Question
Give ten WAEC, WASSCE, GCE / NECO questions with their question numbers and answers on cellular respiration in senior secondary school biology
Answers
GPT-4o mini
Sure! Here are ten sample questions related to cellular respiration that could be found in WAEC, WASSCE, GCE, or NECO examinations, along with their answers.
### Questions and Answers on Cellular Respiration
1. **Question 1:**
What is the primary purpose of cellular respiration in living organisms?
- A) To produce oxygen
- B) To synthesize proteins
- C) To convert glucose into energy
- D) To remove waste products
**Answer:** C) To convert glucose into energy
2. **Question 2:**
Which of the following reactions represents aerobic respiration?
- A) C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + ATP
- B) C₆H₁₂O₆ + 2 ATP → 2 C₂H₅OH + 2 CO₂
- C) C₆H₁₂O₆ + 4 ATP → 2 ATP + lactic acid
- D) C₆H₁₂O₆ + 2 O₂ → 2 H₂O + 2 CO₂ + energy
**Answer:** A) C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + ATP
3. **Question 3:**
During glycolysis, how many molecules of ATP are produced from one molecule of glucose?
- A) 2
- B) 4
- C) 36
- D) 38
**Answer:** B) 4 (Net gain is 2 ATP)
4. **Question 4:**
What are the end products of anaerobic respiration in yeast?
- A) Lactic acid and ATP
- B) Glucose and oxygen
- C) Ethanol, carbon dioxide, and ATP
- D) Pyruvate and NADH
**Answer:** C) Ethanol, carbon dioxide, and ATP
5. **Question 5:**
In cellular respiration, what role does oxygen play?
- A) It is a product of glycolysis.
- B) It acts as an electron acceptor in the electron transport chain.
- C) It is involved in the conversion of glucose to pyruvate.
- D) It synthesizes ATP directly.
**Answer:** B) It acts as an electron acceptor in the electron transport chain.
6. **Question 6:**
Which of the following is NOT a stage of aerobic respiration?
- A) Glycolysis
- B) Krebs cycle
- C) Fermentation
- D) Electron transport chain
**Answer:** C) Fermentation
7. **Question 7:**
Which molecule is primarily produced during the Krebs cycle?
- A) Lactic acid
- B) Carbon dioxide
- C) Ethanol
- D) Acetyl-CoA
**Answer:** B) Carbon dioxide
8. **Question 8:**
What is the net gain of ATP molecules during the complete breakdown of one molecule of glucose through aerobic respiration?
- A) 2
- B) 18
- C) 30-32
- D) 36
**Answer:** C) 30-32
9. **Question 9:**
The process of breaking down glucose in the absence of oxygen is called:
- A) Aerobic respiration
- B) Anaerobic respiration
- C) Photosynthesis
- D) Oxidative phosphorylation
**Answer:** B) Anaerobic respiration
10. **Question 10:**
Which of the following is a characteristic of cellular respiration?
- A) It only occurs in plants.
- B) It requires sunlight.
- C) It produces ATP.
- D) It is a process that can only occur in the presence of carbon dioxide.
**Answer:** C) It produces ATP.
These questions provide a sample that tests knowledge and understanding of cellular respiration, a key topic in senior secondary school biology.
### Questions and Answers on Cellular Respiration
1. **Question 1:**
What is the primary purpose of cellular respiration in living organisms?
- A) To produce oxygen
- B) To synthesize proteins
- C) To convert glucose into energy
- D) To remove waste products
**Answer:** C) To convert glucose into energy
2. **Question 2:**
Which of the following reactions represents aerobic respiration?
- A) C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + ATP
- B) C₆H₁₂O₆ + 2 ATP → 2 C₂H₅OH + 2 CO₂
- C) C₆H₁₂O₆ + 4 ATP → 2 ATP + lactic acid
- D) C₆H₁₂O₆ + 2 O₂ → 2 H₂O + 2 CO₂ + energy
**Answer:** A) C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + ATP
3. **Question 3:**
During glycolysis, how many molecules of ATP are produced from one molecule of glucose?
- A) 2
- B) 4
- C) 36
- D) 38
**Answer:** B) 4 (Net gain is 2 ATP)
4. **Question 4:**
What are the end products of anaerobic respiration in yeast?
- A) Lactic acid and ATP
- B) Glucose and oxygen
- C) Ethanol, carbon dioxide, and ATP
- D) Pyruvate and NADH
**Answer:** C) Ethanol, carbon dioxide, and ATP
5. **Question 5:**
In cellular respiration, what role does oxygen play?
- A) It is a product of glycolysis.
- B) It acts as an electron acceptor in the electron transport chain.
- C) It is involved in the conversion of glucose to pyruvate.
- D) It synthesizes ATP directly.
**Answer:** B) It acts as an electron acceptor in the electron transport chain.
6. **Question 6:**
Which of the following is NOT a stage of aerobic respiration?
- A) Glycolysis
- B) Krebs cycle
- C) Fermentation
- D) Electron transport chain
**Answer:** C) Fermentation
7. **Question 7:**
Which molecule is primarily produced during the Krebs cycle?
- A) Lactic acid
- B) Carbon dioxide
- C) Ethanol
- D) Acetyl-CoA
**Answer:** B) Carbon dioxide
8. **Question 8:**
What is the net gain of ATP molecules during the complete breakdown of one molecule of glucose through aerobic respiration?
- A) 2
- B) 18
- C) 30-32
- D) 36
**Answer:** C) 30-32
9. **Question 9:**
The process of breaking down glucose in the absence of oxygen is called:
- A) Aerobic respiration
- B) Anaerobic respiration
- C) Photosynthesis
- D) Oxidative phosphorylation
**Answer:** B) Anaerobic respiration
10. **Question 10:**
Which of the following is a characteristic of cellular respiration?
- A) It only occurs in plants.
- B) It requires sunlight.
- C) It produces ATP.
- D) It is a process that can only occur in the presence of carbon dioxide.
**Answer:** C) It produces ATP.
These questions provide a sample that tests knowledge and understanding of cellular respiration, a key topic in senior secondary school biology.