Chapter 8, Problem 1MCQ

Summary Introduction

Introduction:

The organisms acquire energy by consuming food and converting it into smaller particles and generate energy. The energy is used further for the construction of other biomolecules for building body with the help of smaller biomolecules

Answer to Problem 1MCQ

Correct answer:

Catabolism is a form of metabolism in which large molecules are converted into smallmolecules. Therefore, option (a) is correct.

Option (a) is given as “large, small”.

Explanation of Solution

Justify reasonfor the correct statement:

Catabolism refers to all the destructive processes of the body in which energy is released. Complex molecules are broken down into simpler in catabolism process. Catabolic exercises are associated with burning calorie.

Hence, option (a) is correct.

Justify reasons for the incorrect statements:

Option (b) is given as “small, large”.

Anabolism refers to all the synthesis processes of the body, in which energy is used to make building blocks of the body. Hence, it is a wrong answer.

Option (c) is given as “amino acids, protein”.

The sequence of amino acids joined together by peptide bonds and form a protein molecule. Hence, it is a wrong answer.

Option (d) is given as “food, storage”.

Body stores food by the process of glycogenesis and fatty acid synthesis. Hence, it is a wrong answer.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

Catabolism refers to the sum total of all destructive processes that release energy, whereas anabolism refers to the sum total of all building processes that require energy. Catabolism and anabolism are the two processes that together constitute metabolism of a body.