5.2

Question 1

Give an example of an exergonic reaction being linked with an endergonic reaction and why they must occur in that order

Answer 1

An example of an exergonic reaction being linked with an endergonic reaction is the synthesis of ATP (adenosine triphosphate) in cells. The hydrolysis of ATP (exergonic) releases energy, which is then used to drive endergonic reactions such as muscle contractions. This coupling is essential because endergonic reactions require an input of energy that is provided by the exergonic reactions, ensuring a continuous flow of energy within the cell. The exergonic reaction provides the necessary energy for the endergonic reaction to occur, thereby maintaining cellular functions and processes.

Question 2

The ATP cycle

Answer 2

The ATP cycle is a fundamental process in cellular bioenergetics that involves the continuous production and utilization of adenosine triphosphate (ATP) molecules to power various cellular activities. The cycle consists of three main interconnected stages: ATP synthesis, ATP hydrolysis, and regeneration of ATP.

Question 3

Hydrolysis

Answer 3

Hydrolysis is a chemical reaction in which a compound is broken down into its constituent elements through the reaction with water molecules.

Question 4

Anabolic

Answer 4

Anabolic refers to the metabolic processes in living organisms that involve the synthesis of complex molecules from simpler ones, typically resulting in the buildup of tissue and growth.

Question 5

Catabolic

Answer 5

Catabolic processes refer to metabolic pathways that involve the breakdown of larger molecules into smaller ones, releasing energy in the process.

Question 6

Exergonic

Answer 6

relates to Catabolic

Question 7

Endergonic

Answer 7

relates to Anabolic