BIO 124 Exam Quizes

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Question I1
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What Ineuromuscular Itransmitter Iis Ireleased Ifrom Ithe Iaxon Iterminals?

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a. Lactic Iacid



b. Acetylcholine I



c. Creatine Iphosphate



d. Calcium Iions



e. ATP



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The Icorrect Ianswer Iis: IAcetylcholine

Question I2
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What Idoes I"d" Irepresent Iin Ithe Icomponents Iof Ia Imuscle Icell Ifigure?

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a. A Isarcomere I



b. The Isarcoplasm



c. A Imyofibril



d. The Isarcoplasmic Ireticulum

, e. The Isarcolemma



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The Icorrect Ianswer Iis: IA Isarcomere

Question I3
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_ I(blank) I_ Iare Ibone-forming Icells.

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a. Chondrocytes



b. Chondroclasts



c. Osteoclasts



d. Osteocytes



e. Osteoblasts I

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The Icorrect Ianswer Iis: IOsteoblasts

Question I4
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What Icorrectly Idescribes Ithe Imovements Iof Iactin Iand Imyosin Ifibers?

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a. Binding Iwith IATP Ishortens Ithe Imuscle Ifiber; Ireverse Ibinding Ielongates Ithe Ifiber



b. The Ienergy Ifrom Ibreaking Idown IATP Ito IADP I+ IP Iis Iused Ito Iconvert Iactin Iinto Imyosin



c. The Icalcium Iions Iare Iused Ias Ienergy Ito Isplit IATP Ito Ishorten Ithe Ifiber



d. When IADP Iand IP Icome Ioff Imyosin, Ithe Icrossbridges Imove Ithe Iactin Ifilaments Ito Ishorten Ithe



muscle Ifiber I

e. Actin Ifilament Iheads Ibreak Idown IATP Iand Ithen Iattach Ito Ia Imyosin Ifilament Ito Iform Icross-bridges



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