1st PUC Biology Previous Year Question Papers. We covered all the 1st PUC Biology Previous Year Question Papers MCQs in this post for free so that you can practice well for the exam.
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1st PUC Biology Previous Year Objective Question Papers for Students
The complete conversion of glucose, in the presence of oxygen, into carbon dioxide and water with the release of energy is called:
(a) Aerobic respiration
(b) Anaerobic respiration
(c) Glycolysis
(d) Hydrolysis
Option a – Aerobic respiration
Which of the following cell organelles is responsible for cellular respiration?
(a) Golgi bodies
(b) Mitochondria
(c) Nucleus
(d) Lysosomes
Option b – Mitochondria
Which of the following contains enzymes for cellular respiration?
(a) Dictyosomes
(b) Endoplasmic reticulum
(c) Lysosomes
(d) Mitochondria
Option d – Mitochondria
Fruits stored in a cold chamber exhibit a longer storage life because:
(a) Exposure to sunlight is prevented.
(b) The concentration of carbon dioxide in the environment is increased.
(c) The rate of respiration is decreased.
(d) There is an increase in humidity.
Option c – Rate of respiration is decreased
What is the ultimate product of Glycolysis?
(a) Ethyl alcohol
(b) Carbon dioxide
(c) Pyruvic acid
(d) Glucose
Option c – Pyruvic acid
Which is true for glycolysis?
(a) It is not common to both aerobic and anaerobic respiration.
(b) Substrate level phosphorylation.
(c) Expenditure of H₂O.
(d) Production of NAD
Option b – Substrate level phosphorylation
Which of the following processes makes direct use of oxygen?
(a) Glycolysis
(b) Fermentation
(c) Citric Acid Cycle
(d) Electron transport
Option d – Electron transport
Which of the following full forms of ATP is correct?
(a) Adenosine Tetraphosphate
(b) Adenine Tetraphosphate
(c) Adenosine Triphosphate
(d) None of the above
Option c – Adenosine Triphosphate
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