AP BIOLOGY

BIOCHEMISTRY

ENZYMES AND METABOLISM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What effect does a chemical reaction that breaks down a starch molecule to produce many glucose molecules have on the entropy of the system.
A
it increases entropy
B
it decreases entropy
C
it has no effect on entropy
Explanation: 

Detailed explanation-1: -Hydrolysis increases entropy or “disorder” by breaking one molecule into two. Hydrolysis is also exergonic because it releases energy into the surroundings. These two factors combine to make Gibbs free energy, or G, negative for hydrolysis reactions.

Detailed explanation-2: -Entropy increases as temperature increases. An increase in temperature means that the particles of the substance have greater kinetic energy. The faster-moving particles have more disorder than particles that are moving slowly at a lower temperature.

Detailed explanation-3: -Entropy is a measure of the disorder of a system. Entropy also describes how much energy is not available to do work. The more disordered a system and higher the entropy, the less of a system’s energy is available to do work.

Detailed explanation-4: -Entropy always increases, because a high amount of disorder is, by definition, is more likely than a low amount of disorder.

There is 1 question to complete.