Action potentials are propagated in a one-way direction down a neuron plasma membrane because
a. the action potential is of insufficient intensity to stimulate the voltage-gated ion channels
behind it.
b. the adjacent channels upstream from the action potential are ligand-gated.
c. the adjacent channels upstream from the action potential are in their refractory period.
d. voltage-gated ion channels are suppressed.
e. the adjacent channels upstream from the action potential are at their threshold potential.
C
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Assume that you are told that a particular organism, Drosophila, has the XO chromosome complement. You are also told that the autosomal complement is a normal 2n. You know that in humans the XO complement is female determining
Would you be correct in assuming that the Drosophila sex for XO is also female? Choose the answer that includes the correct explanation.
Phagocytes are both mobile and found in fixed locations throughout the body
Indicate whether the statement is true or false
The greatest natural threat to newly hatched sea turtles is
A) beach development. B) predation by native species. C) drowning. D) ecotourism. E) polluted ocean waters.
The gene associated with aggressive behavior in different studies is called _____________________
Fill in the blank(s) with correct word