The diagram shows an animal cell. Which letter marks the location where carbon dioxide is
produced during respiration?
Y
w
ΟΥ
O Z
N
w
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X  

Explanation:

Assume your diagram is like the one below.

X represents a mitochondrion.

That's where the Tricarboxylic Acid Cycle converts a single glucose molecule into six molecules of CO₂.

W is wrong. It represents a vacuole, which can store both nutrients and waste products for later elimination.

Y is wrong. It represents the nucleolus, which plays a critical role in the synthesis of ribosomes.  

Z is wrong. It represents the cytoplasm, which is where cell processes like glycolysis and protein synthesis take place.

i would say b

explanation:

but i think i would need more information than that

the answers would be

the first one and the second one