Question

how are photosynthesis and cellular respiration alike?
a. they have the same root word.
b. they were discovered by the same scientist.
c. they capture their energy from the same source.
d. they can both be modeled as chemical equations.

Explanation:

• Option A: "photosynthesis" and "cellular respiration" do not have the same root word. "Photosynthesis" relates to light - driven synthesis, while "cellular respiration" is about energy release in cells, so A is incorrect.
• Option B: Photosynthesis and cellular respiration were discovered by different scientists, so B is incorrect.
• Option C: Photosynthesis captures energy from sunlight, and cellular respiration releases energy from glucose (which originally got energy from sunlight via photosynthesis in producers, but directly, they don't capture from the same source). So C is incorrect.
• Option D: Photosynthesis can be modeled as \(6CO_2 + 6H_2O+\text{light energy}

ightarrow C_6H_{12}O_6 + 6O_2\) and cellular respiration as \(C_6H_{12}O_6+6O_2
ightarrow 6CO_2 + 6H_2O+\text{energy}\). Both can be represented as chemical equations, so D is correct.

Answer:

D. They can both be modeled as chemical equations.