Question

Which of the following statements about muscle metabolism is false?

1) ATP can be quickly obtained by combining ADP with phosphate derived from creatine phosphate

2) Energy obtained from hydrolysis of ATP is used for the formation of cross bridges.

3) ATP is required for pumping of the Ca2+ back into the sarcoplasmic reticulum

4) Aerobic oxidation of glycogen during rapid muscle contraction leads to accumulation of lactic acid, causing fatigue​

Answer 1

Answer:

option 4 is incorrect.

accumulation of lactic acid is due to anaerobic respiration

Answer 2

$\large\bf\blue{1. True}$

$\large\bf\green{2. True}$

$\large\bf\pink{3. True}$

$\large\bf\purple{4. False}$

$\large\bf\underline\red{Hence,\: 4\: statement\: is \: wrong}$

Beacuse lactic acid accumulation in the muscle tissue reduces the pH, making it more acidic and producing the stinging feeling in muscles when exercising. This further inhibits anaerobic respiration, inducing fatigue.