Which of the following characteristics affect the diffusion of a substance through the membrane?
a) concentration
b) all of the choices are correct
c) size
d) degree of hydrophobicity
Ans: b) all of the choices are correct
You might also like to view...
What is the immediate effect of ligand binding to a ligand-gated channel?
A. the flow of ions into or out of the cell B. a conformational change of the channel C. the activation of kinase proteins D. the formation of cyclic AMP
Match each mechanism of horizontal gene transfer with its definition:
A. Transduction i. DNA transfer between two linked bacterial cells B. Transformation ii. bacteria picks up environmental DNA C. Conjugation iii. gene transfer via a bacteriophage
The number of species on an island depends on the size of the island and its distance from a mainland. This statement would most likely be made by _____
a. an explorer b. a biogeographer c. a geologist d. a philosopher
Today, evolutionary biologists view speciation as a ____, and instead study the ____ of speciation using classical and genomic approaches.
a. single event; products
b. process; products
c. product; process
d. product; events
e. single event; process