Small, nonpolar molecules easily pass through the phospholipid bilayer because the molecules:

A) can dissolve in the hydrophobic portion of the bilayer.
B) dissolve in water and follow the water as it flows into the cell.
C) are brought in by attaching to cholesterol in the membrane.
D) are brought in by attaching to structural proteins in the membrane.


Answer: A

Biology & Microbiology

You might also like to view...

A pollen grain in a plant represents the ________

A. male gametophyte B. female gametophyte C. male sporophyte D. female sporophyte

Biology & Microbiology

Glucose dissolves in water because it

a. ionizes. b. is a polysaccharide. c. is a polar and forms many hydrogen bonds with water molecules. d. has a very reactive primary structure. e. is an isotope

Biology & Microbiology

Gas exchange, which is necessary for photosynthesis, can occur most easily in which leaf tissue?

a. epidermis b. palisade mesophyll c. spongy mesophyll d. vascular tissue e. bundle sheath

Biology & Microbiology

________ is the procedure in which a harmless form of an antigen from a pathogen is introduced into the body in order to stimulate an immune response to that antigen

Fill in the blank(s) with correct word

Biology & Microbiology