Question

1. after a workout, the muscles in a basketball players legs are very sore. which of the following statements best explains why the basketball player experiences this muscle soreness after a workout?

a there is an increase in the amount of water being delivered to the muscle cells during the process of anaerobic respiration.
b there is an increase in the amount of oxygen being delivered to the muscle cells during the process of aerobic respiration.
c there is an increase in the amount of glucose being produced in the muscle cells during the process of aerobic respiration.
d there is an increase in the amount of lactic acid being produced in the muscle cells during the process of anaerobic respiration.

Explanation:

During anaerobic respiration in muscle cells (which occurs when the body needs energy quickly, like during intense exercise), glucose is broken down without oxygen. One of the by - products of anaerobic respiration in human muscle cells is lactic acid. The build - up of lactic acid in the muscle cells causes muscle soreness.

• Option A: Water is not a main cause of muscle soreness in this context. Anaerobic respiration in muscle cells does not primarily lead to a significant increase in water - related soreness.
• Option B: An increase in oxygen is related to aerobic respiration. Aerobic respiration does not cause the type of muscle soreness described here.
• Option C: Glucose is consumed (not produced) during aerobic and anaerobic respiration in muscle cells for energy production.
• Option D: Lactic acid build - up from anaerobic respiration is the cause of the muscle soreness.

Answer:

D. There is an increase in the amount of lactic acid being produced in the muscle cells during the process of anaerobic respiration.