Question

Which of the following are general principles of metabolism?

Select one:

a. Fuels are degraded and large molecules are constructed step by step in a series of linked reactions

b. An energy currency common to all life forms, ATP, links energy-releasing pathways with energy-requiring pathways

c. The oxidation of carbon fuels powers the formation of ATP

d. Although there are many metabolic pathways, a limited number of types of reactions and particular intermediates are common to many pathways

e. All of the answers are correct

f. None of the answers are correct

The answer is not d

Answer 1

Option b is the correct answer.

Metabolism is defined as the sum of total chemical reactions occurs in the body of an organism. Metabolism is divided into two categories: Anaboliam and catabolism. Anabolism is the process of formation of complex molecules required for the cells. Catabolism is the process of breaking down of complex molecules to releases energy in the form of ATP. The energy required for anabolic process is supplied from the energy released by catabolic process. Thus, ATP links energy releasing pathway to energy requiring pathways. Since catabolism is also the part of metabolism, option a is not correct. Statement in the option c is correct but this is not the general principles of metabolism.