What makes photosynthesis and cellular respiration similar?

Question

1. Both involve combinations of glucose, water, and carbon dioxide
2. Both involve light energy.
3. Both involve combinations of carbon, hydrogen, and oxygen.
4. Both involve ATP molecules

Answer 1

Photosynthesis and cellular respiration are similar in that:

3. Both involve combinations of carbon, hydrogen, and oxygen.

This is because both processes are biochemical pathways that involve these elements as they process carbon-containing molecules.

If we consider the other options:

1. Photosynthesis uses glucose, water, and carbon dioxide, while cellular respiration primarily breaks down glucose in the presence of oxygen.
2. Photosynthesis involves light energy (as it typically occurs in plants), while cellular respiration does not use light energy; it occurs in all living organisms.
3. While ATP is produced in both processes, photosynthesis generates ATP through the light-dependent reactions, while cellular respiration generates ATP through the breakdown of glucose.

So, in terms of direct similarities, option 3 is the most accurate.

Answer 2

What about the ATP molecules?