Question

1. during cellular respiration, an organism’s cells break down glucose to provide energy for life activities. which of these substances is also produced during cellular respiration?

carbon dioxide oxygen fat protein

1. during cellular respiration, cells break down food to release energy. during photosynthesis, cells produce food in the form of glucose. what is one difference between these two processes?

cellular respiration uses oxygen and photosynthesis produces oxygen.
cellular respiration uses carbon dioxide and photosynthesis does not.
cellular respiration produces oxygen and photosynthesis does not.
photosynthesis produces more glucose than cellular respiration does.

Explanation:

Question 2

Cellular respiration is the process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water. The chemical equation for cellular respiration is \(C_6H_{12}O_6 + 6O_2
ightarrow6CO_2 + 6H_2O+\text{Energy}\). So, carbon dioxide is a by - product of cellular respiration. Oxygen is consumed in cellular respiration, not produced. Fat and protein are not direct products of the basic glucose - based cellular respiration process.

• For cellular respiration: The equation is \(C_6H_{12}O_6 + 6O_2

ightarrow6CO_2 + 6H_2O+\text{Energy}\), so it uses oxygen.

• For photosynthesis: The equation is \(6CO_2+6H_2O

ightarrow C_6H_{12}O_6 + 6O_2\), so it produces oxygen.

• Cellular respiration produces carbon dioxide (not uses it in the basic glucose - based process) and photosynthesis uses carbon dioxide. Cellular respiration consumes oxygen, not produces it. Photosynthesis produces glucose, and cellular respiration breaks down glucose.

Answer:

Carbon dioxide

Question 3