1) Explain the basis of rigor. Where in the contraction cycle is the muscle arre
ID: 166904 • Letter: 1
Question
1) Explain the basis of rigor. Where in the contraction cycle is the muscle arrested? Why?
Drag the words on the left to the appropriate blanks on the right to complete the sentences. Not all terms will be used.
Rigor results from a failure to break the cross-bridges that link thick filaments to thin filaments in the contraction cycle. In the living cell, detachment occurs before binding of the next molecule of ATP. After death, however, the supply of cellular ATP is quickly depleted.
Answer options: break, before, thin filaments, slowly departed, increased, quickly departed, upon, form, myosin
^^ 1 of 4 blanks above are incorrect.
2) Would you be likely to go into rigor faster if you were to die while racing to class or while sitting in lecture? Explain.
Drag the words on the left to the appropriate blanks on the right to complete the sentence. Not all terms will be used.
While BLANK. Because the concentration of ATP in the cell would presumably be BLANK and cross-bridge formation would probably occur BLANK upon death.
Answer options: slower, higher, sitting in lecture, quicker, lower, running to class
3) What effect do you think the addition of ATP might have on muscles in rigor?
Drag the words on the left to the appropriate blanks on the right to complete the sentence. Terms can be used once, more than once, or not at all.
Addition of ATP will have a BLANK effect, because it will allow cross-bridges to BLANK and filaments to BLANK.
Answer options: break, relaxing, stiffening, form, connect
Explanation / Answer
1.to form the cross bridge.
2.(a) sitting in lecture
(b)higher
(c) slower.
3.(a) relaxing
(b)form
(c) connect.
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