Proteins

Question 1

What are proteins?

Answer 1

made of C,H,O,N
structure determines its function
polymers of amino acids (formed by multiple amino)

Question 2

amino acids

Answer 2

monomer subunit of proteins
made up of: amino group (nh2), carboxyl (cooh), hydrogen & r group
20 diff r groups 8 are essential to humans

Question 3

Peptides

Answer 3

peptide bond is a covalent bond formed by dehydration synthesis
peptide is bond between amino acids
polypeptide means more than 50

Question 4

types of protein

Answer 4

structural: frame support
defensive: infection fighters
signal: messenger
carrier: transport of materials
recognition: cellular markers
enzyme: catalyst
motile: movement

Question 5

Primary (Structure)

Answer 5

linear sequence of amino acids
change could alter or destroy function

Question 6

Secondary (structure)

Answer 6

coils/foileds that contribute to shape
results from hydrogen bonding
common structures: beta-pleated & alpha-helix

Question 7

Tertiary Structure

Answer 7

three dimensional shape due to range of interactions among r groups
interactions include hydrogen bonds, hydrophobic interactions & disulfide bridges
critical to function

Question 8

Quaternary (structure)

Answer 8

forms subunits & exists in many structures

Question 9

denaturation

Answer 9

loss of both structure and function of protein

Question 10

protein prosthetic groups

Answer 10

non-protein components

Question 11

structure & function relationship

Answer 11

long & linear: provides strength
compact & globular: good for transport