Water Can Move Quickly Through the Plasma Membrane of Some

question 28

Multiple Choice

Water can move quickly through the plasma membrane of some cells because

• A)the bilayer is hydrophilic.
• B)it moves through hydrophobic channels.
• C)water movement is tied to ATP hydrolysis.
• D)it is a small,nonpolar molecule.
• E)it moves through aquaporin channel proteins.

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Definitions:

Denisovan Genome

The genetic blueprint of the Denisovans, an extinct species of archaic humans, obtained from ancient DNA samples.

Introgression

The transfer of genetic material from one species to another through hybridization and backcrossing, leading to the incorporation of foreign genes into a population.

Synonymous Substitution Rate

The rate at which point mutations occur in a DNA sequence that do not alter the encoded amino acid due to the redundancy of the genetic code.