Question

1. collagen, lipase, and hemoglobin have totally different functions but are classified as proteins. select the two characteristics that these proteins have in common.

a. they contain nitrogen.
b. they are made of disaccharides.
c. they are composed of amino acids.
d. they form by using fatty acids and glycerin.
e. they contain a base, sugar, and a phosphate group.

1. the characteristics of two macromolecules are listed.

molecule r	molecule s

how should the molecules be identified?
a molecule r: carbohydrate; molecule s: lipid
b molecule r: nucleic acid; molecule s: protein
c molecule r: protein; molecule s: carbohydrate
d molecule r: lipid; molecule s: nucleic acid

1. myristic acid is a saturated fatty acid found in animal and plant cells. this fatty acid helps provide structure to the cell membrane and energy storage. how would myristic acid be classified?

a as a carbohydrate
b as a lipid
c as a nucleic acid
d as a protein

Explanation:

1. Proteins contain nitrogen and are composed of amino - acids. Disaccharides are related to carbohydrates, fatty acids and glycerin form lipids, and a base, sugar, and phosphate group are components of nucleic acids.
2. Molecule R with a double - helix structure and storing genetic information is a nucleic acid. Molecule S with a complex 3D structure sensitive to temperature and pH and built using genetic instructions is a protein.
3. Fatty acids like myristic acid are classified as lipids. They are not carbohydrates (which have a different structure and function), nucleic acids (which store genetic information), or proteins (which are made of amino acids).

Answer:

1. A. They contain nitrogen., C. They are composed of amino acids.
2. B. Molecule R: nucleic acid; Molecule S: protein
3. B. as a lipid