Successful mating may occur only between members of the same

a. family.
b. order.
c. species.
d. kingdom.
e. genus.


C

Biology & Microbiology

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At rest, neurons exhibit a negative membrane potential. This is most DIRECTLY due to

A. movements of negatively charged proteins and nucleic acids across the membrane. B. passive leakage of Na+ions across the membrane. C. passive leakage of K+ions across the membrane. D. movement of Na+ ions through voltage-gated Na+ channels. E. movement of K+ ions through voltage-gated K+ channels.

Biology & Microbiology

Early investigators associated the tendency to violent criminal behavior with the ____________________ karyotype, but there is no evidence of a direct link between the two

Fill in the blank(s) with correct word

Biology & Microbiology

Produces parenchyma, collenchyma, and sclerenchyma cells. 

 Choose the letter of the best match: A. protoderm B. vascular cambium C. apical meristem D. procambium E. ground meristem

Biology & Microbiology

What is the name of the structure formed when the 10 nm fibers of chromatin form a cylindrical filament of coiled nucleosomes?

What will be an ideal response?

Biology & Microbiology