3.3 Molecules Study Guide

Question 1

proteins

Answer 1

most structurally & functionally diverese

Question 2

proteins

Answer 2

macromolecules group

Question 3

Funtion of a protein

Answer 3

-Storage
-Movement
-transport
-identification
-defense
-chemical reactions
-structure keratin
-communication

Question 4

Side chain

Answer 4

“R Group”

Question 5

Proteins function depends

Answer 5

protein structures

Question 6

Primary 1 Structure

Answer 6

Order of amino acids in chain
-sequence dterined by gene
-amino acid sequence determines final shape
-covalent bonds formed via dehydration synthesis

Question 7

peptide bond

Answer 7

polypeptide

Question 8

Secondary 2 Structures

Answer 8

-small sectionof folding can be seen in all polypeptides
-it bond between carboxyl nand amines of amino acids
-proteins have a combiination of a helix
b-pleated sheet

Question 9

Tertiary 3 Structures

Answer 9

-Final 3D shape of a single polypeptides
-interactions between side chains of amino acids
opposite charges attract
acidic negative basic positive
cysteines- form covalent
hydrophillic towards outside

Question 10

Protein Denaturation

Answer 10

unfolding a protein
-conditions that disrupt H bonds & ionic bonds
-temperature
-pH
-salinity
-destroys functionality

Question 10

Quaternary 4 Structure

Answer 10

-more than one polypeptide chain bonded together
-mostly held by hydrogen bond