Question

support questions 17 and 18 are multiple choice. 17. protein is a polymer made up of many smaller units (monomers). what are these monomers—basic building blocks of proteins—called? a) fatty acids b) monosaccharides c) amino acids 18. which of the following varies in different amino acids? a) side chain b) amino group (nh₂) c) carboxyl group (cooh) 19. two amino acids chemically bond together. a) what type of bond is formed? __________ b) besides the peptide, what other molecule is formed? ________ c) what type of synthesis is this? __________ d) what must happen to the polypeptide for it to form into a functional protein? 20. what is denaturation? list three ways by which proteins can become denatured.

Explanation:

1. Proteins are polymers of amino - acids. Fatty acids are building blocks of lipids, and monosaccharides are building blocks of carbohydrates.
2. All amino acids have an amino group and a carboxyl group. The side - chain (R - group) varies among different amino acids, giving them unique properties.

19a. When two amino acids bond, a peptide bond is formed.
19b. A water molecule is formed during the formation of a peptide bond between two amino acids.
19c. This is a dehydration synthesis (also called condensation reaction) as water is removed during the bond formation.
19d. The polypeptide must fold into a specific three - dimensional structure to form a functional protein.

1. Denaturation is the loss of a protein's native three - dimensional structure, which can be caused by high temperature, extreme pH, and the presence of certain chemicals.

Answer:

1. c. Amino acids
2. a. Side chain

19.
a. Peptide bond
b. Water molecule
c. Dehydration synthesis
d. It must fold into a specific three - dimensional structure.

1. Denaturation is the loss of a protein's native three - dimensional structure. Three ways proteins can be denatured: high temperature, extreme pH, presence of certain chemicals.