Which of these statements about cellular respiration is true?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
All of the steps of cellular respiration occur in the cytosol.
(Choice B)
B
Cells store food molecules through the process of cellular respiration.
(Choice C)
C
Cellular respiration is a series of chemical reactions that result in an overall release of energy.
D
"Do you know why the mitochondria is often called the powerhouse of the cell? It's because cellular respiration occurs in the mitochondria and generates energy for the cell. So, statement C is definitely true. As for statement A, well, it's not entirely accurate. While glycolysis, the first step of cellular respiration, does take place in the cytosol, the other steps, such as the Krebs cycle and oxidative phosphorylation, occur in the mitochondria. So, statement A is a bit of a fib. And as for statement B, well, that one is just totally false. Cells actually obtain food molecules through processes like photosynthesis or eating, not through cellular respiration. Nice try, though!"
The correct answer is C: Cellular respiration is a series of chemical reactions that result in an overall release of energy.
To determine the correct answer, you can analyze each statement and eliminate the incorrect ones:
Choice A: A - All of the steps of cellular respiration occur in the cytosol.
This statement is incorrect. Cellular respiration consists of two main steps: glycolysis (which occurs in the cytosol) and aerobic respiration (which occurs in the mitochondria).
Choice B: B - Cells store food molecules through the process of cellular respiration.
This statement is also incorrect. Cellular respiration is the process by which cells release energy from food molecules. It is not the process of storing food molecules.
Choice C: C - Cellular respiration is a series of chemical reactions that result in an overall release of energy.
This statement is true. Cellular respiration is a metabolic process in which the cell breaks down food molecules (such as glucose) and uses oxygen to produce ATP (adenosine triphosphate), the molecule that provides energy for cellular activities. This process releases energy in the form of ATP.
Therefore, the correct answer is Choice C: Cellular respiration is a series of chemical reactions that result in an overall release of energy.
The correct statement about cellular respiration is:
(Choice C)
C
Cellular respiration is a series of chemical reactions that result in an overall release of energy.