Ch 2- Proteins

Question 1

Monomer

Answer 1

Amino Acids:
1. Carboxyl group
2. Amino group
3. R group
(spells CAR)

Question 2

Polymer

Answer 2

Polypeptide, chain of amino acids that are joined by a peptide bond

Question 3

Function of Proteins

Answer 3

Structural support, building blocks for our cells

Question 4

examples of proteins and their functions

Answer 4

• Keratin: makes up hair and nails
• Collagen: lens support to ligaments, tendons, skin
• Hemoglobin: transports oxygen

Question 5

Enzymes

Answer 5

speed up chemical reactions

Question 6

Denature

Answer 6

when proteins are exposed to extremes in heat and PH, they undergo an irreversible change, called being denatured

Question 7

____ is important to function

Answer 7

shape

Question 8

4 structures of organization

Answer 8

Primary, Secondary, Tertiary, Quaternary

Question 9

Primary Structure

Answer 9

linera sequence of amino acids joined by peptide bonds

Question 10

Secondary Structure

Answer 10

when a protein makes certain types of structures in different places; fold

• alpha helix
• beta helix

Question 11

Tertiary Structure

Answer 11

final 3-D shape maintained by various types of boundary between R groups

Question 12

Quaternary Structure

Answer 12

in proteins with multiple polypeptide chains, arranged to give a 4th level of structure
-Hemoglobin has a quaternary structure