Question

Usian Bolt, an Olympic runner, at the end of a 100 meter sprint, will have more of which of the following in his muscles?
A. ATP
B. Pyruvic acid
C. Lactic acid
D. Carbon dioxide

Answer 1

Muscle is a soft tissue that is found in most of the animals. The function of the muscles is to produce force and motion. Muscle cells contain protein filaments of actin and myosin that slide past one another and produce a contraction that changes both the length and the shape of the cell.

Complete Answer:
- Our body needs energy for doing any kind of work. This energy is produced by the breakdown of glucose molecules into the carbon dioxide, water and energy in the aerobic conditions or in the presence of oxygen.
- At the end of a 100m sprint, Usian Bolt who is an Olympic runner will have more lactic acid in his muscles. This is because at the time of running our body needs more energy.
- And there is not enough oxygen present in the body to convert the glucose into the energy.
- So, when there is insufficient oxygen present in the body, the muscle cells break down the glucose molecule without oxygen or anaerobically into the lactic acid and energy.
- The buildup of lactic acid in the body causes muscle cramps.
- The buildup of lactic acid is a harmless process and the produced lactic acid will go away on its own.

Hence, option C is the correct option for this question.

Note: Muscles are responsible for the maintaining and changing posture of the body, locomotion as well as movement of internal organs such as contraction of heart, movement of food through the alimentary canal, etc. Muscle tissues are derived from the mesodermal layer of embryonic germ cells.