What event begins the process of repolarization following an action potential?
a. K+ channel inactivation gates close.
b. K+ channel inactivation gates open.
c. Na+ channel activation gates open.
d. Na+ channel activation gates close.
e. Na+ channel inactivation gates close.
e
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Nocardia cause biodeterioration of rubber joints in water and sewer pipes.
Answer the following statement true (T) or false (F)
Which of the following structural components
is NOT a part of a bacteriophage?
a. protein coat b. DNA c. viral envelope d. all of these ARE parts of a bacteriophage e. more than one of these is NOT a part of a bacteriophage
Some animals have no body symmetry or have __________ symmetry like spokes on a wheel. Fill in the blank(s) with the appropriate word(s)
Which of the following is TRUE of foodborne botulism?
A) It is an intoxication disorder. B) It is not a life-threatening infection even when left untreated. C) Large amounts of bacteria must be consumed to produce disease. D) Normal food preparation methods can prevent it. E) An effective vaccine is available.