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Bioenergetics
9 Class 11 Biology questions with answers and explanations.
Printable worksheet with answer key
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The light reactions of photosynthesis occur in the:
- 1 Cytoplasm
- 2 Stroma
- 3 Thylakoid membranes
- 4 Nucleus
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Correct answer: Thylakoid membranes
Thylakoids contain chlorophyll and the light dependent reactions.
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The Calvin cycle takes place in the:
- 1 Stroma
- 2 Thylakoid
- 3 Cristae
- 4 Matrix of mitochondria
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Correct answer: Stroma
The Calvin cycle occurs in the stroma of the chloroplast.
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Glycolysis takes place in the:
- 1 Nucleus
- 2 Mitochondrion
- 3 Cytoplasm
- 4 Chloroplast
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How many ATP are produced in glycolysis (net) per glucose?
- 1 4
- 2 0
- 3 36
- 4 2
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Correct answer: 2
Two ATP are used and four are made, giving a net of 2.
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The Krebs cycle occurs in the:
- 1 Cytoplasm
- 2 Mitochondrial matrix
- 3 Nucleus
- 4 Chloroplast
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Correct answer: Mitochondrial matrix
It takes place in the matrix of mitochondria.
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The final electron acceptor in aerobic respiration is:
- 1 Carbon dioxide
- 2 Hydrogen
- 3 Oxygen
- 4 NADH
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The pigment that absorbs red and blue light most is:
- 1 Xanthophyll
- 2 Haemoglobin
- 3 Carotene
- 4 Chlorophyll a
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Correct answer: Chlorophyll a
Chlorophyll a is the main photosynthetic pigment.
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In the light reactions, water is split in a process called:
- 1 Fermentation
- 2 Glycolysis
- 3 Transcription
- 4 Photolysis
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Fermentation in muscles produces:
- 1 Oxygen
- 2 Glucose
- 3 Ethanol
- 4 Lactic acid
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Correct answer: Lactic acid
Muscles make lactic acid when oxygen is short.