Unit 7.1

Question 1

The side group or ___ is what gives an amino acid its unique properties.

Answer 1

R group

Question 2

Describe the primary level of protein structure.

Answer 2

a sequence of amino acids, which determines the final shape

Question 3

Describe the secondary level of protein structure.

Answer 3

local folded structures within a polypeptide (forms alpha helix and beta pleated sheet)

Question 4

Describe the tertiary level of protein structure.

Answer 4

3D shape formed by a polypeptide

Question 5

Describe the quaternary level of protein structure.

Answer 5

more than one polypeptide chain bonded together

Question 6

How is a tertiary structure affected by hydrophobic amino acids?

Answer 6

the amino acids fold into the structure

Question 7

How is a tertiary structure affected by hydrophilic amino acids?

Answer 7

the amino acids fold out/away from the structure

Question 8

How is a tertiary structure affected by acidic and basic amino acids?

Answer 8

the two amino acids are attracted to each other, and pull towards each other

Question 9

How is a tertiary structure affected by cysteines amino acids?

Answer 9

form covalent disulfide bonds

Question 10

What is denaturation?

Answer 10

disruptions in hydrogen and ionic bonds due to changes in temperature, pH, and salinity - can occur in secondary, tertiary, and quaternary levels