BIOL 200 Unit 2 - Biological Membranes Exam Q&A

BIOL 200 Unit 2 - Biological
Membranes Exam Q&A
Which of the following amino acids are positively charged in an aqueous solution?
a. Basic
b. Nonpolar
c. Polar uncharged
d. Acidic - ANSWER-a. Basic

Match each property with the level(s) of protein structure. Choose the best answer in
each case.

Options:
a. Primary structure
b. Secondary structure
c. Tertiary structure
d. Quaternary structure
e. Both tertiary and quaternary structure
f. Secondary, tertiary, and quaternary structure

1. Examples of this are alpha-helices and beta-pleated sheets
2. Results from repetitive hydrogen bonds between atoms in the peptide backbone
3. Can be altered when a protein is reversibly denatured.
4. Results from covalent bonds formed between an amino group and a carboxyl
group
5. Results from covalent bonds between two S-containing R-groups.
6. Results from covalent and non-covalent interactions between R-groups within one
polypeptide chain
7. Is also known as the protein sequence.
8. Results from covalent and non-covalent interactions between different polypeptide
chains
9. Results from non-covalent interactions between - ANSWER-1. b
2. b
3. f
4. a
5. e
6. c
7. a
8. d
9. e

Peptide-bonded backbone of a polypeptide has the following key characteristics:
Select all that apply.