Biologists have found evidence that eukaryotic cells evolved from prokaryotic organisms by a process of intracellular ________.
Fill in the blank(s) with the appropriate word(s).
symbiosis
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A toxin interferes with the opening of Na+ channels in the postsynaptic membrane so they open more slowly when
bound to a neurotransmitter. What effect would there be on action potential formation in the postsynaptic membrane?
What will be an ideal response?What types of cells perform cell division?
a. prokaryotes only b. eukaryotes only c. both prokaryotes and eukaryotes d. neither prokaryotes, nor eukaryotes
If cell and tissue differentiation is controlled genetically, how can environmental factors play a role in determining the final phenotype?
What will be an ideal response?
Prozac is used as an antidepressant and acts by inhibiting the reuptake of which neurotransmitter in neuronal synapses?
A) dopamine B) serotonin C) acetylcholine D) glutamate