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160+ Respiration Solved MCQs

in Biology

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: All India Pre Medical Test (AIPMT) .

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Chapter: Respiration

1.	Respiration is (Grujarat GET Q.B.)
A.	Anabolic proces
B.	Catabolic process
C.	Both a and b
D.	Endothermic process.
Answer» B. Catabolic process

discuss

2.	Metabolism involves
A.	Anabolic proces
B.	Catabolic process
C.	Both a and b
D.	Only redox process
Answer» C. Both a and b

discuss

3.	Organisms obtain energy through
A.	Reproduction
B.	Excretion
C.	Respiration
D.	Digestion
Answer» C. Respiration

discuss

4.	Respirations is a
A.	Endepgonic proces
B.	Exergonic process
C.	Both A and B
D.	Neutralisation reaction
Answer» B. Exergonic process

discuss

5.	During respiration the food is
A.	Oxidised
B.	Reduced
C.	Both oxidised and reduced
D.	Neither oxidised nor reduced
Answer» A. Oxidised

discuss

6.	Which of the following is a main respiratory substrate in animals
A.	Fructose
B.	Starch
C.	Glucose
D.	Proteins
Answer» C. Glucose

discuss

7.	During the formation of ATP from ADP, which is released
A.	Water
B.	Oxygen
C.	Both A and B
D.	Energy
Answer» A. Water

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8.	Respiration is found in
A.	Bacteria
B.	Prokaryotes
C.	Only animals
D.	All these
Answer» D. All these

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9.	Respiratory substrate is completely oxidised in
A.	Aerobic respiration
B.	Anaerobic’ respiration.
C.	Both A and B
D.	Fermentation
Answer» A. Aerobic respiration

discuss

10.	In which of the following types of respiration, the amount of energy released is comparatively more
A.	Aerobic respiration
B.	Anaerobic respiration
C.	Equal energy is released in both A and B
D.	None of these in correct
Answer» A. Aerobic respiration

discuss

11.	Fermentation occurs in the
A.	Presence of oxygen
B.	Presence of water
C.	Absence of oxygen
D.	Mitochondria
Answer» C. Absence of oxygen

discuss

12.	First stage in respiration is
A.	Glycolysi
B.	Krebs cycle
C.	ETS
D.	Glycogenesis
Answer» A. Glycolysi

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13.	Glucose is converted to pyruvic acid in
A.	Krebs cycle
B.	C4 cycle
C.	C3 cycle
D.	Glycolysis.
Answer» D. Glycolysis.

discuss

14.	Number of pyruvic acid molecules formed in glycolysis is (Gujarat GET Q.B.)
A.	l
B.	2
C.	3
D.	6
Answer» B. 2

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15.	Number of carbons present in a pyruvic acid t molecule is
A.	2
B.	3
C.	4
D.	6
Answer» B. 3

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16.	Glycolysis occurs in (Gujarat GET Q.B)
A.	Cytoplasm
B.	Mitochondria
C.	Chloroplast
D.	Golgi complex
Answer» A. Cytoplasm

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17.	Number of oxygen molecules used in glycolysis
A.	12
B.	4
C.	6
D.	0
Answer» D. 0

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18.	Number of CO2 molecules produced in glycolysis is
A.	2
B.	3
C.	4
D.	0
Answer» D. 0

discuss

19.	In respiration, final acceptor of protons is :
A.	Oxygen
B.	NAD+
C.	FAD
D.	UQ
Answer» A. Oxygen

discuss

20.	Which is not formed during anaerobic respiration ?
A.	Pyruvate
B.	Ethyl alcohol
C.	Acetyl CoA
D.	CO2
Answer» C. Acetyl CoA

discuss

21.	ADP combines with inorganic phosphate (Pi) to give
A.	ATP
B.	AMK
C.	GDP
D.	GTP
Answer» A. ATP

discuss

22.	Dihydroxy acetone phosphate is a
A.	2 C compound
B.	3 C compound
C.	4 C compound
D.	6 C compound
Answer» B. 3 C compound

discuss

23.	Number of ATPs consumed in glycolysis are
A.	2
B.	4
C.	6
D.	8
Answer» A. 2

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24.	Substrate in glycolysis is normally
A.	Fructose
B.	Glucose
C.	Pyruvic acid
D.	Phosphoglyceric acid
Answer» B. Glucose

discuss

25.	Decarboxylation of pyruvic acid results in the formation of
A.	Water
B.	Acetyl CoA
C.	Glucose
D.	PGA.
Answer» B. Acetyl CoA

discuss

26.	Number of direct ATPs produced in glycolysis is (Gujarat GET Q.B.)
A.	2
B.	4
C.	6
D.	1
Answer» B. 4

discuss

27.	Number of reduced coenzymes NADH produced during glycolysis are
A.	1
B.	2
C.	4
D.	6
Answer» B. 2

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28.	Net gain of glycolysis is
A.	3 ATP and 1 NADH + H+
B.	2 ATP and 2 NADH + H+
C.	6 ATP and 4 NADH + H+
D.	10 ATP and 6 NADH + H+
Answer» B. 2 ATP and 2 NADH + H+

discuss

29.	In respiration, the oxygen is used in
A.	Glycolysi
B.	Krebs cycle
C.	ETS
D.	Fermentation
Answer» C. ETS

discuss

30.	One molecules of NADH+ H + gives how many ATPs in ETS (Gujarat CETQ.B.)
A.	2 ATP
B.	3 ATP
C.	4 ATP
D.	6 ATP
Answer» B. 3 ATP

discuss

31.	Conversion of pyruvic acid to acetyl Co A is called
A.	Glycolysi
B.	Fermentation
C.	ETS
D.	Oxidative decarboxylation
Answer» D. Oxidative decarboxylation

discuss

32.	Reduction of acetaldehyde gives
A.	Methyl alcohol
B.	Ethyl alcohol
C.	Glycerol
D.	All these
Answer» B. Ethyl alcohol

discuss

33.	Lactic acid is formed due to the reduction of (Gujarat GET Q.B.)
A.	Pyruvic acid
B.	Acetaldehyde
C.	Malic acid
D.	Acetyl CoA
Answer» A. Pyruvic acid

discuss

34.	Fermentation is the primary mode of energy production in
A.	Higher plant
B.	Animals
C.	Yeast
D.	Algae.
Answer» C. Yeast

discuss

35.	Krebs cycle occurs in (Gujarat GET Q.B.)
A.	Cytoplasmic matrix
B.	Mitochondrial matrix
C.	F1 particles
D.	All these
Answer» B. Mitochondrial matrix

discuss

36.	Krebs cycle is also known as
A.	Citric acid cycle
B.	TCA cycle
C.	Both a and b
D.	Calvin cycle
Answer» C. Both a and b

discuss

37.	The location of ETS is ;
A.	Mitochondria! matrix
B.	Cytoplasm
C.	Outer mitochondrial membranes
D.	Inner mitochondrial membrane
Answer» D. Inner mitochondrial membrane

discuss

38.	Krebs cycle starts with the condensation of acetyl CoA with
A.	Pyruvic aicd
B.	Oxalo-acetic acid
C.	Malic acid
D.	Citric acid
Answer» B. Oxalo-acetic acid

discuss

39.	- keto glutaric acid consists of
A.	3 carbon
B.	4 carbons
C.	5 carbons
D.	6 carbons
Answer» C. 5 carbons

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40.	Citric acid cycle was proposed by
A.	Kreb
B.	Calvin
C.	Mendel
D.	Lavosier
Answer» A. Kreb

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41.	Direct synthesis of ATPs in one turn of Krebs cycle is
A.	l
B.	2
C.	3
D.	4
Answer» A. l

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42.	Number of NADH + H+, formed in one turn of Krebs cycle is
A.	2
B.	4
C.	6
D.	5
Answer» B. 4

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43.	Number of FADH2 formed in one turn of Krebs cycle is
A.	l
B.	2
C.	3
D.	4
Answer» A. l

discuss

44.	Number of ATPs which can be generated by one FADH2 in ETS are (Gujarat GET Q.B.)
A.	l
B.	2
C.	3
D.	4
Answer» B. 2

discuss

45.	Formation of ATPs in mitochondria is known as
A.	Oxidative phosphorylation
B.	Cyclic photophosphorylation
C.	Noncyclic photophosphorylatian
D.	Fermentation
Answer» A. Oxidative phosphorylation

discuss

46.	Formation of ATP occurs
A.	In outer mitochondrial membrane
B.	On F1 particles
C.	Mitochondrial matrix
D.	In mitochondrial DNA
Answer» B. On F1 particles

discuss

47.	Phosphorylation means
A.	Formation of reduced coenzyme
B.	Formation of PGA
C.	Formation of ATP
D.	Breakdown of ATP
Answer» C. Formation of ATP

discuss

48.	Oxidative phosphorylation occurs in
A.	Mitochondria
B.	Chloroplast
C.	Cytoplasm
D.	Golgi bodies
Answer» A. Mitochondria

discuss

49.	The metal ion present in cytochromes is
A.	Copper
B.	Iron
C.	Magnesium
D.	Zinc
Answer» B. Iron

discuss

50.	CO2 release occurs in
A.	Photosynthesi
B.	Respiration
C.	Transpiration
D.	Guttation
Answer» B. Respiration

discuss

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160+ Respiration Solved MCQs

Respiration is (Grujarat GET Q.B.)

Metabolism involves

Organisms obtain energy through

Respirations is a

During respiration the food is

Which of the following is a main respiratory substrate in animals

During the formation of ATP from ADP, which is released

Respiration is found in

Respiratory substrate is completely oxidised in

In which of the following types of respiration, the amount of energy released is comparatively more

Fermentation occurs in the

First stage in respiration is

Glucose is converted to pyruvic acid in

Number of pyruvic acid molecules formed in glycolysis is (Gujarat GET Q.B.)

Number of carbons present in a pyruvic acid t molecule is

Glycolysis occurs in (Gujarat GET Q.B)

Number of oxygen molecules used in glycolysis

Number of CO2 molecules produced in glycolysis is

In respiration, final acceptor of protons is :

Which is not formed during anaerobic respiration ?

ADP combines with inorganic phosphate (Pi) to give

Dihydroxy acetone phosphate is a

Number of ATPs consumed in glycolysis are

Substrate in glycolysis is normally

Decarboxylation of pyruvic acid results in the formation of

Number of direct ATPs produced in glycolysis is (Gujarat GET Q.B.)

Number of reduced coenzymes NADH produced during glycolysis are

Net gain of glycolysis is

In respiration, the oxygen is used in

One molecules of NADH+ H + gives how many ATPs in ETS (Gujarat CETQ.B.)

Conversion of pyruvic acid to acetyl Co A is called

Reduction of acetaldehyde gives

Lactic acid is formed due to the reduction of (Gujarat GET Q.B.)

Fermentation is the primary mode of energy production in

Krebs cycle occurs in (Gujarat GET Q.B.)

Krebs cycle is also known as

The location of ETS is ;

Krebs cycle starts with the condensation of acetyl CoA with

- keto glutaric acid consists of

Citric acid cycle was proposed by

Direct synthesis of ATPs in one turn of Krebs cycle is

Number of NADH + H+, formed in one turn of Krebs cycle is

Number of FADH2 formed in one turn of Krebs cycle is

Number of ATPs which can be generated by one FADH2 in ETS are (Gujarat GET Q.B.)

Formation of ATPs in mitochondria is known as

Formation of ATP occurs

Phosphorylation means

Oxidative phosphorylation occurs in

The metal ion present in cytochromes is

CO2 release occurs in