Muscle Contraction
Authored by Darria Townsend
Science
12th Grade
Used 344+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is necessary for the myosin to release the actin?
ATP
Calcium
ADP
Sodium
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a crossbridge?
Where myosin binds to actin
Where the calcium crosses into the cytoplasm
Where calcium binds with troponin
Where titin and myosin are connected
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When a muscle is in a contracted position, what is the relationship between actin filaments?
They are on top of one another
They are beside each other
They are close to each other
They are far apart from each other
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When a muscle is relaxed and in a lengthened position, what is the relationship between actin filaments?
They are on top of one another
They are beside each other
They are close to each other
They are far apart from each other
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What two chemicals are necessary for muscle contraction to occur?
Niacin and Potassium
Calcium and ATP
Sodium and Potassium
Acetylcholine and Potassium
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Skeletal Muscle contraction is initiated when the ________ sends a message to the muscle cell.
Muscle cell
Gland
Neuron
None of the above
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The neurotransmitter that signals muscle contraction is...
Calcium
Actin
Myosin
Ach (acetylcholine)
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