Anaerobic respiration produces ______ amount of energy as compared to aerobic respiration because _____ produced during anaerobic respiartion is not broken down completely into `CO_(2)andH_(2)O`.

Options

A. i-lesser, ii-lactic acid
B. i-lesser, ii-citric acid
C. i-larger, ii-lactic acid
D. i-larger, ii-citric acid

Answer

**Step-by-Step Solution:**

1. **Understanding Anaerobic vs. Aerobic Respiration:**
- Anaerobic respiration occurs in the absence of oxygen, while aerobic respiration requires oxygen.
- In aerobic respiration, glucose is fully oxidized to produce carbon dioxide (CO₂) and water (H₂O), releasing a significant amount of energy.

2. **Energy Production Comparison:**
- Aerobic respiration produces a total of approximately 36-38 ATP molecules per glucose molecule.
- In contrast, anaerobic respiration produces only about 2 ATP molecules per glucose molecule.

3. **End Products of Anaerobic Respiration:**
- The end products of anaerobic respiration are either lactic acid (in animals) or ethanol and carbon dioxide (in yeast).
- Unlike aerobic respiration, where glucose is completely broken down into CO₂ and H₂O, anaerobic respiration does not fully oxidize glucose.

4. **Filling in the Blanks:**
- The first blank in the question can be filled with "lesser" because anaerobic respiration produces a lesser amount of energy compared to aerobic respiration.
- The second blank can be filled with "lactic acid" (or "ethanol" depending on the organism) because this is the product formed during anaerobic respiration that is not completely broken down into CO₂ and H₂O.

5. **Final Answer:**
- Anaerobic respiration produces **lesser** amount of energy as compared to aerobic respiration because **lactic acid** (or ethanol) produced during anaerobic respiration is not broken down completely into CO₂ and H₂O.