Briefly describe the sequence of events that take place in muscle contraction. What will be an ideal response?


Concepts to Consider: Motor neuron releases acetylcholine; depolarization of membrane
and T tubules; calcium released from sarcoplasmic reticulum and binds to troponin, causing
conformational change; pushes tropomyosin away from active sites on actin filaments; ATP
is split and myosin heads bind to actin, forming cross bridge; ADP and phosphate are
released; cross bridge flexes and filaments slide past each other; actin-myosin complex binds
ATP and complex disassembles.

Biology & Microbiology

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In the Fite method, the organisms stain:

a) red b) blue c) green d) black

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Which of the following bones is unpaired?

What will be an ideal response?

Biology & Microbiology