hotosynthesis and cellular respiration both involve the use and release of gases. Which statement correctly identifies the role of gases in the two processes?
a
Photosynthesis and cellular respiration both use oxygen and release carbon dioxide.
b
Photosynthesis and cellular respiration both use carbon dioxide and release oxygen.
c
Cellular respiration uses oxygen and releases carbon dioxide, while photosynthesis uses carbon dioxide and releases oxygen.
d
Cellular respiration uses carbon dioxide and releases oxygen, while photosynthesis uses oxygen and releases carbon dioxid
c
Cellular respiration uses oxygen and releases carbon dioxide, while photosynthesis uses carbon dioxide and releases oxygen.
The correct statement that identifies the role of gases in photosynthesis and cellular respiration is:
c) Cellular respiration uses oxygen and releases carbon dioxide, while photosynthesis uses carbon dioxide and releases oxygen.
To determine the correct answer, we need to understand the processes of photosynthesis and cellular respiration and their relationship with gases.
Photosynthesis is a process that occurs in plants and some microorganisms. It involves the conversion of light energy into chemical energy in the form of glucose. In this process, carbon dioxide and water are used as raw materials, and oxygen is released as a byproduct. The chemical equation for photosynthesis is:
6CO2 + 6H2O + light energy → C6H12O6 + 6O2
On the other hand, cellular respiration is a process that occurs in all living cells, including plants and animals. It involves the breakdown of glucose to release energy for cellular activities. In this process, oxygen is used to break down glucose, and carbon dioxide and water are released as byproducts. The chemical equation for cellular respiration is:
C6H12O6 + 6O2 → 6CO2 + 6H2O + energy
Now let's analyze the answer choices:
a) "Photosynthesis and cellular respiration both use oxygen and release carbon dioxide." This statement is incorrect because photosynthesis actually releases oxygen, while cellular respiration uses oxygen.
b) "Photosynthesis and cellular respiration both use carbon dioxide and release oxygen." This statement is also incorrect because photosynthesis uses carbon dioxide and releases oxygen, while cellular respiration uses oxygen and releases carbon dioxide.
c) "Cellular respiration uses oxygen and releases carbon dioxide, while photosynthesis uses carbon dioxide and releases oxygen." This statement correctly identifies the role of gases in the two processes. In cellular respiration, oxygen is used and carbon dioxide is released, while in photosynthesis, carbon dioxide is used and oxygen is released.
d) "Cellular respiration uses carbon dioxide and releases oxygen, while photosynthesis uses oxygen and releases carbon dioxide." This statement is incorrect because cellular respiration uses oxygen and releases carbon dioxide, while photosynthesis uses carbon dioxide and releases oxygen.
Therefore, the correct answer is c) Cellular respiration uses oxygen and releases carbon dioxide, while photosynthesis uses carbon dioxide and releases oxygen.