Questions on Glucose and ATP
20 multiple choice questions on Glucose and ATP, followed by the answer key at the end.
Multiple Choice Questions: Glucose and ATP
1. What is the main function of glucose in cells?
A) To transport oxygen
B) To provide structural support
C) To serve as a source of energy
D) To form cell membranes
2. ATP stands for:
A) Adenosine tri-phosphate
B) Adenine tripolymer
C) Acetyl thiamine phosphate
D) Adenosine transferase protein
3. Which molecule is the most immediate source of energy for cellular activities?
A) Glucose
B) Protein
C) ATP
D) DNA
4. What is released when ATP is broken down into ADP?
A) DNA
B) Oxygen
C) Energy
D) Heat only
5. Where is most ATP produced in the cell?
A) Nucleus
B) Ribosome
C) Mitochondrion
D) Golgi apparatus
6. How many phosphate groups does ATP contain?
A) One
B) Two
C) Three
D) Four
7. The breakdown of glucose in the presence of oxygen is called:
A) Fermentation
B) Anaerobic respiration
C) Photosynthesis
D) Cellular respiration
8. What are the products of cellular respiration?
A) Glucose and water
B) Oxygen and glucose
C) Carbon dioxide, water, and ATP
D) ATP and lactic acid
9. Which of the following contains stored energy used to regenerate ATP?
A) Water
B) Glucose
C) Oxygen
D) Nucleotides
10. During glycolysis, glucose is broken down into:
A) Water
B) Pyruvate
C) Oxygen
D) Lactic acid
11. Which best describes the role of ATP in the cell?
A) DNA replication
B) Energy currency of the cell
C) Structural molecule
D) Hormone signal
12. Which process directly generates ATP from glucose?
A) Photosynthesis
B) Protein synthesis
C) Cellular respiration
D) Transcription
13. Which organelle is known as the "powerhouse of the cell" due to ATP production?
A) Nucleus
B) Lysosome
C) Mitochondrion
D) Chloroplast
14. How is energy stored in an ATP molecule?
A) In the sugar
B) In the nitrogenous base
C) In the phosphate bonds
D) In the hydrogen atoms
15. Which of the following best describes ADP?
A) A molecule that stores more energy than ATP
B) A molecule that has lost one phosphate group
C) A by-product of photosynthesis
D) A sugar
16. In which stage of cellular respiration is the most ATP generated?
A) Glycolysis
B) Krebs cycle
C) Electron transport chain
D) Fermentation
17. What is the source of the glucose used in cellular respiration in plants?
A) DNA
B) Photosynthesis
C) Soil nutrients
D) Protein breakdown
18. Which of the following organisms use glucose for energy?
A) Only animals
B) Only plants
C) All living organisms
D) Only bacteria
19. Why is ATP called the "energy currency" of the cell?
A) It stores information
B) It glows in the dark
C) It transfers energy for cell activities
D) It binds to proteins
20. Which part of ATP is removed to release energy?
A) Ribose sugar
B) Adenine base
C) One phosphate group
D) The entire molecule
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Answer Key
1. C – To serve as a source of energy
2. A – Adenosine tri-phosphate
3. C – ATP
4. C – Energy
5. C – Mitochondrion
6. C – Three
7. D – Cellular respiration
8. C – Carbon dioxide, water, and ATP
9. B – Glucose
10. B – Pyruvate
11. B – Energy currency of the cell
12. C – Cellular respiration
13. C – Mitochondrion
14. C – In the phosphate bonds
15. B – A molecule that has lost one phosphate group
16. C – Electron transport chain
17. B – Photosynthesis
18. C – All living organisms
19. C – It transfers energy for cell activities
20. C – One phosphate group
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