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Byju's Answer

Standard XII

Biology

Balance Sheet of Krebs Cycle

In which of t...

Question

In which of the following reaction of glycolysis, a molecule of water is removed from the substrate?

Frucoste-6-phosphate → Fructose 1, 6-phosphate

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3-phosphate glyceraldehyde → 1, 3-biphosphoglyceric acid

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PEP → Pyruvic acid

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2-phosphoglycerate → PEP

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Solution

The correct option is D 2-phosphoglycerate → PEP
During glycolysis, dehydration occurs in the presence of enzyme enolase and cofactor $M g^{2 +}$ . 2-phosphoglycerate loses a molecule of water and is changed into phosphoenol pyruvate (PEP).

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Similar questions

Q. Choose the steps of glycolysis where substrate level phosphorylation occurs:
(a) Glucose

\to

Glucose-6-phosphate
(b)

1, 3

-bisphosphoglyceric acid

\to

3-phosphoglyceric acid
(c)

1, 3

-bisphosphoglyceraldehyde

\to

1, 3,

-bisphosphoglyceric acid
(d) Phosphoenolpyruvate

\to

Pyruvate
(e) Fructose-6-phosphate

\to

Fructose-

1, 6

-bisphosphate

Question 14
When $C O_{2}$ is added to PEP, the first stable product synthesised is
(a) pyruvate (b) glyceraldehyde-3-phosphate
(c) phosphoglycerate (d) oxaloacetate

	List I		List II
A	Hexokinase	1	Conversion of fructose-6-phosphate to fructose-1-6-diphosphate
B	Triose phosphate dehydrogenase	2	Conversion of glucose to glucose-6-phospahte
C	Phosphoglyceromutase	3	Conversion of 1, 3-diphosphoglyceraldehyde to 1, 3-diphosphoglyceric acid
D	Phosphofructokinase	4	Conversion of 3-phosphoglyceric acid to 2-phosphoglyceric acid

Match the above lists and choose the correct option.

Q. Select the correct order of reactions in glycolysis.
I. Conversion of 3 phosphoglyceraldehyde to 1, 3 bisphosphoglycerate.
II. Conversion of 3 phosphoglyceric acid to 2 phosphoglycerate.
III. Conversion of 1, 3-BPGA to 3 phosphoglyceric acid.
IV. Splitting of fructose 1, 6-bisphosphate into dihydroxy acetone phosphate and 3 phosphoglyceraldehyde.

Q. The immediate products of

C_{3} a n d C_{4}

cycle respectively are

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In which of the following reaction of glycolysis, a molecule of water is removed from the substrate?

The correct option is D 2-phosphoglycerate → PEPDuring glycolysis, dehydration occurs in the presence of enzyme enolase and cofactor Mg2+ . 2-phosphoglycerate loses a molecule of water and is changed into phosphoenol pyruvate (PEP).

The correct option is D 2-phosphoglycerate → PEP
During glycolysis, dehydration occurs in the presence of enzyme enolase and cofactor $M g^{2 +}$ . 2-phosphoglycerate loses a molecule of water and is changed into phosphoenol pyruvate (PEP).