EASY
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Respiration is an

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Important Questions on Plant Physiology: Respiration

HARD

Which ONE of the following statements is INCORRECT about the hexokinase-catalysed reaction given below?

Glucose + ATP Glucose-6-phosphate+ADP

EASY

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). 

Assertion (A): ATP is used at two steps in glycolysis.

Reason (R): First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in conversion of Fructose-6-phosphate to Fructose-1,6-diphosphate.

In the light of the above statements, choose the correct answer from the options given below:

HARD

Arrange the following in the order of their occurrence in the glycolytic pathway.

I. Triose bisphosphate Triose phosphate

II. Fructose-6-phosphate  Fructose 1,6-bisphosphate

III. Phosphoenolpyruvate  Pyruvic acid

IV. 2-Phosphoglycerate Phosphoenolpyruvate

V. Glucose-6-phosphate Fructose-6-phosphate

VI. Triose phosphate 2-Phosphoglycerate

The correct sequence is:

EASY
What is the net gain of ATP when each molecule of glucose is converted to two molecules of pyruvic acid?
EASY
Which of the following conversions in glycolysis is an example of substrate level phosphorylation?
MEDIUM

Respective products released along with main product in biochemical reactions catalysed by given enzymes

A) Glutamine synthetase                      I) NADH + H​​​​​​+

B) Fructose 1,6-bisphosphatase        II) ADP + Pi

C) Hexokinase                                      III) Inorganic phosphate

D) Malate dehydrogenase                   IV) ADP

EASY
Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by:
MEDIUM
Germinating seeds help to study the rate of respiration as they
MEDIUM
The following is a simplified scheme showing the fate of glucose during aerobic and anaerobic respiration. Identify the end products that are formed at stages indicated as A, B, C and D. Identify the correct option from these given below.

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MEDIUM
A plant is believed to releasing oxygen during nighttime. Do you believe in the truthfulness of this statement? Justify your answer by giving the reason.
EASY
In the process of respiration, the potential energy stored in the organic compounds is released in the form of