Question

cholesterol is an integral part of plasma membranes. based on its structure, where is it found in the membrane?
completely exposed to the intracellular surface of cells.
completely exposed on the extracellular surface of cells.
hydrogen bonded with dna.
hydrogen bonded with proteins.
embedded in the phospholipid bilayer of membranes.
question 15
0.5 pts
the monomers that make up proteins are called ____.
lipids
amino acids
purines
saccharides
pyrimidines

Explanation:

1. Cholesterol has a steroid - like structure with a hydroxyl group and a non - polar hydrocarbon tail. The non - polar part allows it to embed in the non - polar region of the phospholipid bilayer of the cell membrane.
2. Proteins are polymers made up of amino acid monomers. Lipids are a different class of biomolecules, purines and pyrimidines are components of nucleic acids, and saccharides are monomers of carbohydrates.

Answer:

1. Embedded in the phospholipid bilayer of membranes.
2. Amino acids