
Muscle Contraction Quiz

Interactive Video
•
Biology
•
10th - 12th Grade
•
Hard
Jennifer Brown
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What initiates the muscle contraction process?
A signal from the brain
A signal from the heart
A signal from the lungs
A signal from the stomach
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What neurotransmitter is released at the neuromuscular junction?
GABA
Acetylcholine
Serotonin
Dopamine
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when acetylcholine binds to its receptors on the muscle fiber?
Chloride ions enter the muscle fiber
Calcium ions enter the muscle fiber
Sodium ions enter the muscle fiber
Potassium ions enter the muscle fiber
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of calcium ions in muscle contraction?
They bind to actin
They bind to tropomyosin
They bind to troponin
They bind to myosin
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What structural change occurs when calcium binds to troponin?
Troponin is removed from the actin filament
Troponin covers the actin filament
Tropomyosin is removed from the myosin binding site
Tropomyosin covers the myosin binding site
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