Amino Acids and Proteins

Question 1

What amino acid isomer do proteins contain

Answer 1

L isomers

Question 2

L vs D isomers in amino acids

Answer 2

L isomers have the amino group on the left side

D isomers have it on the right

Question 3

As pH increases, what will the first group be to dissociate on a fully protonated amino acid

Answer 3

carboxyl group

Question 4

aliphatic amino acids

Answer 4

C and H atoms only

Question 5

hydroxyl amino acids

Answer 5

contains hydroxyl group

Question 6

sulfur amino acids

Answer 6

contain sulfur

Question 7

aromatic amino acids

Answer 7

contain 5 carbon ring

Question 8

acidic amino acids

Answer 8

contain carboxyl group

Question 9

basic amino acids

Answer 9

contain amino group

Question 10

electronegativity

Answer 10

power of an atom to attract electrons towards itself

Question 11

primary protein structure

Answer 11

amino acid sequence

Question 12

secondary protein structure

Answer 12

arrangement of amino acids close to one another e.g alpha helix, beta sheets

Question 13

tertiary structure

Answer 13

interactions between R groups of amino acids that are far apart giving protein its 3D structure

Question 14

quaternary structure

Answer 14

interactions between multiple polypeptide chains