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Energy Production and Recycling in Cellular Processes Quiz

#1

Which molecule is considered as the primary energy carrier in cells?

ATP
Explanation

ATP is the primary energy carrier in cells, providing energy for various cellular processes.

#2

What is the primary function of chlorophyll in photosynthesis?

To capture sunlight
Explanation

Chlorophyll absorbs light energy and initiates the process of photosynthesis by converting light energy into chemical energy.

#3

Which process involves the conversion of light energy into chemical energy?

Photosynthesis
Explanation

Photosynthesis converts light energy into chemical energy stored in the bonds of organic molecules, such as glucose.

#4

What process is responsible for the production of ATP in cellular respiration?

Electron transport chain
Explanation

The electron transport chain is responsible for generating ATP during cellular respiration through oxidative phosphorylation.

#5

Which organelle is primarily responsible for ATP production in eukaryotic cells?

Mitochondria
Explanation

Mitochondria are the organelles responsible for ATP production through aerobic respiration in eukaryotic cells.

#6

What is the term for the process of breaking down glucose into pyruvate?

Glycolysis
Explanation

Glycolysis is the metabolic pathway that breaks down glucose into pyruvate, producing ATP and NADH.

#7

Which of the following is NOT a product of the light-dependent reactions in photosynthesis?

Glucose
Explanation

Glucose is not produced in the light-dependent reactions; it's synthesized in the light-independent reactions (Calvin cycle).

#8

Which of the following processes is involved in the recycling of molecules in cells?

Autophagy
Explanation

Autophagy is a cellular process responsible for degrading and recycling unnecessary or dysfunctional cellular components.

#9

Which molecule is often recycled in the process of cellular respiration?

NADH
Explanation

NADH is recycled in cellular respiration as it is oxidized back to NAD+ during the electron transport chain.

#10

What is the final electron acceptor in the electron transport chain during cellular respiration in aerobic organisms?

Oxygen
Explanation

Oxygen serves as the final electron acceptor in aerobic cellular respiration, forming water.

#11

Which molecule serves as the initial substrate for the Krebs cycle?

Acetyl-CoA
Explanation

Acetyl-CoA combines with oxaloacetate to form citrate, initiating the Krebs cycle.

#12

Which molecule is reduced to form NADPH during the light-dependent reactions of photosynthesis?

NADP+
Explanation

NADP+ is reduced to form NADPH during the light-dependent reactions, carrying high-energy electrons for biosynthetic processes.

#13

What is the primary function of the ATP synthase enzyme in cellular respiration?

To produce ATP
Explanation

ATP synthase facilitates the synthesis of ATP from ADP and inorganic phosphate during oxidative phosphorylation.

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