Amino Acids And Proteins

Question 1

Hydrogen bonds, ionic interactions, van der waals interactions, and hydrophobic interactions are all examples of?

Answer 1

Non-covalent interactions

Question 2

What is stronger covalent or non-covalent bonds?

Answer 2

Covalent bonds

Question 3

What are the polar non-charged amino acids?

Answer 3

S, T, C, N, Q

Question 4

What are the aromatic amino acids and what is special about them?

Answer 4

F, Y, W, they absorb light

Question 5

What are the positively charged amino acids?

Answer 5

K, R, H

Question 6

What are the negatively charged amino acids?

Answer 6

D, E

Question 7

How many amino acids are there per turn in the alpha helical secondary structure?

Answer 7

3.6

Question 8

What stabilizes the secondary structure of proteins?

Answer 8

H-bonding between peptide bonds

Question 9

Which two amino acids are not readily found in alpha helical structures?

Answer 9

Proline and glycine

Question 10

Where are proline and glycine frequently found?

Answer 10

Beta turns

Question 11

What is the tertiary structure of proteins usually described in terms of?

Answer 11

Domains

Question 12

What is a domain?

Answer 12

Region in polypeptide that fold independently from each other

Question 13

What is important in the stabilization of tertiary and quaternary structures?

Answer 13

Disulfide bridges

Question 14

What is an ortholog?

Answer 14

Protein in different species with same function

Question 15

What is a paralog?

Answer 15

Protein of similar sequence with different function in same species

Question 16

What is the primary structure of a protein?

Answer 16

Sequence of amino acids connected by peptide bonds