proteins

Question 1

What does proteins contain?

Answer 1

C,H,O,N, sometimes S, P

Question 2

Functions of proteins

Answer 2

• serve as structural components of animals
  
  • serve as control molecules (enzymes)
  • serve as transport and messenger molecules

Question 3

acts like a base, tends to be

positive

Answer 3

Amino group

Question 4

acts like an acid, tends to

be negative

Answer 4

Carboxylic group

Question 5

group is variable, from 1 atom to 20

Answer 5

R group/ Side chain

Question 6

The amino acid sequence

Answer 6

Primary structure

Question 7

Characteristic structures that occur in many proteins (e.g. alpha helix, beta sheets)

Answer 7

Secondary structure

Question 8

Three dimensional structure of proteins

Answer 8

Tertiary structure

Question 9

Three dimensional structure of proteins composed of multiple subunits

Answer 9

Quaternary structure

Question 10

Extended protein structure
Insoluble in water
Secondary structure is simple
Functions for support and external protection

Answer 10

Fibrous Protein

Question 11

Compact protein structure
Soluble in water
Secondary structure is complex – mixture of α-helix, β-sheet, loop structures
Functions in all aspects of metabolism

Answer 11

Globular Proteins

Question 12

Non-polar amino acids

Answer 12

G - gly
A - ala
V - valine
L - leucine
I - ile 
P - pro
F - phe
M - met
W - trp

Question 13

1 amino group
1 carboxyl group
1 non polar side chain

Answer 13

non-polar amino acids

Question 14

Polar amino acids

Answer 14

S - ser
C - cysteine
T - thr
N - asn
Q - gln
Y - tyr

Question 15

1 amino group
1 carboxyl group
1 polar neutral side chain

Answer 15

Polar neutral amuno acids

Question 16

Polar acidic amino acids

Answer 16

D - asp

E - glu

Question 17

1 amino group

2 carboxyl group (1 is part of side chain)

Answer 17

Polar acidic amino groups

Question 18

Polar basic amino acids

Answer 18

H - his
K - lys
R - arg

Question 19

2 amino group
(1 is part of side chain)
1 carboxyl group

Answer 19

Polar basic amino acids

Question 20

Essential amino acids

Answer 20

D - asp
H - his
I - ile
L - leu
K - lys
M - met
F - phe
T - thr
W - trp
V - val