Practice Quiz 3 (functional groups, sugars)
You have 20 minutes to finish the quiz.
Q.1:
Which molecule (above Fig.) increases the H
+
concentration in an aqueous solution ?
A
B
C
D
E
Q.2 :
Which molecule (above Fig.) increases the pH if added to water?
A
B
C
D
E
Q.3 :
Which molecule is glyceraldehyde
A
B
C
D
A
Q.4 :
Which molecule (above Fig.) contains a methyl group?
D, E
A
A, B
A, B, C
all
Q.5 :
Which molecule (above Fig.) is optically active ?
A and B
A
B
none
Q.6:
Which functional group can bind a proton (H
+
)?
OH
COOH
NH2
C=O
SH
Q.7:
Which functional group participates in the secondary structure of proteins (alpha helix)
OH
COOH
NH3+
C=O
SH
Q.8:
Simple sugars are highly water soluble mainly because they
can exist in ringform
react to form polysaccharides
the many hydroxyl groups (OH) make the molecule polar
have a relatively low molecular weight
Q.9 :
Which of the following is a monosaccharide?
table sugar
maltose
lactose
fructose
Q.10 :
Glucose is the most abundant sugar among hexoses because
it is a component cellulose and starch
of the thermodynamic stability of its structure
it is of fundamental importance in energy metabolism
all of the above
Q.11 :
Which is not true? Glucose and galactose
differ by the orientation of one OH group
are hexoses
have optically active carbon atoms
all are true
Q.12 :
Glycogen has the following properties
1 - 4 beta linkages
cross linkages to other carbohydrate chains
contains fructose
all of the above
Q.13 :
Which of the following terms includes all others
disaccharide
cellulose
carbohydrate
polysaccharide
Q.14 :
The building block molecules of cellulose are
alpha glucose
beta glucose
sucrose
fructose
Q.15 :
Plants store their excess glucose as
glucose
fat
cellulose
glycogen
starch