Energy Currency in Biological Systems Quiz

Test your knowledge on ATP, cellular respiration, and photosynthesis. Take the quiz now!

#1

What is the primary energy currency in biological systems?

ATP
DNA
RNA
NADH
#2

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

Glycolysis
Citric acid cycle
Electron transport chain
Pyruvate oxidation
#3

During which stage of cellular respiration is carbon dioxide produced?

Glycolysis
Citric acid cycle
Electron transport chain
Pyruvate oxidation
#4

Which molecule serves as an immediate source of energy for muscle contraction?

Glucose
ATP
NADH
FADH2
#5

During the Calvin cycle of photosynthesis, what is the initial acceptor of CO2?

Oxygen
Ribulose-1,5-bisphosphate (RuBP)
Glucose
Pyruvate
#6

In which cellular organelle is ATP produced through oxidative phosphorylation?

Mitochondria
Nucleus
Endoplasmic reticulum
Golgi apparatus
#7

What is the chemical formula of ATP (adenosine triphosphate)?

C6H12O6
C5H10O5
C10H16N5O13P3
C20H25N5O13P2
#8

Which enzyme is responsible for the synthesis of ATP during chemiosmosis in mitochondria?

ATP synthase
DNA polymerase
RNA polymerase
Hexokinase
#9

What is the energy source for the phosphorylation of ADP to form ATP during photosynthesis?

Sunlight
Glucose
Oxygen
Carbon dioxide
#10

Which molecule carries high-energy electrons to the electron transport chain during glycolysis?

NADH
FADH2
ATP
Pyruvate
#11

During cellular respiration, which molecule is oxidized to produce ATP?

Glucose
Oxygen
Water
Carbon dioxide
#12

What is the role of NADH in cellular respiration?

To donate electrons in the electron transport chain
To accept electrons in glycolysis
To store energy in the form of glucose
To synthesize ATP directly
#13

Which of the following processes involves the conversion of light energy into chemical energy in the form of ATP?

Glycolysis
Krebs cycle
Photosynthesis
Fermentation
#14

What is the primary function of coenzyme Q in the electron transport chain?

Accepting electrons from NADH
Donating electrons to oxygen
Pumping protons across the inner mitochondrial membrane
Synthesizing ATP directly
#15

What is the primary function of FADH2 in cellular respiration?

Donating electrons to oxygen
Accepting electrons from NADH
Acting as a cofactor in glycolysis
Pumping protons across the inner mitochondrial membrane

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