Question 1

The following reaction is exergonic.

Accepted Answer

The given reaction being exergonic implies that it releases energy. Hence, the reaction will proceed spontaneously in the forward direction, indicating a negative change in free energy (∆G < 0). Thus, the answer is option A.

Question 2

The site at which ATP is synthesized is the ribosome.

Accepted Answer

The site at which ATP is synthesized is not the ribosome, but rather the mitochondria or chloroplasts (in plants).

Question 3

Because many amino acids,fatty acids and carbohydrates are considered essential,we must be careful to eat an ample quantity of each on a daily basis.

Accepted Answer

While certain amino acids and fatty acids are considered essential because the body cannot synthesize them, carbohydrates are not classified as essential nutrients since the body can generate glucose through gluconeogenesis from other substrates.

Question 4

FAD and NADH are oxidizing agents.

Accepted Answer

FAD and NADH are reducing agents, not oxidizing agents. They donate electrons to other molecules and get oxidized themselves, becoming FADH2 and NAD+.

Question 5

While the average U.S.diet is higher than recommended in total fats,this can be compensated for by increasing portions of both protein and carbohydrates,resulting in a healthy diet.

Accepted Answer

Compensating for a high intake of fats by increasing the portions of protein and carbohydrates may not necessarily result in a healthy diet as the quality and sources of each macronutrient matter. It is important to follow balanced dietary guidelines and choose healthy sources of fats, carbohydrates, and proteins to maintain optimal health.

Question 6

Consuming vitamin water is not a cost effective way of supplementing vitamins in ones diet.

Accepted Answer

Vitamin water is often more expensive than plain water and the amount of vitamins it provides may not be significant enough to justify the cost. It is usually more cost-effective to obtain vitamins from a balanced diet or a daily multivitamin supplement.

Question 7

The following reaction would occur during catabolism.

Accepted Answer

Catabolism refers to the process of breaking down larger molecules into smaller ones, typically involving the release of energy. Therefore, a reaction would occur during catabolism.

Question 8

The Federal government has experimented with a number of way to assist people in eating healthy.The current approach is to arrange food groups in the shape of a plate.

Accepted Answer

The current approach of arranging food groups in the shape of a plate is called MyPlate, which was introduced by the United States Department of Agriculture (USDA) in 2011.

Question 9

The function of the citric acid cycle is to build up the stores of energy in a form that living things can use.

Accepted Answer

The citric acid cycle, also known as the Krebs cycle, is a process that occurs in the mitochondria of cells and is responsible for producing energy in the form of ATP (adenosine triphosphate) through the breakdown of glucose and other molecules. The cycle involves a series of chemical reactions that ultimately produce high-energy molecules, which are then used by cells to carry out various functions. Therefore, the function of the citric acid cycle is indeed to build up the stores of energy in a form that living things can use.

Quiz 22: Nutrition and Energy for Life