Answer: Dominant traits

Explanation:

Recessive traits only show up when there are no dominant alleles

Extraterrestrial traits are not a thing

judging from the diagram, tropical cyclones are powered by

Answers

Answer:

Based on the diagram, tropical cyclones are powered by cold, high altitude air.

The stage in the mentrual cycle usually lasting from 3to five days when fertilization does not occur.
A.ovulation
B.stimulation
C.menustration
D.reproduction​

Answers

It should be A) ovulation

Hope this helps!
Good luck!

Clearly outline what differentiates Gram +ve bacteria from Gram -ve bacteria?​

Answers

Answer:

Gram positive bacteria have cell walls composed of thick layers of peptidoglycan. Gram positive cells stain purple when subjected to a Gram stain procedure. Gram negative bacteria have cell walls with a thin layer of peptidoglycan.

PLEASE HURRY
20 points

In one species of guinea pig, the gene for black fur is dominant while the gene for
brown fur is recessive. A male guinea pig with black fur and a female guinea pig with
black fur produce a female offspring with black fur. Which of the following BEST
describes why the trait for fur color is transferred from the parents to the offspring?
O Genetic mutations
O Acquired traits that are passed on through mitosis
O Environmental conditions such as the type of cage the owner keeps the guinea pig in
O Genes store hereditary information in the DNA of a cell, that leads to traits passing from one
generation to the next

Answers

Answer: it is D

Explanation: if you get a gene from your parents it's a gene you get it's not a mutation because if it was it would've been like a calico color but since it's just black it's D.

PLZ HELP ASAP
MARKING

Answers

the answer is A. :))
Answer you’re looking for is A

Select the term that best fits the following definition: Tells what elements
a compound contains and the number of those atoms *
O Covalent Bond
O lonic Bond
O Compound
O Chemical Formula

Answers

I think it is chemical formula

PLEASE HELP ME WITH SOME QUESTIONS


1. What is a convection current?

2. How do thermometers work?

Answers

Answer:

1.a current in a fluid that results from convection.

2.measures temperature through a glass tube sealed with mercury that expands or contracts as the temperature rises or falls.

Explanation:

Answer:

1.A convection current is a process that involves the movement of energy from one place to another. It is also called convection heat transfer. What is the reason that makes you feel hotter when placing hands above a campfire or when sitting next to it? Or, why is the movement of liquid so rapid when water is boiled in a pot? These things happen as a result of the Convection Currents.

Explanation:

2. A thermometer measures temperature through a glass tube sealed with mercury that expands or contracts as the temperature rises or falls. ... As temperatures rise, the mercury-filled bulb expands into the capillary tube. Its rate of expansion is calibrated on the glass scale.

What are features of an ocean marine ecosystem?






ps. ANSWER THIS IMMEDIATLY NOW!!! thankyou

Answers

Answer:

Marine ecosystems are characterized by factors such as availability of light, food and nutrients. Other factors that affect marine ecosystems include water temperature, depth and salinity, as well as local topography. Changes in these conditions can change the composition of species that make up the marine community.

which is true of the gallbladder?

- it creates white blood cells
- it stores bile
- it stores pancreatic amylase
- it stores pepsin

Answers

Answer:

It stores bile is the true of the gallbladder.

3 This is the menstrual phase wherein pregnancy is possible.
c) menstrual phase
d) ovulation phase
a) Tollicular phase
b) luteal phase
wires a woman for pregnancy.​

Answers

Answer:

ovulation phase

Explanation:

The ovulation phase is the only time during your menstrual cycle when you can get pregnant. You can tell that you're ovulating by symptoms like these: a slight rise in basal body temperature

d) ovulation phase

Its called ovulation due to the egg leaving to ovary to then be fertilized by a sperm. Although it is possible for a woman to get pregnant during anytime in her cycle. I hope this helped a bit.

Question
of 20
If a cytosine replaces a guanine in a strand of DNA, this is known as what type of mutation?

Substitution mutation

Deletion mutation

Insertion mutation

Corruption mutation

Answers

Answer:

substitution

Explanation:

c replaces g. does not cause a frameshift mutation so it is not insertion or deletion, and i have no clue what corruption is when there is the word "replace" it is probably substitution.

Answer:

Substitution mutation

Explanation:

Mutation refers to a change in the genetic sequence of an organism. Mutation can be of different types depending on how it occurs. A type of mutation called SUBSTITUTION MUTATION involves the replacement of a nucleotide base by another in a gene.

For example, as stated in this question, when a cytosine (C) replaces a guanine (G) in a strand of DNA, it is called SUBSTITUTION MUTATION because guanine base replaces cytosine base in the sequence.

A hot air balloon
Uses_____
as
a method of heat
transfer

Answers

Answer:

Explanation:

free convection

This transfer of heat energy away from the ground by the vertical movement of air is called "free convection" or "natural convection." A hot air balloon rises because warmer air is less dense than cool air.

This equipment can be used for plowing ,planting,cultivating,mowing soil and pulling farm machinery,what is it?​

Answers

Is the moldboard plow

But if the male Himalayan rabbit's genotype is c(h)c, and it mates with an albino female whose genotype is cc isn't there a 25% chance that the offspring could be albino? and why can't you breed two Himalayan's together to get a Himalayan?

Answers

Answer: Go-ogle

Explanation: Is helpful

A piece of alien DNA cannot multiply itself in the progeny cells of the organism because:

a. It has no the sequence called Origin of replication (ori) needed for starting replication.

b. A piece of DNA will be denatured and damaged soon as it has no stability.

c. A piece of DNA is easily unwound and the H bonds between nitrogen bases are broken.

d. Both A & B.​

Answers

I think the answer is A . It has no the

Which one 1,2,3,4…………………

Answers

Answer:

3

Explanation:

brain

hope this helps!!!

Answer:

3

Explanation:

fertilization of an egg to form a zygote takes place in?

A.urethra
B.uterus
C.cervix
D.fallopain tube​

Answers

Answer is: D (fallopian tube)

Which statement best describes how the carbon cycle and oxygen cycle are interrelated?
Group of answer choices

Plants release water during transpiration and carbon dioxide during photosynthesis

Plants use carbon dioxide and release oxygen during photosynthesis

Animals release water during respiration and carbon dioxide during transpiration

Animals use carbon dioxide and release oxygen during respiration

Answers

Plants use carbon dioxide and release oxygen during photosynthesis

Which of the following statements about cell respiration is true?
A In the electron transport chain, Oz is converted to CO2.
B Glycolysis splits sugar to produce pyruvate and FADH2-
C Electrons leave the electron transport chain in a molecule of water (H20).
D
Both B and C are correct.

Answers

The statement which is true about cell respiration is; Choice B: Glycolysis splits sugar to produce pyruvate and FADH2-

Definition of terms:

Cellular respiration is a process used by all living organisms to convert glucose into energy.

Cellular respiration is a collection of three unique metabolic pathways: glycolysis, pyruvate oxidation, the citric acid cycle, and the electron transport chain.

Glycolysis; This pathway is anaerobic and takes place in the cytoplasm of the cell.

This pathway breaks down 1 glucose molecule and produces 2 pyruvate molecule. A process which releases FADH2- in the process.

Pyruvate Oxidation: In eukaryotic cells, the mitochondria is the site of pyruvate oxidation. The release of CO2 is a characteristic of this step.

The Electron transport chain: The electron transport chain is the final component of aerobic respiration and is the only portion of glucose metabolism that uses atmospheric oxygen.

Electrons are rapidly transferred from one component to the next to the endpoint of the chain, where the electrons reduce molecular oxygen, O2 producing water in the process.

Read more;

https://brainly.com/question/18354231

help! If a virus has an incubation period of 12-24 months, then it is most likely --

Answers

my best guess would be LTBI (latent tuberculosis infection)

most incubation periods are in the range of 3 weeks to 3 months, though some cancer viruses have incubation periods of 10 years long. exc..

tuberculosis: 6-24 months

aids: 1-15 years

leukemia: 2–12 years

good luck!

Not sure if this is what you meant, but this is what I understoodit on what you said. Based on existing literature, the incubation period (the time from exposure to development of symptoms) of SARS-CoV-2 and other coronaviruses (e.g. MERS-CoV, SARS-CoV) ranges from 2–14 days.
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