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Biology 1525 MCQs [All-Courses]

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Biology covers key concepts of life, organisms, and human systems with exam-focused notes for PPSC, FPSC, KPPSC, BPSC.,NTS, OTS, AJKPSC. Clear, concise topics help students prepare effectively for competitive tests.

All Topics  1525

___________ respiration is the process by which cell utilized oxygen and produces CO2 ?

A Cellular
B Organismic
C Both of these
D None of these
Correct Answer: Cellular

Lungs are covered with double layered thin membranous sac called___________?

A Disphragm
B Pleura
C Pericardium
D Rib cage
Correct Answer: Pleura

___________ respiration is directly involved in the production of energy, necessary for all living activities?

A Organismic
B Cellular
C Both of these
D None of these
Correct Answer: Cellular

Lungs are spongy due to the presence of million of___________?

A Air sacs
B Alveoli
C Bronchioles
D Parabronchi
Correct Answer: Alveoli

Breaking of terminal phosphate of ATP releases about ___________ Kcal of energy?

A 6.1
B 6.3
C 7.1
D 7.3
Correct Answer: 7.3

ATP are consumed during___________?

A Glycolysis
B Kreb’s cycle
C Light dependent phase
D none of these
Correct Answer: Glycolysis

Cellular respiration is essentially a/an _____________ process?

A Oxidation.
B Reduction.
C Redox.
D None of the above.
Correct Answer: Oxidation.

From one pyruvate passing through Kreb’s cycle, how many NADH are formed?

A 1
B 2
C 3
D 4
Correct Answer: 3

In Anaerobic respiration only __________ % of the energy present within the chemical bond of glucose is converted into ATP?

A 1%
B 2%
C 3%
D 4%
Correct Answer: 2%

Final acceptor of electrons in respiratory chain is____________?

A NADH
B Cytochrome a3
C Water
D Oxygen
Correct Answer: Oxygen
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