2.7.1 Proteins: Amino Acids and the Peptide Bond

Question 1

proteins

Answer 1

• consist of polymers of amino acids and have a specific conformation, or shape

Question 2

amino acids

Answer 2

• have an amine group on one end and a carboxyl group on the other
• there are 20 amino acids, each with a different R group
• consist of a central carbon that has an amine group, a carboxyl group, a hydrogen, and an R group attached

Question 3

peptide bond

Answer 3

• can be formed between two amino acids through dehydration synthesis
• the carbon-nitrogen bond between two amino acids
• formed through dehydration synthesis
  between the carboxyl group of one amino acid and the amine group of the other

Question 4

R groups

Answer 4

• have different properties that, in turn, give the amino acid different properties

Question 5

polypeptide

Answer 5

• a chain of amino acids bonded together. One or several can make up a protein. A polypeptide will have an amine group on one end and a carboxyl group on the other.

Question 6

Proteins consist of many amino acids linked to each other by

Answer 6

• peptide bonds

Question 7

A string of 100-1000 amino acids joined by peptide bonds is a

Answer 7

• polypeptide

Question 8

Which of the following is not true regarding all amino acids?

a. They each have a phosphate group.
b. They each have an amine group.
c. They each have an acidic group.
d. They each have at least one carbon carbon bond.

Answer 8

• They each have a phosphate group

Question 9

Proteins are polymers of

Answer 9

• amino acids

Question 10

Which of the following statements about amino acids is not true?

a. Amino acids are the building blocks of proteins.
b. Amino acids have an amino group at one end.
c. Amino acids have a carboxyl group at one end.
d. Amino acids are composed of proteins.

Answer 10

• d. Amino acids are composed of proteins