The portal has been deactivated. Please contact your portal admin.

Question Video: Outlining the Disadvantage of Lactic Acid in the Body Biology

Which of the following is a disadvantage of having lactic acid in the body? [A] If it’s not broken down, lactic acid can cause pain in the bones. [B] If it’s not broken down, lactic acid can cause the muscles to become more alkaline. [C] There are no disadvantages of having lactic acid in the body. [D] If it is not broken down, lactic acid can cause pain in muscles and muscle cramps. [E] If it is not broken down, lactic acid can change the shape of red blood cells.

01:55

Video Transcript

Which of the following is a disadvantage of having lactic acid in the body? (A) If it’s not broken down, lactic acid can cause pain in the bones. (B) If it’s not broken down, lactic acid can cause the muscles to become more alkaline. (C) There are no disadvantages of having lactic acid in the body. (D) If it is not broken down, lactic acid can cause pain in muscles and muscle cramps. (E) If it is not broken down, lactic acid can change the shape of red blood cells.

We are asked in this question about lactic acid. Lactic acid is a waste product of anaerobic respiration in animal cells. Anaerobic respiration is the body’s backup system for cellular respiration when inhalation cannot meet the muscle cells’ requirements for oxygen. This process does have some disadvantages, one of which is the accumulation of lactic acid in the body as a by-product of this reaction.

But why is it a disadvantage to have a buildup of this acid in the body? Well, some scientists suggest that the buildup of lactic acid is what causes pain during and after strenuous activity. This occurs at the site of lactic acid production, the muscles. Lactic acid can eventually be removed from the system by a reaction with oxygen, which forms carbon dioxide and water.

So one of the disadvantages of anaerobic respiration in humans is that it produces lactic acid, which has the effect of causing pain in the muscles. Therefore, the correct answer to the question is (D). If it is not broken down, lactic acid can cause pain in muscles and muscle cramps.

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.