Question

Which of the following is (are) true for anabolic pathways?

a. They do not depend on enzymes.
b. They are highly regulated sequences of chemical reactions.
c. They consume energy to build up polymers from monomers.
d. They release energy as they degrade polymers to monomers.
e. both B and C

Answer 1

The true statements about anabolic pathways are that they are highly regulated sequences of chemical reactions (B) and they consume energy to build up polymers from monomers (C). Anabolic pathways crucially rely on enzymes and energy, typically ATP or NADH.

Step-by-step explanation:

The correct answers are e. both B and C. Anabolic pathways are highly regulated sequences of chemical reactions and they consume energy to build up polymers from monomers. Anabolic pathways require an input of energy to synthesize complex molecules from simpler ones, examples of which include the synthesis of sugars, large proteins from amino acids, and new DNA strands from nucleic acid building blocks.

These processes are critical for the life of the cell and are driven by energy provided by ATP and other high-energy molecules like NADH. Despite being energized by ATP, these pathways still depend on enzymes to catalyze the reactions. Contrary to anabolic pathways, catabolic pathways release energy by breaking down polymers into monomers.