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IMPORTANT
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Which of the following is a physical basis of life?

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Important Questions on Biology

HARD
DRDO MTS Tier - II
IMPORTANT
General Science for Competitive Exams>Chapter 3 - Biology>MCQs>Q 377

In which of the following cell organelles do photo and thermochemical reactions occur in different sites?

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IMPORTANT
General Science for Competitive Exams>Chapter 3 - Biology>MCQs>Q 378

Which of the following cell organelles are known as the suicidal bags since they liberate such enzymes that can cause the breakdown of the cell?

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DRDO MTS Tier - II
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General Science for Competitive Exams>Chapter 3 - Biology>MCQs>Q 379
Chromosomes are:
EASY
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IMPORTANT
General Science for Competitive Exams>Chapter 3 - Biology>MCQs>Q 380

Which of the following structures are commonly present in animal cells and not in plant cells?

1. Mitochondria

2. Lysosomes

3. Ribosomes

4. Centrosomes

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DRDO MTS Tier - II
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General Science for Competitive Exams>Chapter 3 - Biology>MCQs>Q 384
A molecule of glucose on complete oxidation yields _____ ATP molecules in case of aerobic respiration.
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IMPORTANT
General Science for Competitive Exams>Chapter 3 - Biology>MCQs>Q 385
In anaerobic respiration, the net gain of ATP per glucose molecule oxidised is _____.
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DRDO MTS Tier - II
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General Science for Competitive Exams>Chapter 3 - Biology>MCQs>Q 386

Which of the following is the correct sequence of the different phases of mitotic division ?

1. Metaphase

2. Anaphase

3. Prophase

4. Telophase

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DRDO MTS Tier - II
IMPORTANT
General Science for Competitive Exams>Chapter 3 - Biology>MCQs>Q 387

In which one of the following types of cell divisions does crossing over of chromosomes takes place ?