Question

The amount of oxygen transported by a litre of oxygenated blood to tissues of a person undergoing severe exercise will be _____
A.150 ml
B.200 ml
C.15 ml
D.5 ml

Answer 1

Oxygen is a very important component for cells to live. Muscle cells also need oxygen to perform its activity. Oxygen binds with haemoglobin of blood and is transported to muscle cells where that oxygen binds to myoglobin for muscle activity. During severe exercise, muscle cells contract and relax rapidly and for that performance muscle cells need 15 ml of oxygen per 100 mol of blood.

Complete step by step answer:
After heavy and strenuous exercise, muscle cells consume oxygen at a faster rate than normal. The amount of oxygen transport is 150 ml as per the rate of 15 ml of oxygen per 100 ml of blood. Thus, 1000 ml will carry 15 $\times$ 10 = 150 ml.
Or, we can say 150 ml of oxygen is transported to muscle cells by 1 litre of blood.

Thus, the correct answer is option A. 150 ml.

Note:
Regular exercise helps to improve muscle strength. Muscle strength can be described as the ability of a muscle that it uses to develop a force for muscle contraction. Exercise also helps to increase the size of the muscles. Muscular endurance is also improved by regular exercise. But due to severe exercise, the muscle mass increases – this is called muscle hypertrophy. This happens mainly due to the long term effect of weight training of muscles.