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Past Papers Biology MCQs Question Answers
Q.1: Lungs are spongy due to the presence of million of——?
- Air sacs
- Alveoli
- Bronchioles
- Parabronchi
B
Q.2: —— respiration is directly involved in the production of energy, necessary for all living activities?
- Organismic
- Cellular
- Both of these
- None of these
B
Q.3: Lungs are covered with double layered thin membranous sac called——?
- Disphragm
- Pleura
- Pericardium
- Rib cage
B
Q.4: —— respiration is the process by which cell utilized oxygen and produces CO2 ?
- Cellular
- Organismic
- Both of these
- None of these
A
Q.5: During rest the breathing occurs rhythmically at the frequency of —– times per minute in human?
- 16-30
- 15-20
- 5-10
- 6-12
B
Q.6: Of the following, which one is better respiratory medium——?
- Air
- Water
- Soil
- None of these
A
Q.7: The arrangement of —– speaks of the division of labour within cell?
- Molecule
- Subatomic particles
- Atoms
- Organelles
D
Q.8: NADH is oxidized by——?
- Coenzyme
- Cytochrome b
- Oxygen
- Glycolysis
A
Q.9: Salivary glands present in front of ear are——?
- Sublingual
- Submaxillary
- Submandibular
- Parotid
D
Q.10: How many spiracles are present in cockroach——-?
- 5
- 10
- 20
- 40
C