Respiration in Plants Class 11 NEET Questions. We covered all the Respiration in Plants Class 11 NEET Questions in this post for free so that you can practice well for the exam.
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MCQ on Respiration in Plants for NEET Students
Which of the following is true when RQ is 1?
(A) Substrate is glucose and respiration is by yeast
(B) Substrate is glucose and respiration is aerobic
(C) Substrate is fats and respiration is anaerobic
(D) Substrate is fats or glucose and respiration is anaerobic
Option b – Substrate is glucose and respiration is aerobic
Which of the following does NOT occur during the conversion of glucose to two molecules of pyruvate?
(A) Utilization and formation of ATP
(B) Phosphorylation of hexose sugar
(C) Release of CO2
(D) Reduction of NAD*
Option c – Release of CO2
Which of the following is an amphibolic pathway?
(A) Krebs’ cycle
(B) Electron Transport System
(C) Calvin cycle
(D) EMP pathway
Option a – Krebs’ cycle
In which of the following cases maximum energy in the cell is liberated?
(A) When pyruvic acid is converted into acetyl CoA
(B) When glucose is converted into pyruvic acid
(C) When glucose is converted into lactic acid
(D) When pyruvic acid is converted into CO₂ and H₂O
Option d – When pyruvic acid is converted into CO₂ and H₂O
The number of oxygen molecules required for the formation of alcohol from one molecule of glucose is
(A) two
(B) six
(C) zero
(D) four
Option c – zero
The number of glucose molecules required for the formation of 26 pyruvic acid molecules at the end of glycolysis is
(A) 26
(B) 52
(C) 13
(D) 32
Option c – 13
Select the INCORRECT statement from the following with respect to ATP synthase.
(A) Complex V in ETS refers to ATP synthase.
(B) F₁ headpiece of ATP synthase is a peripheral membrane protein complex.
(C) Fo is an integral membrane protein complex.
(D) F₁ of ATP synthase forms a proton channel.
Option d – F₁ of ATP synthase forms a proton channel.
Which of the following is NOT a significance of ETS?
(A) A major amount of energy is generated through ETS.
(B) ETS utilizes water molecules formed during the Krebs cycle.
(C) Per glucose molecule 38 ATP molecules are formed, out of which 34 ATP molecules are produced through ETS.
(D) Oxidized coenzymes such as NAD and FAD are regenerated from their reduced forms (NADH₂ and FADH₂) for recycling.
Option b – ETS utilizes water molecules formed during the Krebs cycle.
Conversion of Pyruvic acid to Acetyl CoA requires all the given below, except
(A) NAD+
(B) Coenzyme A
(C) Pyruvic acid decarboxylase
(D) Pyruvate dehydrogenase
Option c – Pyruvic acid decarboxylase
Which of the following respiratory product is used first in respiration?
(A) Fats
(B) Proteins
(C) Carbohydrates
(D) Lactic acid
Option c – Carbohydrates
Pyruvic acid + 4NAD + FAD + 2H₂O + ADP + Pi→ 3CO₂ + 4NADH + 4H+ FADH₂ + ATP Which of the following statement is wrong with respect to the given reaction?
(A) The given reaction occurs in the cytoplasm.
(B) The given reaction represents the Citric acid cycle.
(C) The given reaction occurs in the mitochondrial matrix.
(D) It represents aerobic respiration.
Option a – The given reaction occurs in the cytoplasm.
The metabolic fate of pyruvic acid is under control by the availability of
(A) glucose
(B) pyruvic acid
(C) carbon dioxide
(D) free molecular oxygen
Option d – free molecular oxygen
Which of the following compounds directly or indirectly forms pyruvic acid in respiration? i. Dihydroxy acetone phosphate ii. Glucose-6-phosphate iii. Fatty acids iv. Amino acids
(A) i, iii, iv
(B) ii, iii, iv
(C) i, ii, iii
(D) i, ii, iv
Option d – i, ii, iv
Complete the given analogy with respect to complexes of the electron transport system. Complex II : FADH₂ :: Complex I : ………
(A) ATP synthase
(B) Cytochrome c oxidase
(C) Cytochrome bc₁
(D) NADH dehydrogenase
Option d – NADH dehydrogenase
Read the given statements and select the correct option. I. The formation of ATP by the transfer of phosphate group from a substrate to ADP is known as oxidative phosphorylation. II. Oxidative phosphorylation is formation the of ATP by energy released from electrons removed during substrate oxidation. The correct definition of Oxidative phosphorylation is given by
(A) Statement I
(B) Statement II
(C) Both statements I and II
(D) Neither statement I nor statement II
Option b – Statement II
Select the correct pair from the following with reference to a reaction – site of occurrence – final product.
(A) Glycolysis – Cytosol- Pyruvic acid
(B) Oxidative decarboxylation Inner mitochondrial membrane – Pyruvic acid
(C) Oxidative phosphorylation Inner mitochondrial membrane Acetyl CoA+CO₂
(D) Krebs’ cycle – cytoplasm- Oxalo acetic acid + CO₂
Option a – Glycolysis – Cytosol- Pyruvic acid
Which of the following statement is true for oxidative phosphorylation?
(A) It is the production of ATP during photosynthesis.
(B) It is the production of ATP in respiration.
(C) It is the production of NADPH in photosynthesis.
(D) It is the production of pyruvic acid during glycolysis.
Option b – It is the production of ATP in respiration.
RQ for the given chemical equation is C6H12O6 + 602 → 6CO₂ + 6H₂O + Energy
(A) 0.7
(B) 0.5
(C) 0
(D) 1.0
Option d – 1.0
Select the INCORRECT statement from the following. Before entering into the respiratory pathway
(A) fats are broken down into glycerol and fatty acids.
(B) amino acids are degraded to proteins.
(C) carbohydrates are converted into simple sugars.
(D) fatty acids are converted into Acetyl CoA.
Option b – amino acids are degraded to proteins.
Before entering the Krebs’ cycle, substrates like fats, carbohydrates, and proteins get converted into a common biomolecule i.e.
(A) Pyruvic acid
(B) Acetyl CoA
(C) Fructose-6-phosphate
(D) Glucose-6-phosphate
Option b – Acetyl CoA
Which of the following is true with respect to fermentation?
(A) The end product is pyruvic acid.
(B) 2ATP are produced.
(C) 2 molecules of NADH₂ are produced per glucose molecule.
(D) NADH₂ is not formed.
Option d – NADH₂ is not formed.
Which of the following enzyme is NOT used in lactic acid fermentation? ( Respiration in Plants Class 11 NEET Questions )
(A) Pyruvic acid decarboxylase
(B) Alcohol dehydrogenase
(C) Lactate dehydrogenase
(D) Both (A) and (B)
Option d – Both (A) and (B)
Assertion: Terminal oxidation is the last step in aerobic respiration. Reason: Electron transport is an oxidative phosphorylation process.
(A) Both assertion and reason are true and the reason is the correct explanation of assertion.
(B) Both assertion and reason are true but the reason is not the correct explanation of assertion.
(C) The assertion is true but the reason is false.
(D) Both assertion and reason are false.
Option b – Both assertion and reason are true but the reason is not the correct explanation of assertion.
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