WorksheetsChapter 1 : Molecules of Life
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Water is a universal solvent due to its…
a)
low viscosity.
b)
polar molecules.
c)
high boiling point.
d)
high specific heat capacity.
2.
What determines the cohesiveness of water molecules?
a)
Ionic bonds.
b)
Hydrogen bonds.
c)
Nonpolar covalent bonds.
d)
Hydrophobic interactions.
3.
Glucose dissolves in water because…
a)
it ionizes.
b)
it is hydrophobic.
c)
it is a polysaccharide.
d)
it has polar hydroxyl groups that interact with polar water molecules.
4.
Maltose is composed of two glucose molecules joined by a glycosidic linkage. How is maltose classified?
a)
As a pentose.
b)
As a monosaccharide.
c)
As a disaccharide
d)
As a polysaccharide.
5.
The hydrolysis of triglyceride will yield…
a)
three fatty acids and one glycerol.
b)
three glycerols and one fatty acid.
c)
two fatty acids and three glycerols.
d)
one fatty acid, one amino acid and one glucose.
6.
The unique characteristic of each amino acid is determined by…
a)
its R groups.
b)
its amino group.
c)
the type of peptide bond.
d)
its position on the polypeptide chain.
7.
Which statement about the deoxyribonucleic acid molecule is NOT TRUE?
a)
It contains genetic information in its nucleotide.
b)
It consists of two strands which are parallel to one another.
c)
It contains the bases adenine, guanine, thymine and cytosine.
d)
Its sugar unit is deoxyribose which has a hydrogen group attached to the second carbon.
8.
If one strand of a DNA molecule has the sequence of bases 5’ATTGCA3’, the other complementary strand would have the sequence of…
a)
5’TAACGT3
b)
3’TAACGT5’
c)
5’UAACGU3’
d)
3’UAACGU5’
9.
Which of the following statement is (are) the characteristics of lipids?
a)
I and II only
b)
I and III only
c)
II and III only
d)
I, II and III
10.
In the diagram below, the chemical reaction results in the formation of a (an)…
a)
ionic bond.
b)
peptide linkage.
c)
ester linkage.
d)
glycosidic linkage.
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