Question

which of the following best describes reactions that require energy input?
endergonic and catabolic endergonic and anabolic
exergonic and catabolic exergonic and exothermic

Explanation:

• Endergonic reactions: These reactions absorb energy from the surroundings. The free - energy change (\(\Delta G>0\)) for endergonic reactions.
• Anabolic reactions: These are synthesis reactions that build complex molecules from simpler ones. For example, the synthesis of proteins from amino acids. Anabolic reactions require energy input as they are building up molecules, and this energy is often provided by ATP.
• Catabolic reactions: These are breakdown reactions (e.g., the breakdown of glucose in glycolysis). Catabolic reactions release energy, so they are not the ones that require energy input.
• Exergonic reactions: These reactions release energy (\(\Delta G < 0\)). Exothermic reactions are a type of exergonic reaction where the energy is released in the form of heat.

Answer:

endergonic and anabolic