Respiration in Plants Test

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Respiration in Plants Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

At the end of citric acid cycle, most of the energy is transferred to

A
ATP

B
Citric acid

C
NADH and FADH₂

D
Oxaloacetic acid

Solution

Citric acid cycle or C_3cycle start with pyruvate and leads to complete oxidation of glucose to carbon dioxide and energy in form of ATP, NADH and FADH₂.

At end of citric acid cycle, most of the energy is transferred to NADH and FADH₂.
Question 2
1 / -0

In eukaryotic organisms aerobic respiration takes place in presence of

A
Lactic acid

B
Oxygen

C
Carbon dioxide

D
Ethanol

Solution

Aerobic means “with air”. This type of respiration needs oxygen for it to occur so it is called aerobic respiration.

The word equation for aerobic respiration is:

Glucose + Oxygen → Carbon dioxide + Water + Energy

The chemical equation is:

C₆H₁₂O₆ + 6O₂→ 6CO₂ + 6H₂O + 2900 kJ/mol
Question 3
1 / -0

Electron transport system take place in

A
Cristae

B
Matrix

C
Mitochondrial space

D
Inner mitochondrial membrane

Solution

The metabolic pathway through which the electron passes from one carrier to another, is called the ETS and it is present in the inner mitochondrial membrane.
Question 4
1 / -0

Arrange the following in descending order based upon number of carbon atoms in Kreb cycle a) α-ketoglutaric acid b) citric acid c) Acetyl coA d) Succinic acid

A
b), a), d), c)

B
b), c), d), a)

C
a), b), c), d)

D
a), d), b), c)

Solution

In kerb cycle citric acid consists of 6C atoms ,α-ketoglutaric acid consist of 5C atoms, succinic acid consists of 4 C atoms and Acetyl co A consists of 2C atoms,
Question 5
1 / -0

In electron transport system, the two copper centres are found in

A
Ubiquinone

B
NADH dehydrogenase

C
cytochrome c oxidase

D
Pyruvate dehydrogenase

Solution

The enzyme cytochrome c oxidase or Complex IV,is a large transmembrane protein complex found in bacteria and the mitochondrion of eukaryotes.

The complex contains two hemes, a cytochrome a and cytochrome a₃, and two copper centers, the Cu_A and Cu_B centers. The cytochrome a₃ and Cu_B form a binuclear center that is the site of oxygen reduction.
Question 6
1 / -0

The complex V is also known as

A
NAD

B
F_oF₁-ATPase.

C
FAD

D
ADP

Solution

complex V or ATP synthase can be separated into 2 parts:

F_o - the portion embedded in the inner mitochondrial membrane and

F₁-ATPase — the portion projecting into the matrix of the mitochondrion. This

is why the intact ATP synthase is also called the F_oF₁-ATPase.
Question 7
1 / -0

The cytochrome c moves in between

A
Complex III and IV

B
Complex II and III

C
Complex I and IV

D
Complex I and II

Solution

Cytochrome c is a small protein attached to the outer surface of the inner membrane and acts as a mobile carrier for transfer of electrons between complex III and IV.
Question 8
1 / -0

In electron transport system, the oxidation of one molecule of NADH produces

A
3 molecules of ATP

B
4 molecules of ATP

C
2 molecules of ATP

D
1 molecule of ATP

Solution

Oxidation of one molecule of NADH gives rise to 3 molecules of ATP, while that of one molecule of FADH₂ produces 2 molecules of ATP.

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Respiration in Plants Test - 4

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Respiration in Plants Test - 4

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Question 1

ATP

Citric acid

NADH and FADH2

Oxaloacetic acid

Solution

Question 2

Lactic acid

Oxygen

Carbon dioxide

Ethanol

Solution

Question 3

Cristae

Matrix

Mitochondrial space

Inner mitochondrial membrane

Solution

Question 4

b), a), d), c)

b), c), d), a)

a), b), c), d)

a), d), b), c)

Solution

Question 5

Ubiquinone

NADH dehydrogenase

cytochrome c oxidase

Pyruvate dehydrogenase

Solution

Question 6

NAD

FoF1-ATPase.

FAD

ADP

Solution

Question 7

Complex III and IV

Complex II and III

Complex I and IV

Complex I and II

Solution

Question 8

3 molecules of ATP

4 molecules of ATP

2 molecules of ATP

1 molecule of ATP

Solution

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NADH and FADH₂

F_oF₁-ATPase.