Muscular System AP Biology Post Quiz

10 Questions  I  By Dwiegand on March 12, 2008
AP biology muscular system post quiz

  
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Question Excerpt

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1.  Muscle cells are stimulated by neurotransmitters released from the tips of:
A.
B.
C.
D.
E.
2.  All of the following are involved in the contraction of a muscle EXCEPT:
A.
B.
C.
D.
E.
3.  When an organism dies, its muscles remain in a contracted state termed rigor mortis for a brief period of time. Which of the following most directly contributes to this phenomenon?
A.
B.
C.
D.
E.
4.  Which of the following does not form part of the actin filament of a muscle cell?
A.
B.
C.
D.
E.
5.  Which of the following is the last step leading up to muscle contraction that occurs just before a myofibril contracts
A.
B.
C.
D.
E.
6.  What is the role of calcium in muscle contractions?
A.
B.
C.
D.
E.
7.  During muscle contraction, the ion that leaks out of the sarcoplasmic reticulum and induces myofibrils to contract is
A.
B.
C.
D.
E.
8.  1. Tropomyosin shifts and unblocks the cross-bridge binding sites. 2. Calcium is released and binds to troponin. 3. Transverse tubules depolarize the sarcoplasmic reticulum. 4. The thin filaments are ratcheted across the thick filaments by the heads of the myosin molecules and ATP. 5. An action potential in a motor neuron causes the axon to release acetylcholine, which depolarizes the muscle cell membrane. For the events listed above, which of the following is the correct sequence for their occurrence during the excitation and contraction of a muscle cell?
A.
B.
C.
D.
E.
9.  Which type of muscle is responsible for peristalsis along the digestive tract?
A.
B.
C.
D.
E.
10.  What structural feature contributes most to the diverse adaptations for animal movement?
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