Cellular Energy Production and Metabolism Quiz

Test your knowledge on cellular energy production and metabolism with questions covering glycolysis, Krebs cycle, electron transport chain, and more.

#1

Which organelle is responsible for the production of ATP in eukaryotic cells?

Endoplasmic reticulum
Golgi apparatus
Mitochondrion
Nucleus
#2

What is the primary function of glycolysis in cellular respiration?

Production of carbon dioxide
Generation of ATP
Formation of pyruvate
Oxidation of glucose
#3

Which metabolic pathway is common to both cellular respiration and fermentation?

Glycolysis
Citric acid cycle
Oxidative phosphorylation
Pyruvate decarboxylation
#4

In which phase of cellular respiration does substrate-level phosphorylation occur?

Glycolysis
Citric acid cycle
Oxidative phosphorylation
Pyruvate decarboxylation
#5

During glycolysis, glucose is ultimately converted into which molecule?

Pyruvate
Acetyl-CoA
Citrate
Lactate
#6

In which cellular compartment does the citric acid cycle (Krebs cycle) take place?

Cytosol
Mitochondrial matrix
Endoplasmic reticulum
Nuclear envelope
#7

What is the net gain of ATP molecules produced in one round of cellular respiration from a single glucose molecule?

2
4
30
36
#8

What is the primary purpose of the electron transport chain in cellular respiration?

Production of ATP
Formation of pyruvate
Glycolysis
Oxidative phosphorylation
#9

Which enzyme catalyzes the rate-limiting step of glycolysis?

Hexokinase
Phosphofructokinase-1
Glyceraldehyde-3-phosphate dehydrogenase
Pyruvate kinase
#10

In which step of glycolysis is ATP consumed?

Hexokinase
Phosphofructokinase-1
Glyceraldehyde-3-phosphate dehydrogenase
Pyruvate kinase
#11

What is the primary function of the light-independent reactions (Calvin cycle) in photosynthesis?

Production of ATP
Fixation of carbon dioxide
Absorption of light energy
Formation of glucose
#12

Which electron carrier is reduced during the light-dependent reactions of photosynthesis?

NADP+
FADH2
NAD+
ATP
#13

During cellular respiration, where does the process of oxidative phosphorylation occur?

Cytosol
Mitochondrial matrix
Inner mitochondrial membrane
Endoplasmic reticulum
#14

What is the role of coenzyme Q (ubiquinone) in the electron transport chain?

It accepts electrons from complex I
It transfers electrons to complex IV
It donates electrons to oxygen
It catalyzes ATP synthesis
#15

In which phase of cellular respiration is carbon dioxide produced?

Glycolysis
Citric acid cycle
Oxidative phosphorylation
Pyruvate decarboxylation
#16

Which molecule serves as the final electron acceptor in the electron transport chain of cellular respiration?

Oxygen
NAD+
Carbon dioxide
Water
#17

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

To oxidize NADH
To phosphorylate ADP to form ATP
To convert pyruvate to acetyl-CoA
To hydrolyze ATP into ADP and inorganic phosphate

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