Biochemistry Questions and Answers – The Role of Mitochondria in Apoptosis and Oxidative Stress

This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “The Role of Mitochondria in Apoptosis and Oxidative Stress”.

1. What is the effect of the excessive rate of apoptosis?
a) Atrophy
b) Sneezing
c) Fever
d) AIDS
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2. What is the rate of apoptosis in average human adult per day?
a) 10 billion cells
b) 30 billion cells
c) 50-70 billion cells
d) 100 billion cells
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3. Oxidative stress (in humans) is not involved in the development of ____________
a) Cancer
b) Parkinson’s disease
c) Heart failure
d) Kidney failure
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4. Programmed cell death can be termed as ____________
a) Oxidative stress
b) Apoptosis
c) Cell division
d) Cell cycle
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5. Which one of the following is true about C₄ plants?
a) They minimize rubisco oxygenase activity by fixing CO₂ into oxaloacetate
b) They mainly occur in areas of high temperature and light intensity
c) They minimize the rubisco oxygenase activity by fixing CO₂ into phosphoenolpyruvic acid
d) C₃ plants are more efficient in photosynthesis than C₄ plants
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6. Which one of the following is true about C₃ plants?
a) First stable product is phosphoglyceric acid
b) Photosynthetically more efficient
c) More efficient in CO₂ fixation than C₄ plants
d) None of the mentioned
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7. Which is the first stable product of the dark reaction in C₄ plants?
a) Phosphoglyceric acid
b) Oxaloacetic acid
c) Glycolic acid
d) Malic acid
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8. Which of the following is the distinguishable feature of cyclic photophosphorylation?
a) Phosphorylation only takes place
b) Phosphorylation and photolysis take place
c) Photolysis of water is taking place
d) None of the mentioned
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9. The light reaction of photosynthesis takes place in ____________
a) Inner membrane of chloroplast
b) Outer membrane of chloroplast
c) Stroma
d) Matrix
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10. Which of the following group of plants contains agranal chloroplast?
a) C₃ plants
b) C₄ plants
c) C₂ plants
d) C₁ plants
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Sanfoundry Global Education & Learning Series – Biochemistry.

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