Chapter 3.1 Protein Structure & Function

Question 0

The structure of amino acid

Answer 0

With a central CARBON atom bonded with

1. H-a hydrogen atom
2. NH2- a carboxyl functional group
3. COOH- a carboxyl functional group
4. A distinctive “R-Group” ( side chain)

Question 1

Amino acid

Answer 1

Molecules that are composed of 20 different building blocks

Question 2

Classification of Amino Acid

Answer 2

• H bonding ability
• acidic vs basic
• nonpolar, hydrophobia
• polar, hydrophilic

Question 3

Nonpolar side chain

Answer 3

• no charged or electronegative atoms to form H bond
• H2O HATER
  Ex) glyeine, methaine, valine, phenylalanie

Question 4

Polar side chains

Answer 4

Partial charges can form H bond
-hydrophilic, H2O LOVER
Neural , acidic, basic

Question 5

Polar Neutral

Answer 5

-they are not strong enough

(OH) tyrosine,serine, asparagine

Question 6

Polar Acidic

Answer 6

COOH (carboxyl group)

Ex). CH2COOH- very strong

Question 7

Polar basic

Answer 7

NH2-(n) willing to proton acceptor

Ex) CH2(CH2)2NH2 lysine

Question 8

Most hydrophilic to most hydrophobic

Answer 8

Valine, aspartate, asparagine, and tyrosine.

Question 9

Monomer

Answer 9

A molecular subunit!
Ex) an amino acid, a nucleotide, a sugar
ONE PART!!!!!!!!

Question 10

Polymer

Answer 10

A large number of monomers are bonded together

MANY PARTS

Question 11

Polymerization

Answer 11

The process of linking monomers together

Question 12

Condensation reations

Answer 12

Monomer polymerize through condensation reaction ( dehydration reaction)
-monomer in, water out( loss of water molecule)

Question 13

Hydrolysis

Answer 13

Breaks polymers apart by adding a water molecule

water in, monomer out

Question 14

Peptide

Answer 14

Fewer than 50 amino acids are linked together

FEWER peptides

Question 15

Polypeptide

Answer 15

Polymers that contain 50 or more than amino acids

MANY PEPTIDES