Question

1. Cholesterol is important in cells because ____.

A. is an important part of the plasma membrane and required for cell division

B. contains multiple carbon chains that make it a good insulator

C. is required to produce bile salts, which are important for digestion

D. None of the above; cholesterol is rather toxic and cells do better without it.

2. The subunit composition of a protein determines ____.
A. its secondary structure
B. its tertiary structure
C. its quaternary structure
D. its amino acid composition and sequence

Answer 1

1). C. is required to produce bile salts, which are important for digestion....

One of the major uses of cholesterol is the synthesis of bile acids. These are synthesized in the liver from cholesterol and are secreted in the bile. They are essential for the absorption of fat from the contents of the intestine......

Cholestrol does not play role in cell division though it forms the cell membrane so 1st option is ruledout other options are totally incorrect...

2). . its amino acid composition and sequence as The simplest level or subunit of protein structure, primary structure, is simply the sequence of amino acids in a polypeptide chain.