Question

The following table describes some aspects of the two main metabolic functions, photosynthesis and cellular respiration:

Characteristic Photosynthesis Cellular Respiration
Location within cell
Light reactions = thylakoid membrane

Calvin cycle = stroma

Both happen in X of plant cells

Glycolysis = cytoplasm

Kreb’s cycle and electron transport chain = Y

Reactants
Carbon dioxide (CO2),

Water (H2O), and

Solar Energy

Glucose (C6H12O6) and

Oxygen (O2)

Products
Glucose (C6H12O6) and

Oxygen (O2)

Carbon dioxide (CO2),

Water (H2O), and

ATP

Which answer choice identifies the missing information from the table?

(1 point)
Responses

X = chloroplasts; Y = mitochondria
X = chloroplasts; Y = mitochondria

X = mitochondria; Y = chloroplasts
X = mitochondria; Y = chloroplasts

X = Golgi apparatus; Y = nucleus
X = Golgi apparatus; Y = nucleus

X = nucleus; Y = Golgi apparatus

Answer 1

The correct answer is:

**X = chloroplasts; Y = mitochondria**

This is because photosynthesis occurs in the chloroplasts (light reactions in the thylakoid membrane and Calvin cycle in the stroma), while cellular respiration occurs in the mitochondria (glycolysis in the cytoplasm and the Krebs cycle and electron transport chain in the mitochondria).