1- Monosaccharides are
major components of:
a) DNA
b) ATP
c) NADP
d) Ribulose
e) All
2- In plants, carbohydrates
are transported in the form of:
a) Glucose
b) Fructose
c) Sucrose
d) Maltose
3- Glycoproteins and
glycolipids are present in:
a) Plasma membrane
b) Bacterial cell
c) Extracellular matrix
d) All
4- The sweetest sugar is:
a) Glucose
b) Fructose
c) Sucrose
d) Maltose
5- Mostly used
carbohydrate is:
a) Glucose
b) Maltose
c) Sucrose
d) Fructose
6- The most abundant
monosaccharide is:
a) Pentose
b) Hexose
c) Both
d) None
7- The most abundant
carbohydrate is:
a) Sucrose
b) Glucose
c) Cellulose
d) Fructose
8- Which one of the
following has no free aldehyde or keto group?
a) Glucose
b) Cellulose
c) Sucrose
d) Pentose
9- The most abundant organic
molecule is:
a) Cellulose
b) Wax
c) Rubisco
d) Starch
10- The minimum number of
glycosidic bonds in polysaccharides is:
a) 10
b) 20
c) 30
d) 40
11- Which type of lipid
have alcohol rather than glycerol?
a) Carotenoids
b) Steroids
c) Waxes
d) Acylglycerols
12- Chemically, rubber is
a:
a) Protein
b) Lipid
c) Carbohydrate
d) None
13- The simplest fatty acid
is:
a) Acetic acid
b) Palmitic acid
c) Butyric acid
d) None
14- Fatty acid which s
least likely to be present in wax is:
a) Acetic acid
b) Palmitic acid
c) Butyric acid
d) None
15- The specific gravity of
fat is:
a) 0.5
b) 0.6
c) 0.7
d) 0.8
16- Protein is related to
all except:
a) Homopolymers
b) Polypeptides
c) Heteropolymers
d) Myosin
17- The simplest amino
acid is:
a) Glycine
b) Alanine
c) None
d) Both
18- A segment of DNA has
120 adenine and 120 guanines, the number of nucleotides present in the segment is:
a) 400
b) 440
c) 480
d) 520
19- Which one of the
following is never a part of carbohydrate?
a) Carbon
b) Hydrogen
c) Nitrogen
d) Oxygen
20- The bonds responsible
for energy storage in lipids are:
a) C-H
b) C-N
c) C=O
d) C-C
21- Acylglycerols are:
a) Esters
b) Fatty acids
c) Alcohols
d) None
22- In animals, fatty
acids are:
a) Ringed
b) Branched
c) Straight
chain
d) None
23- ____ aids the
movement of water through the xylem in plants:
a) Adhesion
b) Cohesion
c) Attraction
d) Repulsion
24- Which of the following
is not the property of water?
a) Dipolar molecule
b) Cohesion
c) Helps in temporary regulation
d) The main source
of energy
25- Which one of the
following is most soluble in water?
a) Sucrose
b) Glycogen
c) Starch
d) Chitin
26- Which type of RNA is
abundant in the cell?
a) sRNA
b) mRNA
c) rRNA
d) tRNA
27- Brain cells have ___
% of water?
a) 70
b) 75
c) 85
d) 90
28- Which of the
following contains beta glucose?
a) Starch
b) Glycogen
c) Cellulose
d) All of the above
29- Amylopectin is:
a) Branched
b) Coiled
c) Helix
d) Unbranched
30- A triglyceride is a:
a) Macromolecule
b) Monomer
c) Polymer
d) None
31- Which of the
following is a peptide bond?
a) -C-N
b) -C-P
c) -C-O
d) -C-S
32- Which of the
following nitrogenous base is purine?
a) Adenine
b) Cytosine
c) Guanine
d) Both a
and c
33- Antibodies are:
a) Primary proteins
b) Secondary proteins
c) Tertiary proteins
d) Quaternary
proteins
34- ______ cannot be
hydrolyzed:
a) Monosaccharide
b) Polysaccharide
c) Oligosaccharide
d) None
35- ____ is the most common respiratory substrate as a source of energy:
a) Glucose
b) Fructose
c) Sucrose
d) Glycogen
36- The combination of a pentose sugar with a base is:
a) Nucleotide
b) Nucleoside
c) Nuclei
d) Polynucleotide
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