An abrupt reversal in the electric gradient across the neuron plasma membrane is called a(n):
a. resting potential
b. membrane potential
c. action potential
d. ion concentration gradient
e. electrochemical signal
c
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The first primates known for their extensive use of tools were
A) Homo habilis. B) Homo erectus. C) Homo afarensis. D) Homo sapiens.
The "big bang" refers to
a. an event marking the beginning of the universe. b. the extinction of the dinosaurs. c. the inevitable end of the universe. d. the collision of the first galaxies forming the universe as it is today. e. the inevitable death of large stars
Osteogenic cells
What will be an ideal response?
In a population of 10,000 individuals, in which 3600 are MM, 1600 are NN, and 4800 are MN, what are the frequencies of the M alleles and the N alleles?
What will be an ideal response?