2. Order the atoms involved in cellular respiration from most prevalent to least.

a. C, H, OC, H, O
b. H, O, CH, O, C
c. O, H, CO, H, C
d. H, C, O

The correct order of atoms involved in cellular respiration from most prevalent to least is:

d. H, C, O

To order the atoms involved in cellular respiration from most prevalent to least, we need to determine the atoms that are present in larger quantities.

Looking at the options provided:
a. C, H, OC, H, O
b. H, O, CH, O, C
c. O, H, CO, H, C
d. H, C, O

The most prevalent atom in cellular respiration is carbon (C), followed by hydrogen (H), and oxygen (O).

Based on this, the correct order is:
d. H, C, O

Therefore, the atoms involved in cellular respiration can be ordered from most prevalent to least as: hydrogen (H), carbon (C), and oxygen (O).

To order the atoms involved in cellular respiration from most prevalent to least, we need to look at the molecular formula of glucose, which is the primary molecule used in cellular respiration. The molecular formula for glucose is C6H12O6.

Let's break down the options and see which one matches the composition of glucose:

a. C, H, OC, H, O: This option does not match the molecular formula of glucose. It incorrectly includes "OC" and has a different arrangement of atoms.

b. H, O, CH, O, C: This option also does not match the molecular formula of glucose as it includes "CH" and has a different arrangement of atoms.

c. O, H, CO, H, C: This option includes the correct atoms (C, H, O) but in the wrong order. The correct order should be C, H, O.

d. H, C, O: This option includes the correct atoms (C, H, O) and matches the order from the molecular formula of glucose (C6H12O6).

Therefore, the correct answer is d. H, C, O.