Substances That Enter the Cell Usually Do So Through the ________

Question

Substances that enter the cell usually do so through the ________.
A) cholesterol
B) glycocalyx
C) glycolipids
D) integral proteins
E) peripheral proteins

Accepted Answer

Integral proteins are transmembrane proteins that span the entire lipid bilayer and are involved in the transport of substances across the cell membrane, making them the most likely structure for substances to enter the cell. Cholesterol, glycocalyx, and glycolipids are not directly involved in transport across the cell membrane. Peripheral proteins are only loosely associated with the cell membrane and are not involved in transport of substances across the membrane.