The Important Mcqs On Biology Topic

The branch of biology, which deals with the
life process and function of processes is
known as:
A. Physiology
B. Pathology
C. Histology
D. Evolution
2. Discovered the microscopic creature under
microscope in the red blood cells of malarial
A. Ronald Ross
B. Laveran
C. Grassy
D. A.F.A king

3. The physical basis of life is:
A. Nucleotide and proteins
B. Nucleus
C. Cell
D. Protoplasm

4. Life was evolved first:
A. On earth
B. In water
C. In sky
D. On the hill
5. The ________ structure was first proposed by
A. Cellular-protein
B. Star protein
C. Cyclo protein
D. Lipo protein
6. Opening and closing of stomata is controlled
by which of the following taking place in the
guard cells?
A. Turbidity
B. Turgidity
C. C. Flaccidity

D. Turgor Force
7. If the eyepiece of a microscope is marked 10X
and the high power objective is marked 44X,
the total magnification is:
A. 100
B. 144
C. 440
D. 1044
8. Which one of the following areas of biological
the study could produce evidence to prove
conclusively that two organisms belong to
the same species?
A. Anatomy
B. Embryology
C. Genetics
D. Physiology
9. _________ is a science of exception:
A. Biology
B. Zoology
C. Botany
D. Pathology
10. The branch of biology, which deals with the
continuous adaptation of living organisms to
their environment is known as:
A. Adaptation
B. Evolution
C. Similarity
D. Genetics
11. Palaeobotany is the study of:
A. Living plants
B. Dead plants
C. Fossil plants
D. Fossil animas
12. The word Biology has been derived from
_________ language.
A. English
B. Latin
C. Greek
D. French

The name malaria is a combination of two
_________ words.
A. Italian
B. Latin
C. English
D. French
14. It is currently estimated that the age of the
earth is about:
A. 1 billion years
B. 4 billion years
C. 1 light year
D. 100 billion years
15. An educated guess is known as ______.
A. Hypothesis
B. Theory
C. Statement
D. Problem

UNIT NO. (02)
1. If one ribose molecule were bonded to one
adenine molecule and one Phosphate
the molecule, we would have a
A. Ribosome
B. Nucleotide
C. Nucleic acid
2. An organic compound in which hydrogen and
oxygen are present in the same ratio as in
water is
A. Fat
B. Carbohydrate
C. Protein
D. Nucleic acid
E. All of the above
3. Deficiency of vitamin A causes
A. Rickets
B. Osteomalacia
C. Delay in coagulation of blood
D. Night blindness
E. Anemia

4. Steroids consist of _______ 6-membred
carbon rings and one 5-membred carbon
A. Four
B. Three
C. Two
D. Five
E. Six
5. What occurs when sucrose is broken down
to monosaccharides?
A. reducing sugars and releasing water
B. condensation of reducing sugars using
C. hydrolysis, releasing reducing sugars and
releasing water
D. hydrolysis, releasing reducing sugars and
using water

6. The structure of a lipid contains all of the
following EXCEPT:
A. A carboxyl group
B. A CH2O basic structure
C. A glycerol molecule
D. A fatty acid molecule
E. An OH group
7. Stearin (C57 H10 O6) is an important example
A. Carbohydrates
B. Proteins
C. Waxes
D. Acylglycerol
E. Nucleic Acids
8. The above diagram represents the process
A. Hydrolysis
B. Condensation
C. Neutralization
D. Metabolism
9. Sugar in stored in the liver as:
A. Starch
B. Glycogen
C. Maltose
D. Cellulose

10. Which of the following is correct:
A. Glucose + fructose = maltose
B. Glucose + galactose = sucrose
C. Glucose + glucose = maltose
D. Glucose + glucose = sucrose
11. Polysaccharides are synthesized in plants by
the process of
A. Hydrolysis
B. Oxidation
C. Condensation
D. Glycolysis
12. Which one of the following is not
immediately essential for protein synthesis?
B. Enzyme
C. Glucose
13. The bond present between carbohydrate
A. Peptide bond
B. Covalent bond
C. Glycosidic bond
D. Electrostatic bond
14. A lipid molecule is composed of glycerol
fatty acid in a ratio of:
A. 1:1
B. 1:3
C. 1:4
D. 1:2
15. The formula of glyceraldehyde is:
A. C3H6O4
B. C3H6O3
C. C6H12O6
D. C6H14O7
16. In AMYLOPECTIN the linkage is:
A. 1.3
B. 1.6
C. 2.6
D. 6.6

17. Which of the following organic compounds
represents a protein?
B. (C6H10O5) n
C. C708H1130O224N180S4P4
D. C12H22O11
18. Assuming that only 20 commonest amino
acids are present in a given organism, how
many different dipeptides might
theoretically, be found in it?
A. 20
B. 40
C. 100
D. 400
19. Why do proteins have a buffering effect in
A. They are non – polar
B. They are amphoteric
C. They contain basic amino acids
D. They are a major component of cell
surface membranes
20. The most abundant component of a living
cell is
A. Carbohydrates
B. Proteins
C. Lipids
D. Water
21. Which of the following are true:
A. glucose + fructose = maltose
B. glucose + galactose = sucrose
C. glucose + glucose = maltose
D. glucose + glucose = sucrose
22. Which of the following molecules contain
amino acids?
A. Ascorbic acid
B. Cellulose
C. Collagen
D. Glycogen
23. The _________ structure was first proposed
by Robertson:
A. Cellular-protein
B. Star protein
C. Cyto protein
D. Lipoprotein

The distinctive characteristic and functional
group of fats is:
A. Ketone
B. Alcohol
C. Peptide
D. Ester
25. Lipids are different types of simple lipids
include, natural fats, and oils and:
A. Waxes
B. Sterols
C. Lipids
D. Cholesterols
26. Cellulose is:
A. Disaccharide
B. Pentose Polysaccharide
C. Hexane Polysaccharide
D. Mucopolysaccharide
27. Which of the following is not made up of
hexose sugar subunits:
A. Sucrose
B. Starch
C. Glycogen
D. Insulin
28. How many carbon atoms are found in
monosaccharide compound?
A. 1 to 5 carbon atoms
B. 3 to 6 carbon atoms
C. 5 to 10 carbon atoms
D. 5 to 15 carbon atoms
29. What is the general formula of Carbohydrates?
A. Cn H2n On
B. C2n Hn On
C. Cn H2n O2n
D. None of these
30. Polysaccharides of two types, storage
polysaccharides and:
A. Structural polysaccharides
B. Amino polysaccharides
C. Functional polysaccharides
D. Cellulosic polysaccharides

31. The test of reducing sugars can be done by
A. Cu+2 ions
B. Cu+
C. Hg+
D. None of the above
32. Regarding starch molecule which statement
is correct?
A. Amylase chain of starch is branched,
amylopectin is not branched
B. Amylopectin chain is branched, amylose is
not branched
C. Both chains are branched
D. Both chains are unbranched
33. Assuming that only 20 commonest amino
acids are present in a given organism, how
many different dipeptides might
theoretically, be found in it?
A. 20
B. 40
C. 100
D. 400
E. 10
34. Which of the following has quaternary
A. Myoglobin
B. Actin
C. Tropomyosin
D. Haemoglobin
35. In a typical nucleotide the nitrogenous base
is attached to _________ carbon of pentose
A. 6th
B. 5th
C. 4th
D. 3rd
E. 1st
36. Lysosomes function in:
A. Protein synthesis
B. Processing
C. Intracellular digestion
D. Lipid synthesis
E. Carbohydrate synthesis

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