When two excitatory postsynaptic potentials (EPSPs) occur at a single synapse so rapidly in succession that the postsynaptic neuron's membrane potential has not returned to the resting potential before the second EPSP arrives,
the EPSPs add together producing _____.
A) temporal summation
B) spatial summation
C) tetanus
D) the refractory state
E) an action potential with an abnormally high peak of depolarization
Answer: A
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Imagine you have extracted myosin molecules from both fast and slow twitch muscle fibers and are measuring the rate at which these proteins hydrolyze ATP. What would these relative rates of ATP hydrolysis be?
A. fast twitch fiber > slow twitch fiber B. slow twitch fiber > fast twitch fiber C. slow twitch fiber = fast twitch fiber
HIV inserts its genome into the host cell's DNA
a. True b. False
A bacteriophage transfers a random fragment of DNA of the previous host to the current host. This is an example of
A. the creation of an Hfr cell. B. generalized transduction. C. conjugation. D. specialized transduction.
Pre-cancerous and even early cervical cancer
a. can be removed if detected early enough. b. may be caused by HPV, a type of papillomavirus. c. can be detected by Pap tests. d. can be prevented with a vaccine. e. include all of these.