Respiration in Plants · Biology · NEET

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MCQ (Single Correct Answer)

1

$$ 2\left(\mathrm{C}_{51} \mathrm{H}_{98} \mathrm{C}_6\right)+145 \mathrm{O}_2 \rightarrow 102 \mathrm{CO}_2+98 \mathrm{H}_2 \mathrm{O}+\text { energy } $$

The Respiratory Quotient (RQ) of a biomolecule used for respiration, as per the above equation would be :

NEET 2026
2

$$ \text { Match List-I with List-II: } $$

$$
\text { List-I (Process) }
$$
$$
\text { List-II (Location) }
$$
A. Glycolysis I. Inner mitochondrial membrane
B. ETS II. Mitochondrial matrix
C. Accumulation of protons III. Cytoplasm
D. Krebs' cycle IV. Intermembrane space
Choose the correct answer from the options given below:
NEET 2026
3

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

NEET 2025
4

Match List-I with List-II:

List - I List - II
(A) ETS Complex I (I) NADH Dehydrogenase
(B) ETS Complex II (II) Cytochrome bC$$_1$$
(C) ETS Complex III (III) Cytochrome C oxidase
(D) ETS Complex IV (IV) Succinate Dehydrogenase

Choose the correct answer from the options given below :

NEET 2024 (Re-Examination)
5

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 cellular respiration takes place in Mitochondria.

C. Fermentation takes place under anaerobic condition in germinating seeds.

D. The fate of pyruvate formed during glycolysis depends on the type of organism also.

E. Water is formed during respiration as a result of O$$_2$$ accepting electrons and getting reduced.

Choose the correct answer from the options given below :

NEET 2024 (Re-Examination)
6

Match List I with List II

List - I List - II
A. Citric acid cycle I. Cytoplasm
B. Glycolysis II. Mitochondrial matrix
C. Electron transport system III. Intermembrane space of mitochondria
D. Proton gradient IV. Inner mitochondrial membrane

Choose the correct answer from the options given below:

NEET 2024
7

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

NEET 2024
8

How many times decarboxylation occurs during each TCA cycle?

NEET 2023 Manipur
9

Fatty acids are connected with the respiratory pathway through :

NEET 2023 Manipur
10

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 :

NEET 2023
11

Which of the following combinations is required for chemiosmosis?

NEET 2023
12

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 transport system
(D) Tricarboxylic acid cycle (IV) EMP pathway

Choose the correct answer from the options given below :

NEET 2023
13

Melonate inhibits the growth of pathogenic bacteria by inhibiting the activity of

NEET 2023
14

The 5-C compound formed during TCA cycle is

NEET 2022 Phase 2
15

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

NEET 2022 Phase 2
16

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

NEET 2022 Phase 1
17

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

NEET 2022 Phase 1
18
Which of the following statements is incorrect?
NEET 2021
19
The number of substrate level phosphorylations in one turn of citric acid cycle is
NEET 2020 Phase 1
20
Conversion of glucose to glucose-6 phosphate, the first irreversible reaction of glycolysis, is catalyzed by
NEET 2019
21
Respiratory Quotient (RQ) value of tripalmitin is :
NEET 2019
22
What is the role of NAD+ in cellular respiration?
NEET 2018
23
Which of these statements is incorrect?
NEET 2018
24
Which statement is wrong for Krebs' cycle?
NEET 2017
25
Oxidative phosphorylation is
NEET 2016 Phase 2
26
Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins?
NEET 2016 Phase 2
27
Cytochromes are found in
AIPMT 2015 Cancelled Paper
28
In which one of the following processes CO2 is not released?
AIPMT 2014
29
The three boxes in this diagram represent the three major biosynthetic pathway in aerobic respiration. Arrows represent net reactants or products.

NEET 2013 Biology - Respiration in Plants Question 24 English
Arrows numbered 4, 8 and 12 can all be
NEET 2013
30
Which of the metabolites is common to respiration-mediated breakdown of fats, carbohydrates and proteins?
NEET 2013
31
In mitochondria, protons accumulate in the
AIPMT 2011 Mains
32
The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called
AIPMT 2010 Prelims
33
Aerobic respiratory pathway is appropriately termed
AIPMT 2009
34
The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called
AIPMT 2008
35
The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because
AIPMT 2008
36
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 enzyme is
AIPMT 2007
37
The overall goal of glycolysis, Krebs' cycle and the electron transport system is the formation of
AIPMT 2007
38
How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO2 and H2O yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal?
AIPMT 2006
39
During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP?
AIPMT 2005
40
In glycolysis, during oxidation electrons are removed by
AIPMT 2004
41
In which one of the following do the two names refer to one and same thing?
AIPMT 2003
42
In alcohol fermentation
AIPMT 2003
43
Organisms which obtain energy by the oxidation of reduced inorganic compounds are called
AIPMT 2002
44
How many ATP molecules are produced by aerobic oxidation of one molecule of glucose?
AIPMT 2002
45
Cytochrome is
AIPMT 2001