Class 11 Biology · Chapter 6 · Test 1
Bioenergetics Part 1
43 MCQs This set covers ATP as the energy currency, the overall process of photosynthesis, and the roles of light, carbon dioxide and water. It also covers photosynthetic pigments, chlorophyll structure, absorption and action spectra and the photosystems.
43 questions · 30 min · 43 marks
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Sample questions
The first 5 of 43. Try each one, then tap to see the answer.
Question 1
ATP stands for
- AAdenosine triphosphate
- BAdenine triphosphate
- CAdenosine diphosphate
- DAdenosine monophosphate
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Answer: A
ATP is a nucleotide that acts as the energy currency of cells.
Question 2
A molecule of ATP has which three subunits?
- AAdenine and ribose and three phosphate groups
- BGuanine and deoxyribose and two phosphates
- CAdenine and glucose and one phosphate
- DUracil and ribose and three phosphates
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Answer: A
ATP has a nitrogen base adenine and a five-carbon sugar ribose and three phosphate groups.
Question 3
Who discovered ATP in 1929?
- AKarl Lohmann
- BFritz Lipmann
- CMelvin Calvin
- DHans Krebs
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Answer: A
Fritz Lipmann later proposed in 1941 that ATP is the main energy-transfer molecule.
Question 4
Who proposed that ATP is the main energy-transfer molecule of the cell?
- AKarl Lohmann
- BFritz Lipmann
- CVan Niel
- DEngelmann
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Answer: B
He proposed this in 1941 and won a Nobel prize.
Question 5
Breaking one phosphate bond of ATP releases about
- A7.3 kcal per mole
- B73 kcal per mole
- C0.73 kcal per mole
- D730 kcal per mole
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Answer: A
The bonds between phosphates are high-energy bonds.
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