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Respiration in Plants — NEET UG Botany PYQs

625 previous year questions from Respiration in Plants with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

625 questionsBotanySolutions on every page
1

How many molecules of pyruvic acid are produced at the end of glycolysis from 206 molecules of glucose ?

NEET 2026 Solution View → 2

2 ( C ₅₁ H ₉₈ C ₆) + 145 O ₂ 102 CO ₂ + 98 H ₂ O + energy The Respiratory Quotient (RQ) of a biomolecule, used for respiration, as per the above equation would be :

NEET 2026 Solution View → 3

Match List I with List II : List I (Process) List II (Location) A. Glycolysis I. Inner mitochondrial membrane B. ETS II. Mitochondrial matrix C. Accumulation of protons III. Cytopl

NEET 2026 Solution View → 4

The complex II of mitochondrial electron transport chain is also known as

NEET 2025 Solution View → 5

Identify the step in tricarboxylic acid cycle, which does not involve oxidation of substrate.

NEET 2024 Solution View → 6

Match List-I with List-II : array llll List-I & & List-II . & ETS Complex I & I. & NADH Dehydrogenase . & ETS Complex II & II. & Cytochrome bC ₁ . & ETS Complex III & III. & Cytoch

NEET 2024 Solution View → 7

Match List I with List II array |l|l|c|l| & List I & & List II A. & Citric acid cycle & I. & Cytoplasm B. & Glycolysis & II. & Mitochondrial matrix C. & Electron transport system &

NEET 2024 Solution View → 8

Which of the following are correct about cellular respiration? A. Cellular respiration is the breaking of C - C bonds of complex organic molecules by oxidation. B. The entire cellu

NEET 2024 Solution View → 9

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 A

NEET 2023 Solution View → 10

Fatty acids are connected with the respiratory pathway through:

NEET 2023 Solution View → 11

Match List I with List II: List I List II A. Oxidative decarboxylation I. Citrate synthase B. Glycolysis II. Pyruvate dehydrogenase C. Oxidative phosphorylation III. Electron trans

NEET 2023 Solution View → 12

The number of time(s) decarboxylation of isocitrate occurs during single TCA cycle is :

NEET 2022 Solution View → 13

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

NEET 2022 Solution View → 14

The 5-C compound formed during TCA cycle is :

NEET 2022 Solution View → 15

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

NEET 2022 Solution View → 16

Which of the following statements is incorrect?

NEET 2021 Solution View → 17

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

NEET 2020 Solution View → 18

Pyruvate dehydrogenase activity during aerobic respiration requires:-

NEET 2020 Solution View → 19

ATP formation occurs through which of the following processes?

AIIMS 2019 Solution View → 20

Respiratory Quotient (RQ) value of tripalmitin is

NEET 2019 Solution View → 21

Where is respiratory Electron Transport System (ETS) located in plants?

NEET 2019 Solution View → 22

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

NEET 2019 Solution View → 23

What is the RQ of glucose?

JIPMER 2018 Solution View → 24

RQ of malic acid is

JIPMER 2018 Solution View → 25

How many molecules of pyruvic acid are formed in glycolysis?

JIPMER 2018 Solution View → 26

What is the role of N A D + in cellular respiration?

NEET 2018 Solution View → 27

Which of these statements is incorrect?

NEET 2018 Solution View → 28

Match the following columns array |l|l| Column I & Column II A. Molecular oxygen & 1. - ketoglutaric acid B. Electron acceptor & 2. Hydrogen acceptor C. Pyruvate dehydrogenase & 3.

JIPMER 2017 Solution View → 29

Which statement is wrong for Krebs' cycle?

NEET 2017 Solution View → 30

Common phase in aerobic and anaerobic respiration is

JIPMER 2016 Solution View → 31

Which of the following biomolecules is common to respiration mediated breakdown of fats, carbohydrates, and proteins?

NEET 2016 Solution View → 32

Oxidative phosphorylation is

NEET 2016 Solution View → 33

Cytochromes are found in:

NEET 2015 Solution View → 34

The net requirement of assimilatory power for the formation of 6 hexose molecules in maize plant is

JIPMER 2014 Solution View → 35

The respiratory quotient during cellular respiration would depend on the

JIPMER 2014 Solution View → 36

In which one of the following processes CO 2 is not released?

NEET 2014 Solution View → 37

Select the option which is not correct with respect to enzyme action:

NEET 2014 Solution View → 38

Which one of the following is not a parasitic adaptation?

NEET 2013 Solution View → 39

The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products Arrows numbered 4,8 and 12 can al

NEET 2013 Solution View → 40

Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins?

NEET 2013 Solution View → 41

Phase common in aerobic and anaerobic respiration is

JIPMER 2012 Solution View → 42

Decarboxylation is involved in

JIPMER 2010 Solution View → 43

PGA as the first CO ₂ fixation product was discovered in photosynthesis of

NEET 2010 Solution View → 44

Study the pathway given below In which of the following options, correct words for all the three blanks A, B and C are indicated?

NEET 2010 Solution View → 45

The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called

NEET 2010 Solution View → 46

Aerobic respiratory pathway is appropriately termed

NEET 2009 Solution View → 47

Cyclic-photophosphorylation results in the formation of

NEET 2009 Solution View → 48

Aerobic respiratory pathway is appropriately termed :-

NEET 2009 Solution View → 49

Cyclic photophosphorylation results in the formation of :

NEET 2009 Solution View → 50

The energy-releasing process in which the substrate is oxidized without an external electron acceptor is called

NEET 2008 Solution View → 51

The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that Adenosine Triphosphate (ATP) is formed because

NEET 2008 Solution View → 52

The energy releasing process in which the substrate is oxidised without an external electron acceptor is called

NEET 2008 Solution View → 53

During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP?

JIPMER 2007 Solution View → 54

All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzy

NEET 2007 Solution View → 55

The overall goal of glycolysis, Krebs cycle and the electron transport system is the formation of:

NEET 2007 Solution View → 56

The incomplete breakdown of sugars in anaerobic respiration results in the formation of :

JIPMER 2006 Solution View → 57

During anaerobic conditions, the rate of glycolysis increases, is called :

JIPMER 2006 Solution View → 58

How many ATP are formed by oxidation of one glucose molecule in liver cells ?

JIPMER 2006 Solution View → 59

How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO ₂ and H ₂ O yields 686 kcal and the useful

NEET 2006 Solution View → 60

In which part of mitochondria does ATP synthesis occur?

JIPMER 2005 Solution View → 61

Fat, prior to its oxidation associate with

JIPMER 2005 Solution View → 62

The net gain ATP from complete oxidation of 1 molecule of glucose in eukaryote is

JIPMER 2005 Solution View → 63

R.Q. is always less than one in

JIPMER 2005 Solution View → 64

Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on:

NEET 2005 Solution View → 65

During which stage in the complete oxidation of glucose arc the greatest number of ATP molecules formed from ADP?

NEET 2005 Solution View → 66

Glycolysis occurs in

JIPMER 2004 Solution View → 67

The terminal electron acceptor during electron transport system is

JIPMER 2004 Solution View → 68

Dough kept overnight in warm weather becomes son and spongy because of

NEET 2004 Solution View → 69

In glycolysis, during oxidation electrons are removed by:

NEET 2004 Solution View → 70

ATPase enzyme needed for muscle contraction is located in:

NEET 2004 Solution View → 71

During anaerobic digestion of organic waste, such as in producing biogas, which one of the following is left undegraded ?

NEET 2003 Solution View → 72

Which one of the following is wrong in relation to photorespiration?

NEET 2003 Solution View → 73

In which one of the following do the two names refer to one and the same thing ?

NEET 2003 Solution View → 74

In alcohol fermentation:

NEET 2003 Solution View → 75

How many ATP molecules are produced by aerobic oxidation of one molecule of glucose?

NEET 2002 Solution View → 76

What is the source of energy for life processes?

NEET Solution View → 77

Which organisms can prepare their own food?

NEET Solution View → 78

Why must food be translocated to all non-green parts of green plants?

NEET Solution View → 79

What type of organisms depend on dead and decaying matter for food?

NEET Solution View → 80

where does all the food respired for life processes come from?

NEET Solution View → 81

What is cellular respiration?

NEET Solution View → 82

What is the process of breaking C-C bonds of complex compounds through oxidation within the cells called?

NEET Solution View → 83

What are the compounds that are oxidized during respiration known as?

NEET Solution View → 84

Which macromolecule is usually oxidized to release energy during respiration?

NEET Solution View → 85

What is the energy released during oxidation in respiration used to synthesize?

NEET Solution View → 86

How is the energy released during oxidation within a cell?

NEET Solution View → 87

What role does ATP play in the cell?

NEET Solution View → 88

Where does the breakdown of complex molecules to yield energy take place in eukaryotes?

NEET Solution View → 89

plants require O₂ for respiration?

NEET Solution View → 90

What structures do plants use for gaseous exchange?

NEET Solution View → 91

Why do plants not need specialized organs for gas exchange?

NEET Solution View → 92

How do the rates of Respiration in Plants compare to those in animals?

NEET Solution View → 93

When are large volumes of gases exchanged in plants?

NEET Solution View → 94

What are the openings in the bark of stems called?

NEET Solution View → 95

What is the primary function of the cells in the interior of thick, woody stems?

NEET Solution View → 96

What are the end products of the complete combustion of glucose?

NEET Solution View → 97

What is most of the energy given out as during the complete combustion of glucose?

NEET Solution View → 98

In thick, woody stems and roots, where are the living cells organized?

NEET Solution View → 99

What strategy does the plant cell use to make the energy from glucose useful?

NEET Solution View → 100

What does the energy released in small steps allow the cell to do?

NEET Solution View → 101

What happens to the energy that is not used for ATP synthesis during glucose catabolism?

NEET Solution View → 102

What should the cell be able to do with the energy released from glucose?

NEET Solution View → 103

What is the process of breaking down glucose in several steps to release energy called?

NEET Solution View → 104

What are the products released during respiration?

NEET Solution View → 105

What is the term for organisms that can live without oxygen?

NEET Solution View → 106

What are facultative anaerobes?

NEET Solution View → 107

What are obligate anaerobes?

NEET Solution View → 108

What is the breakdown of glucose to pyruvic acid called?

NEET Solution View → 109

Who gave the scheme of glycolysis?

NEET Solution View → 110

Where does glycolysis occur in the cell?

NEET Solution View → 111

In which type of organisms is glycolysis the only process in respiration?

NEET Solution View → 112

Is glycolysis present in all living organisms?

NEET Solution View → 113

What are the end products of glycolysis?

NEET Solution View → 114

What happens to glucose and fructose after they are formed from sucrose?

NEET Solution View → 115

What enzyme phosphorylates glucose and fructose?

NEET Solution View → 116

What is the product when glucose is phosphorylated by hexokinase?

NEET Solution View → 117

How many reactions are in the glycolysis pathway?

NEET Solution View → 118

What is glucose-6-phosphate isomerized to produce?

NEET Solution View → 119

What is the end product of glycolysis?

NEET Solution View → 120

What enzyme converts sucrose into glucose and fructose?

NEET Solution View →
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