MCQs For NCERT Class 11 Biology Chapter 14 Respiration In Plants

Please refer to the MCQ Questions for Class 11 Biology Chapter 14 Respiration In Plants with Answers. The following Respiration In Plants Class 11 Biology MCQ Questions have been designed based on the latest syllabus and examination pattern for Class 11. Our experts have designed MCQ Questions for Class 11 Biology with Answers for all chapters in your NCERT Class 11 Biology book.

Respiration In Plants Class 11 MCQ Questions with Answers

See below Respiration In Plants Class 11 Biology MCQ Questions, solve the questions and compare your answers with the solutions provided below.

Question. Which one of the following is complex V of the ETS of inner mitochondrial membrane?   
(a) NADH dehydrogenase
(b) ATP synthetase
(c) Succinate dehydrogenase
(d) Ubiquinone

Question. O₂ is used by   
(a) citric acid cycle
(b) electron transport chain
(c) substrate level phosphorylation
(d) ATP synthase

Question. In mitochondria, protons accumulate in the   
(a) outer membrane
(b) inner membrane
(c) inter membrane space
(d) matrix

Question. When one molecule of ATP is disintegrated, what amount of energy is liberated?   
(a) 8 kcal
(b) 38 kcal
(c) 7 kcal
(d) 4.5 kcal

Question. The ultimate respiratory substrate, yielding maximum number of ATP molecules, is   
(a) glycogen
(b) ketogenic amino acid
(c) glucose
(d) amylose.

Question. In alcoholic fermentation   
(a) oxygen is the electron acceptor.
(b) triose phosphate is the electron donor while acetaldehyde is the electron acceptor.
(c) triose phosphate is the electron donor while pyruvic acid is the electron acceptor.
(d) there is no electron donor.

Question. Which one of the following is not included in glycolysis ?
(a) Substrate level phosphorylation occur.
(b) The end products are CO₂ and H₂O.
(c) ATP is formed.
(d) ATP is used.

Question. The common phase between aerobic and anaerobic   
respiration is called
(a) tricarboxylic acid cycle
(b) Oxidative phosphorylation
(c) Embden, Meyerhof, Parnas cycle (Glycolysis)
(d) Fermentation

Question. Conversion of phosphoglyceraldehyde to 1, 1-biphosphoglyceric acid is a
(a) primary reaction only
(b) redox reaction only
(c) primary and redox reaction
(d) substrate level phosphorylation reaction

Question. In respiration, largest amount of energy is produced in 
(a) anaerobic respiration
(b) Krebs’ cycle
(c) glycolysis
(d) none of the above

Question. Which of the following processes make direct use of oxygen?   
(a) Glycolysis
(b) Fermentation
(c) Electron transport
(d) Krebs citric acid cycle

Question. Lactic acid is formed by the process of   
(a) fermentation
(b) HMP pathway
(c) glycolysis
(d) none of these

Question. Oxidative phosphorylation refers to 
(a) anaerobic production of ATP.
(b) the citric acid cycle production of ATP.
(c) production of ATP by chemiosmosis.
(d) alcoholic fermentation.

Question. Cytochrome oxidase is a/an   
(a) exoenzyme
(b) endoenzyme
(c) proenzyme
(d) coenzyme

Question. Plants, but not animals, can convert fatty acids to sugars by a series of reactions called   
(a) photosynthesis
(b) Kreb’s cycle
(c) glycolysis
(d) glyoxylate cycle.

Question. Link between glycolysis, Krebs’ cycle and β-oxidation of fatty acid or carbohydrate and fat metabolism is 
(a) oxaloacetic acid
(b) succinic acid
(c) citric acid
(d) acetyl CoA.

Question. NADP+ is reduced to NADPH in 
(a) HMP
(b) Calvin Cycle
(c) glycolysis
(d) EMP. (1988)

Question. Respiratory Quotient (RQ) value of tripalmitin is 
(a) 0.09
(b) 0.9
(c) 0.7
(d) 0.07.

Question. Respiration is a/an 
(a) anabolic + exergonic
(b) catabolic + exergonic
(c) catabolic + endergonic
(d) anabolic + endergonic

Question. ATP is 
(a) an energy currency
(b) a nucleotide
(c) formed in both respiration and photosynthesis
(d) all of the above

Question. Cellular respiration includes the various pathways by which carbohydrates and other metabolites are broken down with the consecutive buildup of 
(a) ATP
(b) protein
(c) vitamins
(d) none of these

Question. During the process of respiration, which of the followings are released as products? 
(a) CO₂, H₂O and O₂
(b) CO₂, O₂and energy
(c) CO, H₂O and energy
(d) CO₂, H₂Oand energy

Question. Glycolysis occurs in the ________ and produces________, which in the presence of O2 enters the____________. 
(a) cytosol; pyruvate; mitochondrion
(b) cytosol; glucose; mitochondrion
(c) mitochondrion; pyruvate; chloroplast
(d) chloroplast; glucose; cytosol

Question. The enzymes, involved in the chemical reactions of glycolysis are located 
(a) in the fluid matrix of cytoplasm.
(b) in the mitochondrial matrix.
(c) in the nuclear sap.
(d) on the cristae of a mitochondria.

Question. Decarboxylation is not involved in 
(a) electron transport system
(b) glycolysis
(c) Kreb’s cycle
(d) alcoholic fermentation

Question. Conversion of phosphenol pyruvic acid to pyruvic acid and ADP to ATP are examples of   
(a) photophosphorylation.
(b) oxidative phosphorylation.
(c) photoelectric phosphorylation.
(d) substrate level phosphorylation.

Question. When oxygen is not available to a muscle cell, NADH formed during glycolysis does not pass electrons to the ETS. Instead, it passes hydrogen atoms to   
(a) acetyl CoA
(b) pyruvic acid
(c) fructose
(d) ADP

Question. Which one of the following process releases a carbon dioxide molecule?   
(a) Glycolysis
(b) Lactic acid fermentation
(c) Alcohol fermentation
(d) Hydrolysis of glycogen

Question. In the fermentation of one glucose molecule, there is a net gain of ______________ molecules of ATP. 
(a) one
(b) two
(c) six
(d) eight

Question. In an anaerobic condition, yeast cells breakdown glucose into 
(a) CO₂+ H₂O
(b) C₂H₅OH and CO₂
(c) CO₂+ lactic acid
(d) CO₂+ pyruvic acid

Question. Which of the following are not used in the conversion by pyruvate to acetyl CoA? 
(i) Oxidative dehydrogenation
(ii) Oxidative dehydration
(iii) Oxidative phosphorylation
(iv) Oxidative decarboxylation
(a) (i), (ii) and (iii)
(b) (i) and (ii)
(c) (ii) and (iv)
(d) (i) and (iii)

Question. Which one of the following reactions is an example of oxidative decarboxylation?   
(a) Conversion of succinate to fumarate.
(b) Conversion of fumarate to malate.
(c) Conversion of pyruvate to acetyl CoA.
(d) Conversion of citrate to isocitrate.

Question. Which one of the following is essential for the respiration as well as photosynthesis ? 
(a) Ubiquinone
(b) Cytochrome
(c) RuBisCO
(d) Plastocyanin

Question. In which one of the following do the two names refer to tricarboxylic acid cycle?   
(a) a-ketoglutaric acid and Krebs cycle
(b) Malic acid cycle and Kornberg cycle
(c) Citric acid cycle and Krebs cycle
(d) Oxaloacetic acid and Kornberg cycle

Question. Out of 38 ATP molecules produced per glucose, 32 ATP molecules are formed from NADH/FADH2 in   
(a) respiratory chain
(b) Krebs’ cycle
(c) oxidative decarboxylation
(d) EMP.

Question. When one glucose molecule is completely oxidised,   
it changes
(a) 36 ADP molecules into 36 ATP molecules
(b) 38 ADP molecules into 38 ATP molecules
(c) 30 ADP molecules into 30 ATP molecules
(d) 32 ADP molecules into 32 ATP molecules.

Question. Out of 36 ATP molecules produced per glucose molecule during respiration   
(a) 2 are produced outside glycolysis and 34 during respiratory chain
(b) 2 are produced outside mitochondria and 34 inside mitochondria
(c) 2 during glycolysis and 34 during Krebs’ cycle
(d) all are formed inside mitochondria.

Question. Citrate synthase, an enzyme of TCA cycle is located in 
(a) cytosol in prokaryotes.
(b) mitochondrial matrix in eukaryotes.
(c) both (a) and (b)
(d) none of the above

Question. In citric acid cycle, energy bond (GTP) is produced as a result of conversion of 
(a) citric acid to a-keto glutaric acid.
(b) succinic acid to malic acid.
(c) succinyl – CoA to succinic acid.
(d) succinic acid to succinyl – CoA.

Question. Out of 38 ATP molecules produced per glucose, 32 ATP molecules are formed from NADH/FADH2 in 
(a) respiratory chain
(b) Krebs cycle
(c) oxidative decarboxylation
(d) EMP

Question. Acceptor of acetyl Co-A in Kreb’s cycle is   
(a) malic acid
(b) fumaric acid
(c) a-keto glutaric acid
(d) oxaloacetic acid

Question. Total number of ATP consumed during Kreb’s cycle is   
(a) 0
(b) 1
(c) 2
(d) 3

Question. Electron Transport System (ETS) is present in   
(a) inner mitochondrial membrane.
(b) mitochondrial matrix.
(c) chlorophyll.
(d) chloroplast.

Question. In the electron transport system, the final acceptor of proton is   
(a) cytochrome b
(b) cytochrome a₃
(c) oxygen
(d) ubiquinone (substance A)

Question. Terminal cytochrome of respiratory chain which donates electrons to oxygen is   
(a) cyt. b
(b) cyt. c
(c) cyt.
(d) cyt. a₃

Question. A major site for synthesis of ATP from ADP and Pi is 
(a) F1 headpiece in mitochondria.
(b) F0.
(c) F1 – F0.
(d) mitochondria.

Question. The F1 headpiece is a   
(a) peripheral membrane protein complex.
(b) integral membrane protein complex.
(c) transmembrane protein.
(d) carrier protein.

Question. How many ATP molecules can be produced through oxidative phosphorylation of 2NADH2 and 3 FADH2?   
(a) 15
(b) 24
(c) 6
(d) 12

Question. The main purpose of electron transport chain is to   
(a) cycle NADH + H⁺ back to NAD⁺
(b) use the intermediates from TCA cycle
(c) breakdown pyruvate
(d) all of the above

Question. Cytochromes are concerned with
(a) Protein synthesis
(b) Cellular digestion
(c) Cell division
(d) Cell-respiration

Question. The organism in which Kreb’s cycle does not occur in mitochondria is
(a) Yeast
(b) E.coli
(c) Ulothrix
(d) Plants

Question. The catalytic efficiency of two different enzyme can be compared by the :
(a) The Km value
(b) The pH optimum value
(c) Formation of the product
(d) Molecular size of the enzyme

Question. RQ of an actively photosynthesizing tissue is
(a) 1
(b) < 1
(c) > 1
(d) Zero

Question. R.Q. is less than one at the time of respiration of –
(a) Starch
(b) Sugarcane
(c) Glucose
(d) Ground nut

Question. The first enzyme isolated in crystalline form was
(a) Catalase
(b) Urease
(c) Peroxidase
(d) Amylase

Question. The deficiencies of micronutrients, not only affects growth of plants, but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport :
(a) Cu, Mn, Fe
(b) Co, Ni, Mo
(c) Mn, Co, Ca
(d) Ca, K, Na

Question. Respiration may take place –
(a) In the presence of O₂
(b) In the absence of O₂
(c) In the presence or absence of O₂
(d) In the presence of CO₂

Question. Chemiosmotic theory of ATP synthesis in the chloroplast and mitochondria is based on :
(a) Proton gradient
(b) Accumulation of K ions
(c) Accumulation of Na ions
(d) Membrane potential

Question. Pyruvate dehydrogenase complex is used in converting –
(a) Pyruvate to glucose
(b) Glucose to pyruvate
(c) Pyruvic acid to lactic acid
(d) Pyruvate to acetyl Co-A