Deficiency of Vitamin B12 (cyanocobalamin) leads to pernicious anemia, characterized by the destruction of RBCs.
Q63mcq
Which one of the following polymers is prepared by addition polymerisation ?
a.
Nylon-66
b.
Novolac
c.
Dacron
d.
Teflon
Correct Answer
Step-by-Step AI Explanation
Verified Method
Teflon (polytetrafluoroethene) is an addition polymer. Others are condensation polymers.
Q66mcq
Given below are two statements :
Statement I : Aspirin and Paracetamol belong to the class of narcotic analgesics.
Statement II : Morphine and Heroin are non-narcotic analgesics.
In the light of the above statements, choose the correct answer from the options given below.
a.
Both Statement I and Statement II are false.
Correct Answer
b.
Statement I is correct but Statement II is false.
c.
Statement I is incorrect but Statement II is true.
d.
Both Statement I and Statement II are true.
Step-by-Step AI Explanation
Verified Method
Aspirin/Paracetamol are non-narcotic, while Morphine/Heroin are narcotic. Both statements are false.
Q90mcq
Match List - I with List - II.
List - I
(a) 2SO2(g) + O2(g) → 2SO3(g)
(b) HOCl(g) → OH + Cl
(c) CaCO3 + H2SO4 → CaSO4 + H2O + CO2
(d) NO2(g) → NO(g) + O(g)
List - II
(i) Acid rain
(ii) Smog
(iii) Ozone depletion
(iv) Tropospheric pollution
Choose the correct answer from the options given below.
SO2 oxidation leads to tropospheric pollution, HOCl photolysis leads to ozone depletion, CaCO3 weathering is caused by acid rain, NO2 photolysis is a key step in smog formation.
Q102mcq
When gene targeting involving gene amplification is attempted in an individual’s tissue to treat disease, it is known as:
a.
Gene therapy
Correct Answer
b.
Molecular diagnosis
c.
Safety testing
d.
Biopiracy
Step-by-Step AI Explanation
Verified Method
Gene therapy involves the modification of the genetic makeup of a patient to treat or cure a disease.
Q103mcq
Which of the following stages of meiosis involves division of centromere?
a.
Metaphase II
b.
Anaphase II
Correct Answer
c.
Telophase II
d.
Metaphase I
Step-by-Step AI Explanation
Verified Method
In meiosis, the centromere divides during Anaphase II, separating sister chromatids.
Q104mcq
Which of the following is an incorrect statement?
a.
Microbodies are present both in plant and animal cells.
b.
The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm.
c.
Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm.
d.
Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles.
Correct Answer
Step-by-Step AI Explanation
Verified Method
Mature sieve tube elements lose their nucleus and many organelles at maturity to facilitate conduction.
Q104mcq
Which of the following is an incorrect statement?
a.
Microbodies are present both in plant and animal cells.
b.
The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm.
c.
Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm.
d.
Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles.
Correct Answer
Step-by-Step AI Explanation
Verified Method
Mature sieve tube elements in plants lose their nucleus and many other organelles at maturity to facilitate transport.
Q105mcq
Amensalism can be represented as:
a.
Species A (+) ; Species B (+)
b.
Species A (-) ; Species B (-)
c.
Species A (+) ; Species B (0)
d.
Species A (-) ; Species B (0)
Correct Answer
Step-by-Step AI Explanation
Verified Method
Amensalism is an interaction where one species is harmed (-) and the other is neither harmed nor benefited (0).
Q105mcq
Amensalism can be represented as :
a.
Species A (+) ; Species B (+)
b.
Species A (−) ; Species B (−)
c.
Species A (+) ; Species B (0)
d.
Species A (−) ; Species B (0)
Correct Answer
Step-by-Step AI Explanation
Verified Method
Amensalism is an interaction where one species is harmed (-) and the other is unaffected (0).
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The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is :
a.
Geitonogamy
b.
Chasmogamy
c.
Cleistogamy
d.
Xenogamy
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Plasmid pBR322 has PstI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for beta-galactoside production and the recombinant plasmid is inserted in an E.coli strain
a.
the transformed cells will have the ability to resist ampicillin as well as produce beta-galactoside.
b.
it will lead to lysis of host cell.
c.
it will be able to produce a novel protein with dual ability.
d.
it will not be able to confer ampicillin resistance to the host cell.
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Plasmid pBR322 has PstI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for β-galactoside production and the recombinant plasmid is inserted in an E.coli strain:
a.
the transformed cells will have the ability to resist ampicillin as well as produce β-galactoside.
b.
it will lead to lysis of host cell.
c.
it will be able to produce a novel protein with dual ability.
d.
it will not be able to confer ampicillin resistance to the host cell.
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(a) S phase (i) Proteins are synthesized (b) G2 phase (ii) Inactive phase (c) Quiescent stage (iii) Interval between mitosis and initiation of DNA replication (d) G1 phase (iv) DNA replication
(a) Nitrococcus (i) Denitrification (b) Rhizobium (ii) Conversion of ammonia to nitrite (c) Thiobacillus (iii) Conversion of nitrite to nitrate (d) Nitrobacter (iv) Conversion of atmospheric nitrogen to ammonia
Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its complimentary DNA in a clone of cells, followed by its detection using autoradiography because :
a.
mutated gene completely and clearly appears on a photographic film.
b.
mutated gene does not appear on a photographic film as the probe has no complementarity with it.
c.
mutated gene does not appear on photographic film as the probe has complementarity with it.
d.
mutated gene partially appears on a photographic film.
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The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at G1 phase is 8, what would be the number of chromosomes after S phase?
a.
16
b.
4
c.
32
d.
8
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Read the following statements. (a)Metagenesis is observed in Helminths. (b)Echinoderms are triploblastic and coelomate animals. (c)Round worms have organ-system level of body organization. (d)Comb plates present in ctenophores help in digestion. (e)Water vascular system is characteristic of Echinoderms. Choose the correct answer from the options given below.
a.
(a), (b) and (c) are correct
b.
(a), (d) and (e) are correct
c.
(b), (c) and (e) are correct
d.
(c), (d) and (e) are correct
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With regard to insulin choose correct options. (a)C-peptide is not present in mature insulin. (b)The insulin produced by rDNA technology has C-peptide. (c)The pro-insulin has C-peptide. (d)A-peptide and B-peptide of insulin are interconnected by disulphide bridges. Choose the correct answer from the options given below.
a.
(b) and (c) only
b.
(a), (c) and (d) only
c.
(a) and (d) only
d.
(b) and (d) only
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Match List - I with List - II. (a) Metamerism (i) Coelenterata (b) Canal system (ii) Ctenophora (c) Comb plates (iii) Annelida (d) Cnidoblasts (iv) Porifera. Choose the correct answer from the options given below.
a.
(iii)(iv)(i)(ii)
b.
(iii)(iv)(ii)(i)
c.
(iv)(i)(ii)(iii)
d.
(iv)(iii)(i)(ii)
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For effective treatment of the disease, early diagnosis and understanding its pathophysiology is very important. Which of the following molecular diagnostic techniques is very useful for early detection?
a.
Southern Blotting Technique
b.
ELISA Technique
c.
Hybridization Technique
d.
Western Blotting Technique
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Match the following : (a) Physalia (i) Pearl oyster (b) Limulus (ii) Portuguese Man of War (c) Ancylostoma (iii) Living fossil (d) Pinctada (iv) Hookworm
a.
(iv)(i)(iii)(ii)
b.
(ii)(iii)(iv)(i)
c.
(i)(iv)(iii)(ii)
d.
(ii)(iii)(i)(iv)
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Veneral diseases can spread through : (a) Using sterile needles (b) Transfusion of blood from infected person (c) Infected mother to foetus (d) Kissing (e) Inheritance
a.
(b), (c) and (d) only
b.
(b) and (c) only
c.
(a) and (c) only
d.
(a), (b) and (c) only
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Match List-I with List-II: (a) Vaults (i) Entry of sperm through Cervix is blocked (b) IUDs (ii) Removal of Vas deferens (c) Vasectomy (iii) Phagocytosis of sperms within the Uterus (d) Tubectomy (iv) Removal of fallopian tube
a.
(i)(iii)(ii)(iv)
b.
(ii)(iv)(iii)(i)
c.
(iii)(i)(iv)(ii)
d.
(iv)(ii)(i)(iii)
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During the process of gene amplification using PCR, if very high temperature is not maintained in the beginning, then which of the following steps of PCR will be affected first?
a.
Extension
b.
Denaturation
c.
Ligation
d.
Annealing
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Match List - I with List - II.
(a) Aspergillus niger (i) Acetic Acid
(b) Acetobacter aceti (ii) Lactic Acid
(c) Clostridium butylicum (iii) Citric Acid
(d) Lactobacillus (iv) Butyric Acid
a.
(1)(i)(ii)(iii)(iv)
b.
(2)(ii)(iii)(i)(iv)
c.
(3)(iv)(ii)(i)(iii)
d.
(4)(iii)(i)(iv)(ii)
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Following are the statements with reference to ‘lipids’.
(a) Lipids having only single bonds are called unsaturated fatty acids.
(b) Lecithin is a phospholipid.
(c) Trihydroxy propane is glycerol.
(d) Palmitic acid has 20 carbon atoms including carboxyl carbon.
(e) Arachidonic acid has 16 carbon atoms.
a.
(c) and (d) only
b.
(b) and (c) only
c.
(b) and (e) only
d.
(a) and (b) only
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Match List - I with List - II.
(a) Filariasis (i) Haemophilus influenzae
(b) Amoebiasis (ii) Trichophyton
(c) Pneumonia (iii) Wuchereria bancrofti
(d) Ringworm (iv) Entamoeba histolytica
a.
(1)(iii)(iv)(i)(ii)
b.
(2)(i)(ii)(iv)(iii)
c.
(3)(ii)(iii)(i)(iv)
d.
(4)(iv)(i)(iii)(ii)
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Match List - I with List - II.
(a) Adaptive radiation (i) Selection of resistant varieties due to excessive use of herbicides and pesticides
(b) Convergent evolution (ii) Bones of forelimbs in Man and Whale
(c) Divergent evolution (iii) Wings of Butterfly and Bird
(d) Evolution by anthropogenic action (iv) Darwin Finches
a.
(1)(iii)(ii)(i)(iv)
b.
(2)(ii)(i)(iv)(iii)
c.
(3)(i)(iv)(iii)(ii)
d.
(4)(iv)(iii)(ii)(i)
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During muscular contraction which of the following events occur?
(a) ‘H’ zone disappears
(b) ‘A’ band widens
(c) ‘I’ band reduces in width
(d) Myosine hydrolyzes ATP, releasing the ADP and Pi
(e) Z-lines attached to actins are pulled inwards
a.
(a), (b), (c), (d) only
b.
(b), (c), (d), (e) only
c.
(b), (d), (e), (a) only
d.
(a), (c), (d), (e) only
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Assertion (A): A person goes to high altitude and experiences ‘altitude sickness’ with symptoms like breathing difficulty and heart palpitations.
Reason (R): Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen.
a.
Both (A) and (R) are true but (R) is not the correct explanation of (A)
b.
(A) is true but (R) is false
c.
(A) is false but (R) is true
d.
Both (A) and (R) are true and (R) is the correct explanation of (A)
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Assertion (A) : A person goes to high altitude and experiences ‘altitude sickness’ with symptoms like breathing difficulty and heart palpitations. Reason (R) : Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen. In the light of the above statements, choose the correct answer from the options given below.
a.
Both (A) and (R) are true but (R) is not the correct explanation of (A)
b.
(A) is true but (R) is false
c.
(A) is false but (R) is true
d.
Both (A) and (R) are true and (R) is the correct explanation of (A)
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Following are the statements about prostomium of earthworm.
(a) It serves as a covering for mouth.
(b) It helps to open cracks in the soil into which it can crawl.
(c) It is one of the sensory structures.
(d) It is the first body segment.
a.
(a), (b) and (d) are correct
b.
(a), (b), (c) and (d) are correct
c.
(b) and (c) are correct
d.
(a), (b) and (c) are correct
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Following are the statements about prostomium of earthworm. (a) It serves as a covering for mouth. (b) It helps to open cracks in the soil into which it can crawl. (c) It is one of the sensory structures. (d) It is the first body segment. Choose the correct answer from the options given below.
a.
(a), (b) and (d) are correct
b.
(a), (b), (c) and (d) are correct
c.
(b) and (c) are correct
d.
(a), (b) and (c) are correct
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Match List - I with List - II: (a) Scapula (i) Cartilaginous joints (b) Cranium (ii) Flat bone (c) Sternum (iii) Fibrous joints (d) Vertebral column (iv) Triangular flat bone
a.
(1) (ii) (iii) (iv) (i)
b.
(2) (iv) (ii) (iii) (i)
c.
(3) (iv) (iii) (ii) (i)
d.
(4) (i) (iii) (ii) (iv)
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Match List - I with List - II: (a) Allen's Rule (i) Kangaroo rat (b) Physiological adaptation (ii) Desert lizard (c) Behavioural adaptation (iii) Marine fish at depth (d) Biochemical adaptation (iv) Polar seal
a.
(1) (iv) (i) (iii) (ii)
b.
(2) (iv) (i) (ii) (iii)
c.
(3) (iv) (iii) (ii) (i)
d.
(4) (iv) (ii) (iii) (i)
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Identify the types of cell junctions that help to stop the leakage of the substances across a tissue and facilitation of communication with neighbouring cells via rapid transfer of ions and molecules.
a.
Tight junctions and Gap junctions, respectively.
b.
Adhering junctions and Tight junctions, respectively.
c.
Adhering junctions and Gap junctions, respectively.
d.
Gap junctions and Adhering junctions, respectively.
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