which statement about cellular respiration is true?\nit produces oxygen.\nit requires water.\nit is used by…

Answer:

C. It is used by every living cell.

Brief Explanations:

Cellular respiration is a fundamental process. Let's analyze each option:

• Option A: Cellular respiration consumes oxygen, not produces it. Photosynthesis produces oxygen.
• Option B: While water can be involved in some metabolic processes related to cellular respiration (like in the electron - transport chain in a minor way), it is not a primary requirement in the sense that the core reactions (glycolysis, Krebs cycle, electron - transport chain) do not have water as a necessary reactant in the same way as glucose and oxygen.
• Option C: Every living cell needs energy, and cellular respiration is the process by which cells break down organic molecules (such as glucose) to release energy in the form of ATP. Whether it is a prokaryotic cell (using anaerobic or aerobic respiration depending on the species) or a eukaryotic cell (using aerobic respiration in most cases), cellular respiration occurs.
• Option D: Cellular respiration converts food (organic molecules like glucose) into energy (ATP), not the other way around.