Which of the following is true about protein as an energy source? select one: a. protein is more important than carbohydrate as an energy source for muscular activity. b. the use of protein as an energy source is greater for endurance athletes than for those who body build or lift weights. c. protein and amino acid supplements are needed as energy sources for weight lifters. d. protein is a good energy source, supplying 7 kcal per gram.

b. The use of protein as an energy source is greater for endurance atheletes than those who body build or lift weights.

Explanation:

Proteins are the biomolecules. They are composed of polymers of amino acids. It is required by the body to repair tissues and build muscles, bones, and necessary component of skin, and cartilage.

The body of athletes require more protein than body builder or weight lifters. This is because during athletic practices like running, swimming and others the muscular mass should be strong enough to conduct long continous practice. The muscle mass is build up by proteins. The muscles may experience lack of oxygen during regular practice and may become weak. Thus require more protein so that the strength may remain maintained.

b. The use of protein as an energy source is greater for endurance athletes than for those who body build or lift weights.

Explanation:

Proteins are macromolecules that serves as a source of nutrients for the body. They are obtained from foods such as milk, cheese, egg, chicken, meat, legumes( Beans, lentils).

The functions of proteins include the building up of the muscular structure of the body as well as the repair of old and worn out tissues in the body.

The use of protein as an energy source is greater for endurance athletes than for those who body build or lift weights and this is because proteins when consumed and digested are broken down into amino acids which serves as a source of energy when the carbohydrate( glycogen ) stores of energy in the body are depleted due to endurance trainings of exercise.

Proteins have been found to contain Branched Chain Amino Acids which are known to be very essential and important in the repair of worn out and damage tissues during endurance trainings or exercise.

Endurance Athletes are known to have very lean muscles and Branched Chained Amino Acids help in the building up of lean muscles.

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