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 into fructose-1-6-diphosphate.

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

NEET-2023 [Respiration-in-Plants] [class-xi ]

• A is false but R is true.
• Both A and R are true and R is the correct explanation of A
• Both A and R are true but R is NOT the correct explanation of A.
• A is true but R is false.
Correct Option: B  [ Both A and R are true and R is the correct explanation of A ]

Remark:

Math List-I with List-II

NEET-2023 [Respiration-in-Plants] [class-xi ]

• A-II, B-IV, C-III,, D-I
• A-III, B-IV, C-II,, D-I
• A-II, B-IV, C-I,, D-III
• A-III, B-I, C-II,, D-IV
Correct Option: A  [ A-II, B-IV, C-III,, D-I ]

Remark:

What is the net gain of ATP when each molecule of glucose is converted to two molecules of pyruvic acid?

NEET-2022 [Respiration-in-Plants] [class-xi ]

• Four
• Six
• Two
• Eight
Correct Option: C  [ Two ]

Remark:

What amount of energy is released from glucose during lactic acid fermentation?

NEET-2022 [Respiration-in-Plants] [class-xi ]

• Approximately 15%
• More than 18%
• About 10%
• Less than 7%
Correct Option: D  [ Less than 7% ]

Remark:

What is the role of large bundle sheath cells found around the vascular bundles in C₄ plants?

NEET-2022 [Respiration-in-Plants] [class-xi ]

• To provide the site for photorespiratory pathway
• To increase the number of chloroplast for the operation of Calvin cycle
• To enable the plant to tolerate high temperature
• To protect the vascular tissue from high light intensity
Correct Option: B  [ To increase the number of chloroplast for the operation of Calvin cycle ]

Remark:

Which of the following statements is incorrect?

NEET-2021 [Respiration-in-Plants] [class-xi ]

• During aerobic respiration, role of oxygen is limited to the terminal stage.
• In ETC (Electron Transport Chain), one molecule of NADH + H⁺ gives rise to 2 ATP molecules, and one FADH₂ gives rise to 3 ATP molecules.
• ATP is synthesized through complex V.
• Oxidation-reduction reactions produce proton gradient in respiration.
Correct Option: B  [ In ETC (Electron Transport Chain), one molecule of NADH + H⁺ gives rise to 2 ATP molecules, and one FADH₂ gives rise to 3 ATP molecules. ]

Remark:

Pyruvate dehydrogenase activity during aerobic respiration requires:

NEET-(Oct)2020 [Respiration-in-Plants] [class-xi ]

• Calcium
• Iron
• Cobalt
• Magnesium
Correct Option: D  [ Magnesium ]

Remark:

The number of substrate level phosphorylations in one turn of citric acid cycle is:

NEET-(Sept)2020 [Respiration-in-Plants] [class-xi ]

• Zero
• One
• Two
• Three
Correct Option: B  [ One ]

Remark:

Respiratiory Quotient (RQ) value of tripalmitin is:

NEET-2019 [Respiration-in-Plants] [class-xi ]

• 0.9
• 0.07
• 0.7
• 0.09
Correct Option: C  [ 0.7 ]

Remark:

Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by:

NEET-2019 [Respiration-in-Plants] [class-xi ]

• Hexokinase
• Aldolase
• Enolase
• Phosphofructokinase
Correct Option: A  [ Hexokinase ]

Remark: