Which is true about the process of photosynthesis and cellular respiration?
A.
Photosynthesis requires energy from the sun, while cellular respiration produces energy in the form of ATP.
B.
Photosynthesis takes place in the mitochondria, while cellular respiration occurs in the chloroplasts.
C.
Photosynthesis takes place in animal cells, while cellular respiration is exclusive to plant cells.
D.
Photosynthesis results in the release of carbon dioxide, while cellular respiration absorbs carbon dioxide.
The correct answer is A.
Photosynthesis requires energy from the sun, while cellular respiration produces energy in the form of ATP.
To determine which statement is true about the processes of photosynthesis and cellular respiration, let's break down each option:
A. Photosynthesis requires energy from the sun, while cellular respiration produces energy in the form of ATP.
Photosynthesis indeed requires energy from the sun. During photosynthesis, plants capture sunlight and convert it into chemical energy in the form of glucose. On the other hand, cellular respiration is the process through which cells break down glucose and convert it into energy in the form of ATP (adenosine triphosphate). Therefore, Option A is correct.
B. Photosynthesis takes place in the mitochondria, while cellular respiration occurs in the chloroplasts.
This statement is incorrect. Photosynthesis occurs in the chloroplasts of plant cells, where the pigment chlorophyll captures sunlight and performs the chemical reactions necessary for converting it into glucose. In contrast, cellular respiration takes place in the mitochondria, where glucose is broken down to produce energy.
C. Photosynthesis takes place in animal cells, while cellular respiration is exclusive to plant cells.
This statement is also incorrect. Photosynthesis is exclusive to plant cells, where chloroplasts exist. Animal cells lack chloroplasts, so they cannot perform photosynthesis. However, both plant and animal cells carry out cellular respiration to produce energy.
D. Photosynthesis results in the release of carbon dioxide, while cellular respiration absorbs carbon dioxide.
This statement is incorrect. During photosynthesis, plants take in carbon dioxide from the atmosphere and release oxygen as a byproduct. In contrast, during cellular respiration, cells consume oxygen and release carbon dioxide as a waste product.
Therefore, the correct option is A: Photosynthesis requires energy from the sun, while cellular respiration produces energy in the form of ATP.