What did Alan Hodgkin and Andrew Huxley conclude from their squid axon experiments?
a. The passage of Na+ ions into a neuron and K+ ions out of a neuron results in an action potential.
b. The passage of K+ ions into a neuron and Na+ ions out of a neuron results in an action potential.
c. The passage of K+ ions into a neuron and Ca+ ions out of a neuron results in an action potential.
d. The passage of Cl- ions into a neuron and K+ ions out of a neuron results in an action potential.
e. The passage of Cl- ions into a neuron and Ca+ ions out of a neuron results in an action potential
a
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Inbreeding reduces which of the following variances to near zero?
A. Genetic variance B. Environmental variance C. Both variances D. Neither variance
Which of the following is associated with cervical cancer?
A. gonorrhea B. genital warts C. syphilis D. chancroid
An excitatory postsynaptic potential
a. is only one of several types of graded potential. b. has a hyperpolarizing effect. c. will drive the membrane away from its threshold. d. is summed with an inhibitory postsynaptic potential at the input zone of a neuron in a process known as synaptic integration. e. help keep the membrane at resting membrane potential.
The ras proto-oncogene family is a group of related genes that slow or stop the progression of cancer
a. True b. False