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atroni [7]
1 year ago
10

Which is not the precursor for the de novo purine biosynthesis?

Biology
1 answer:
amm18121 year ago
7 0

The correct option is (B) Lysine.

The precursors glutamine (N2 and N9), glycine (C4, C5, and N7), aspartate (N1), co2 (C6), and folate are used to create the purine ring (C2 and C8). All are precursors to the purine ring, with the exception of lysine.

How is Purine synthesized de novo?

  • In all cells, the cytosol is where purine biosynthesis takes place.
  • There are 11 steps that are catalyzed by enzymes that build the purine ring. Each enzyme includes several monomers because it is oligomeric.
  • The reaction does not release the intermediate products that are created. They are instead transported to the next enzyme in the process.
  • The biosynthesis process in the human body can provide the body's need for purine in metabolic processes. Clinical symptoms might become unpleasant if purine synthesis is inadequate or if biosynthetic routes are aberrant.

Learn more about the Purine biosynthesis with the help of the given link:

brainly.com/question/14229639

#SPJ4

I understand that the question you are looking for is "Which of the following is not the precursor of a purine ring?

(A) Glutamine

(B) Lysine

(C) Glycine

(D) Aspartate"

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The correct answer is option b, that is, the addition of carbon dioxide to the atmosphere.  

If the concentration of carbon dioxide upsurges in the atmosphere due to the enhanced rate of outgassing, there will be a constant elevation in the global temperature. The elevating temperature and more dissolved carbon dioxide will result in enhanced weathering of crystal rocks as a consequence of faster rate of reactions and greater acidity.  


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3 years ago
a class contains 8 men and 12 women. which fraction represents the ratio of women to all the students in the class?
Licemer1 [7]
12/20 is the answer I think. I hope this helps you!!
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A scientist is using a species of green algae to study the electron transport chain in photosynthesis. He uses a laser to inacti
jeka94

Answer:

D) In case 1, both PS I and PS II completely lose function; in case 2, a proton gradient is still produced.

Explanation:

The light dependent reaction of photosynthesis, which produces the ATP and NADPH needed in the light independent stage of the process, includes complexes of proteins and pigments called PHOTOSYSTEMS. These photosystems (I and II) are key to the functionality of the light dependent reactions in the thylakoid.

The major pigment present in both photosystems is CHLOROPHYLL A, which absorbs light energy and transfers electrons to the reaction center. Chlorophyll B is only an accessory pigment meaning it can be done without. Hence, if all of the chlorophyll A is inactivated in the algae but leaves chlorophyll B intact as in case 1, both PS I and PS II will lose their function because Chlorophyll A is the major pigment that absorbs light energy in both photosystems.

In case 2, if PS I is inhibited and PS II is unaffected, a PROTON GRADIENT WILL STILL BE PRODUCED because the splitting of water into protons (H+) and electrons (e-) occurs in PSII. Hence, H+ ions can still be pumped into the inner membrane of the thylakoid in order to build a proton gradient even without the occurrence of PS I.

3 0
3 years ago
Which acid is used to produce chloride salt
Nata [24]

Answer:

Different acids make different salts.

Explanation:

a hydrochloric acid

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Proteins of smaller molecular size may be reabsorbed from the glomerular filtrate by the specific transport process of _________
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Proteins of smaller molecular size may be reabsorbed from the glomerular filtrate by the specific transport process of endocytosis.

<h3>What do you mean by Glomerular filtrate?</h3>

The Glomerular filtrate may be defined as the liquid in the lumen of the Bowman's capsule of the nephron that has been purified from the capillaries of the glomerulus.  

The small molecular size proteins may be absorbed from the glomerular filtrate by receptor-mediated endocytosis. Then moved into the endosomes, and finally to the lysosomes for the degradation.

Therefore, proteins of smaller molecular size may be reabsorbed from the glomerular filtrate by the specific transport process of endocytosis.

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