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The table below compares two types of respiration.

Respiration Types
Type A Type B
Carbon dioxide produced Yes No
Fermentation involved No Yes

Which statement about Type A and Type B respiration is correct?
Type A respiration involves electron transport, but Type B respiration does not.
Type A respiration produces lactic acid, but Type B respiration does not.
Type A respiration does not involve glycolysis, but Type B respiration involves glycolysis.
Type A respiration produces ATP, but Type B respiration does not produce ATP.

1 answer

To analyze the statements, we need to understand the characteristics of each type of respiration based on the table.

  • Type A respiration: Produces carbon dioxide, does not involve fermentation.
  • Type B respiration: Does not produce carbon dioxide, involves fermentation.

Now, let's examine each statement:

  1. Type A respiration involves electron transport, but Type B respiration does not.

    • Correct. Type A respiration typically refers to aerobic respiration, which involves the electron transport chain. Type B (fermentation) does not involve electron transport.

  2. Type A respiration produces lactic acid, but Type B respiration does not.

    • Incorrect. Lactic acid is produced through certain fermentation pathways, which is what Type B respiration involves.

  3. Type A respiration does not involve glycolysis, but Type B respiration involves glycolysis.

    • Incorrect. Glycolysis occurs in both Type A respiration and Type B respiration.

  4. Type A respiration produces ATP, but Type B respiration does not produce ATP.

    • Incorrect. Both types of respiration produce ATP, though the mechanisms and amounts differ.

Based on this analysis, the correct statement is: Type A respiration involves electron transport, but Type B respiration does not.