Muscle Contraction

Quiz
•
Other
•
9th - 12th Grade
•
Medium
Lisa Wofford
Used 2+ times
FREE Resource
12 questions
Show all answers
1.
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
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does calcium do to the actin?
Covers myosin binding sites
Uncovers myosin binding sites
Covers actin binding sites
Uncovers actin binding sites
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the name of the protein that covers the binding sites on actin?
Myosin
Titin
Troponin
Tropomyosin
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the sarcoplasmic reticulum do?
Stores sodium
Stores ATP
Releases sodium
Stores calcium
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the name of the place where a nerve meets a muscle fiber
Nerve junction
Neuromuscular junction
Muscle junction
Crossbridge
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the sarcomere shorten (contract) ?
The myosin filaments contract
The actin filaments contract
The myosin is pulled by the actin
The actin is pulled by the myosin
7.
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
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