Asked by Elizabeth Brooks on Jul 27, 2024
Verified
Cell membranes contain transmembrane proteins, which span the lipid bilayer with portions of the protein protruding into the aqueous external and internal cellular environments. The protein regions that span the membrane are ____, while the regions that extend from the membrane are ____.
A) acidic; basic
B) fatty acids; phosphate groups
C) hydrophobic; hydrophilic
D) hydrophilic; hydrophobic
E) polar; nonpolar
Transmembrane Proteins
Proteins that span the entire membrane of a cell and are involved in a variety of cellular processes including signaling, transport, and enzymatic activities.
Lipid Bilayer
A thin polar membrane made of two layers of lipid molecules, fundamental to the structure of cell membranes.
Hydrophobic
Describing molecules or substances that do not mix with or repel water.
- Identify the characteristics of organic molecules based on their chemical properties and functions.
Verified Answer
ZK
Zybrea Knight
Aug 01, 2024
Final Answer :
C
Explanation :
The regions that span the membrane are hydrophobic, allowing them to interact with the fatty acid tails of the lipid bilayer. The regions that extend from the membrane are hydrophilic, allowing them to interact with the aqueous external and internal cellular environments.
Learning Objectives
- Identify the characteristics of organic molecules based on their chemical properties and functions.