Unit 2: Proteins

Question 1

Amino acids are divided into 4 groups

Answer 1

non-polar, polar, acidic, basic

Question 2

functions protein does

Answer 2

enzymes, structural, transport, signaling, receptor, defense

Question 3

amino acids are made up of what functional groups

Answer 3

amino and carboxyl and a Hydrogen

Question 4

4 types of side chains/ R groups

Answer 4

polar, nonpolar, basic, acidic

Question 5

primary structure: what kind of bonds

Answer 5

covalent

Question 6

primary structure: peptide bond is between what 2 functional groups

Answer 6

amino and carboxyl

Question 7

what does primary structure look like

Answer 7

beads on a string

Question 8

what is the head or start of a peptide bond

Answer 8

n-terminus (amino)

Question 9

what is the end of a peptide bond

Answer 9

C-terminus (carboxyl)

Question 10

secondary structure has what kind of bonding and with what

Answer 10

hydrogen with backbone

Question 11

two types of backbone bonding are

Answer 11

alpha helix and beta sheets

Question 12

Tertiary structure: bonds between what

Answer 12

R-groups, rest of the molecule

Question 13

tertiary are held together by what kind of bonding

Answer 13

weak, hydrogen, van der waals, ionic and disulfide bridges

Question 14

what happens in quaternary structure

Answer 14

associated with 2 or more folded peptides into a protein

Question 15

what kind of bond strength is between protein

Answer 15

weak bonds

Question 16

4 things about denature

Answer 16

break all weak bonds
don’t break covalent bonds
secondary, tertiary and quaternary
heat, detergent, strong acid/strong base