Which statement about chemical or electrical synapses is true?
a. Electrical synapses require a neurotransmitter.
b. In electrical synapses, presynaptic and postsynaptic neurons are separated by synaptic
clefts.
c. Electrical synapses store excess ions in synaptic vesicles.
d. In chemical synapses, presynaptic and postsynaptic neurons are connected by a protein
channel.
e. Electrical synapses involve the transfer of ions from presynaptic to postsynaptic neurons
E
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Discuss two hypotheses that attempt to explain the high species richness in the tropics
What will be an ideal response?
Using mathematical reasoning, a triplet genetic code gives a possible ________ different codons, while a doublet genetic code would yield ________ different codons
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A) 5000 base pairs B) 750 base pairs C) 1000 base pairs D) 250 base pairs E) 2500 base pairs