SAT Biology - Respiration

Exam Duration: 45 Mins Total Questions : 30

1 )

In respiration, pyruvic acid is

(a)
formed only when the cell is with mitochondria
(b)
formed only when oxygen is available
(c)
formed only when cell is performing aerobic respiration
(d)
Commonly formed as intermediate product of aerobic and anaerobic respiration

2 )

Onegram mole of glucose on complete oxidation to CO₂ and H₂O produce about

(a)
686,000 cal
(b)
6,860 cal
(c)
6,860,000 cal
(d)
68,600 cal

3 )

What ultimately occurs during respiration?

(a)
Synthesis ATP
(b)
Electron transport
(c)
Breakdown of ATP
(d)
Capture of solar energy

4 )

How many ATPs are produced from NADH₂ during aerobic respiration?

(a)
30
(b)
8
(c)
34
(d)
2

5 )

Connection link between EMP pathway &TCA cycle is

(a)
Pyruvic acid
(b)
Citric acid
(c)
Acetyl Co-A
(d)
Oxalosuccinic acid

6 )

In aerobic respiration, the energy in 1 mole of glucose is capable of producing how many ATP molecuels?

(a)
2 molecules of ATP
(b)
38 molecules of ATP
(c)
2 x (6.02 X 10²³) molecules of ATP
(d)
38 x (6.02 x 10²³) molecules of ATP

7 )

When you hold your breath for half a minute, the carbon dioxide concentration in the blood?

(a)
increases
(b)
decreases
(c)
same
(d)
neither decrease nor increase

8 )

The breathing rate of humans is principally regulated by the concentration of

(a)
CO₂ in the blood
(b)
Oxygen in the blood
(c)
Platelets in the blood
(d)
White blood cells in the blood

9 )

Oxygen is carried in man chiefly by the

(a)
ammonia molecule
(b)
hydrochloric acid molecule
(c)
Carbonate ion
(d)
haemoglobin molecule

10 )

Respiration in cockroach is

(a)
anaerobic
(b)
with the help of respiratory pigment
(c)
direct and without respiratory pigment
(d)
cockroach does not respire

11 )

Maintenance of high body temperature helps mammals is carring fast

(a)
Respiration
(b)
Reproduction
(c)
Locomotion
(d)
Digestion

12 )

Out of the total available energy, the percentage of energy conserved as ATP in the anaerobic respiration of glucose comes to

(a)
40%
(b)
14.6%
(c)
60%
(d)
2%

13 )

What is another name for the wind pipe?

(a)
Lungs
(b)
Larynx
(c)
Trachea
(d)
Oesophagus

14 )

Oxygen moves from the lungs into blood stream through _______

(a)
nerve fibres
(b)
a large artery in the heart
(c)
small blood vessels in the lungs
(d)
A tube in the lungs called the jugular vein

15 )

Inner membrane involutions of a mitochondria are called

(a)
Lamellae
(b)
Cristae mitochondriales
(c)
Thylokoid
(d)
Tubules

16 )

In TCA cycle, GTP is formed during conversion of

(a)
Succinyl Co-A into succinic acid
(b)
α -Keto glutaric acid to succinyl Co-A.
(c)
Succinic acid to fumaric acid
(d)
Both A & B

17 )

Process of respiration -in green plants take

(a)
Only when photosynthesis is in open
(b)
Only when stomata are open
(c)
only when photosynthesis cease
(d)
All the times

18 )

Which of the following is not a product of fermentation?

(a)
CO₂
(b)
O₂
(c)
Ethanol
(d)
Lactate

19 )

What role does O₂ play in aerobic respiration?

(a)
It plays no role
(b)
It combines with acetyl Co-A at the start of the Krebs cycle
(c)
It is given off as a by-product during the oxidation of pyruvate
(d)
It is the final electron acceptor at the end of the electron transport chain

20 )

Organisms that do not have the ability to produce or synthesize their own food are called