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.
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Staphylococci are the leading cause of wound infections
Indicate whether this statement is TRUE or FALSE.
By definition, pheromones are chemical signals secreted into the bloodstream
____________________ Indicate whether the statement is true or false.
In the Fite method, the organisms stain:
a) red b) blue c) green d) black
Which of the following bones is unpaired?
What will be an ideal response?