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AMINO ACID

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

ASPARTIC ACID

a)

POLAR NEUTRAL AMINO ACID

b)

NON-POLAR AMINO ACID

c)

BASIC AMINO ACID

d)

ACIDIC AMINO ACID

2.

Hydrophilic amino acid side chains are attracted by

a)

H20 molecules

b)

K molecules

c)

Na molecules

d)

Cl molecules

3.
The bond that joins amino acids are called:
a)
Peptide Bonds
b)
Ester Bonds
c)
Glycosidic Linkages
d)
Phosphodiester Bonds
4.
Amino acids all have the same general structure except for the:
a)
Amino Group
b)
Carboxyl Group
c)
'R' Group
d)
Carbonyl Group
5.
The structure of proteins can be changed by environmental factors such as temperature or pH.
a)
True
b)
False
6.
What are the building blocks of proteins?
a)
amino acid
b)
fatty acid
c)
nucleotide
d)
lipid
7.
What is a peptide bond?
a)
Bond that holds two amino acids together.
b)
A bond that holds hydrogen and oxygen molecules together.
c)
A bond that holds the phosphate group of one nucleotide and a sugar of a neighboring nucleotide.
d)
A bond that is formed by the sharing of electrons.
8.

The chain of amino acids folds and coils on itself

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

9.

Amino acid is a compound which has at least one

a)

A. Amino group and one amide group

b)

B. Amino group and one hydroxyl group

c)

C. Amino group and one carboxyl group

d)

D. Hydroxyl group and one carbonyl group

10.

LYSINE

a)

POLAR NEUTRAL AMINO ACID

b)

NON-POLAR AMINO ACID

c)

BASIC AMINO ACID

d)

ACIDIC AMINO ACID

11.

THIN LAYER CHROMATOGRAPHY

a)

separates liquid samples with a liquid solvent (mobile phase)

and a column composed of solid beads (stationary phase)

b)

separates vaporized samples with a carrier gas (mobile phase) and a column composed of a liquid or of solid beads (stationary phase)

c)

separates dried liquid samples with a liquid solvent (mobile phase) and a paper strip (stationary phase)

d)

separates dried liquid samples with a liquid solvent (mobile phase) and a glass plate covered with a thin layer of alumina or silica gel (stationary phase)

12.

GAS CHROMATOGRAPHY

a)

separates liquid samples with a liquid solvent (mobile phase)

and a column composed of solid beads (stationary phase)

b)

separates vaporized samples with a carrier gas (mobile phase) and a column composed of a liquid or of solid beads (stationary phase)

c)

separates dried liquid samples with a liquid solvent (mobile phase) and a paper strip (stationary phase)

d)

separates dried liquid samples with a liquid solvent (mobile phase) and a glass plate covered with a thin layer of alumina or silica gel (stationary phase)

13.

PAPER CHROMATOGRAPHY

a)

separates liquid samples with a liquid solvent (mobile phase)

and a column composed of solid beads (stationary phase)

b)

separates vaporized samples with a carrier gas (mobile phase) and a column composed of a liquid or of solid beads (stationary phase)

c)

separates dried liquid samples with a liquid solvent (mobile phase) and a paper strip (stationary phase)

d)

separates dried liquid samples with a liquid solvent (mobile phase) and a glass plate covered with a thin layer of alumina or silica gel (stationary phase)

14.

LIQUID CHROMATOGRAPHY

a)

separates liquid samples with a liquid solvent (mobile phase)

and a column composed of solid beads (stationary phase)

b)

separates vaporized samples with a carrier gas (mobile phase) and a column composed of a liquid or of solid beads (stationary phase)

c)

separates dried liquid samples with a liquid solvent (mobile phase) and a paper strip (stationary phase)

d)

eparates dried liquid samples with a liquid solvent (mobile phase) and a glass plate covered with a thin layer of alumina or silica gel (stationary phase)

15.

Positive result on ninhydrin test of amino acid

a)

colorless

b)

blue

c)

black

d)

red