Student response value a cells b c d e feedback 0 100

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Unformatted text preview: ent performed called _____. Student Response A. uniaxial, circumduction B. uniaxial, rotation 0% 100% C. biaxial, circumduction D. biaxial, rotation 0% 0% Score: Value 0.5/0.5 9. Uptake of ATP by myosin heads. Which event is required for detachment of the crossbridges? Feedback Student Response A. Calcium ions enter the axon B. Calcium ions are pumped back into the sarcoplasmic reticulum. C. Acetylcholine is released into the synaptic cleft by exocytosis. D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. E. Na+ moves across the sarcolemma into the muscle cell. F. Breakdown of ACh by AChase. G. Opening of the voltage-gated sodium channels. H. Opening of potassium channels. I. The troponin-tropomyosin complex shifts, exposing the active sites on actin. J. Uptake of ATP by the myosin heads. K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. Score: Value Feedback 0% 0% 0% 0% 0% 0% 0% 0% 0% 100% 0% 0.5/0.5 10. Positive feedback A process which requires rapid response will usually utilize: Student Response A. Negative feedback B. Positive feedback 0% 100% C. Neural controls D. Hormonal Controls 0% 0% Score: Value Feedback 0.5/0.5 11. voltage-gated ion channels Threshold depolarization will result in an action potential when it occurs at: Student Response A. chemically-gated ion channels only B. voltage-gated ion channels only Value 0% 100% C. Both chemically-gated and voltage-gated ion channels. D. The receptive region. 0% Score: 12. 0.5/0.5 0% Feedback Binding of the ACh to the post-synaptic receptors. What event causes opening of the chemically-gated Na+ channels? Student Response A. Calcium ions enter the axon B. Calcium ions are pumped back into the sarcoplasmic reticulum. C. Acetylcholine is released into the synaptic cleft by exocytosis. D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. E. Na+ moves across the sarcolemma into the muscle cell. F. Breakdown of ACh by AChase. G. Opening of the voltage-gated sodium channels. H. Opening of potassium channels. I. Binding of calcium ions to Troponin C. J. Uptake of ATP by the myosin heads. K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. Score: Value Feedback 0% 0% 0% 100% 0% 0% 0% 0% 0% 0% 0% 0.5/0.5 14. Shifting of the troponin-tropomyosin complex. As a direct result of Ca+2 binding to troponin: Student Response A. Calcium ions enter the axon B. Calcium ions are pumped back into the sarcoplasmic reticulum. C. Acetylcholine is released into the synaptic cleft by exocytosis. D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. E. Na+ moves across the sarcolemma into the muscle cell. F. Breakdown of ACh by AChase. G. Opening of the voltage-gated sodium channels. H. Opening of potassium channels. I. The troponin-tropomyosin complex shifts, exposing the active sites on actin. J. Uptake of ATP by the myosin heads. K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. Score: 15. 0.5...
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This note was uploaded on 01/29/2013 for the course BIOL 239 taught by Professor Swan during the Fall '12 term at New Mexico.

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