During "sensitization" in Aplysia, phosphorylated K+ channels will be closed, and this activates neurotransmitter release. Which of the following is/are TRUE regarding the molecular mechanism?
a. When K+ channels are closed for a long period of time, this will prolong the period of the action potential.
b.When K+ channel are closed for a long period of time, this will shorten the period of the
action potential.
c.When there is a longer period of action potential, the level of Ca2+ influx will increase, leading to increased levels of neurotransmitter release.
d. b and c
e. a and c
Answer: e. a and c
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Which ion is required to be present in a significant quantity in order to allow myosin heads to form cross bridges with actin filaments?
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Given that DNA is the genetic material in prokaryotes and eukaryotes, what other general structures (macromolecules) and substances made by the cell are associated with the expression of that genetic material?
What will be an ideal response?
What are the steps (in the correct order) that link a change in the base sequence of a gene to a change in the phenotype of an organism like a mouse or a human?
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