Question

The advantage to the cell of the gradual oxidation of glucose during cellular respiration compared with its combustion to CO₂ and H₂O in a single step is _________
a. energy can be extracted in usable amounts.
b. more free energy is released for a given amount of glucose oxidized.
c. less O₂ is required for a given amount of glucose oxidized.
d. more CO₂ is produced for a given amount of glucose oxidized.
e. no energy is lost as heat.

Answer 1

Answer:

The correct answer is a. energy can be extracted in usable amounts.

Explanation:

Through the process of respiration, glucose is converted into carbon dioxide and water. This oxidation of glucose helps in the production of energy in usable amount which is used by the cell for their metabolic processes.

First, the glucose is partially oxidized to pyruvic acid then pyruvic acid is converted into acetyl Co-A which is used in the citric acid cycle to generate NADH, FADH₂, and ATP. Then the NADH, FADH₂ is used to provide electrons that helps in the generation of ATP through oxidative phosphorylation.

This ATP molecule has a high energy phosphate bond from which energy can be extracted in usable amounts. Therefore the correct answer is a. energy can be extracted in usable amounts.

Answer 2

Answer:

Option a

Explanation:

The progressive oxidation of glucose enables the cell to acquire the vitality from the procedure at a more slow yet increasingly usable rate. On the off chance that glucose were to legitimately experience burning inside the cell, the arrival of vitality would be too unexpected and a large portion of it would be lost as warmth (or harm the cell).