Which one of the following polymers is prepared by addition polymerisation ?
a.
Teflon
Correct Answer
b.
Nylon-66
c.
Novolac
d.
Dacron
Step-by-Step AI Explanation
Verified Method
Teflon is prepared by the addition polymerization of tetrafluoroethene. Others are condensation polymers.
Q68mcq
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 true.
b.
Both Statement I and Statement II are false.
Correct Answer
c.
Statement I is correct but Statement II is false.
d.
Statement I is incorrect but Statement II is true.
Step-by-Step AI Explanation
Verified Method
Aspirin and Paracetamol are non-narcotic analgesics. Morphine and Heroin are narcotic analgesics. Both statements are false.
Q95mcq
Match List - I with List - II regarding atmospheric reactions.
Match List - I with List - II. (a) Protoplast fusion (i) Totipotency (b) Plant tissue culture (ii) Pomato (c) Meristem culture (iii) Somaclones (d) Micropropagation (iv) Virus free plants
a.
(1)(iii)(iv)(ii)(i)
b.
(2)(ii)(i)(iv)(iii)
c.
(3)(iii)(iv)(i)(ii)
d.
(4)(iv)(iii)(ii)(i)
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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.
Xenogamy
b.
Geitonogamy
c.
Chasmogamy
d.
Cleistogamy
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Match List - I with List - II. (a) Cohesion (i) More attraction in liquid phase (b) Adhesion (ii) Mutual attraction among water molecules (c) Surface tension (iii) Water loss in liquid phase (d) Guttation (iv) Attraction towards polar surfaces
a.
(1)(ii)(iv)(i)(iii)
b.
(2)(iv)(iii)(ii)(i)
c.
(3)(iii)(i)(iv)(ii)
d.
(4)(ii)(i)(iv)(iii)
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Match List - I with List - II regarding water transport mechanisms.
(a) Cohesion (i) More attraction in liquid phase
(b) Adhesion (ii) Mutual attraction among water molecules
(c) Surface tension (iii) Water loss in liquid phase
(d) Guttation (iv) Attraction towards polar surfaces
a.
(1)(ii)(iv)(i)(iii)
b.
(2)(iv)(iii)(ii)(i)
c.
(3)(iii)(i)(iv)(ii)
d.
(4)(ii)(i)(iv)(iii)
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Complete the flow chart on central dogma (DNA -> (a) -> RNA -> (b) -> Protein; DNA -> (c) -> DNA). Wait: (a)-Replication; (b)-Transcription; (c)-Translation? No, evaluate: (a)=Replication, (b)=Transcription, (c)=Translation is standard model logic. Re-evaluating text options: (3) (a)-Replication; (b)-Transcription; (c)-Translation; (d)-Protein
Match List - I with List - II regarding plant tissues.
(a) Lenticels (i) Phellogen
(b) Cork cambium (ii) Suberin deposition
(c) Secondary cortex (iii) Exchange of gases
(d) Cork (iv) Phelloderm
a.
(1)(iv)(i)(iii)(ii)
b.
(2)(iii)(i)(iv)(ii)
c.
(3)(ii)(iii)(iv)(i)
d.
(4)(iv)(ii)(i)(iii)
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Match Column - I with Column - II regarding nitrogen cycle.
(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
a.
(1)(ii)(iv)(i)(iii)
b.
(2)(i)(ii)(iii)(iv)
c.
(3)(iii)(i)(iv)(ii)
d.
(4)(iv)(iii)(ii)(i)
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Match List - I with List - II regarding cell cycle phases.
(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.
(1)(iii)(ii)(i)(iv)
b.
(2)(iv)(ii)(iii)(i)
c.
(3)(iv)(i)(ii)(iii)
d.
(4)(ii)(iv)(iii)(i)
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Nowadays it is possible to detect the mutated gene causing cancer by allowing a radioactive probe to hybridise its complimentary DNA in a clone of cells, followed by its detection using autoradiography because :
a.
mutated gene partially appears on a photographic film.
b.
mutated gene completely and clearly appears on a photographic film.
c.
mutated gene does not appear on a photographic film as the probe has no complementarity with it.
d.
mutated gene does not appear on photographic film as the probe has complementarity with it.
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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.
it will not be able to confer ampicillin resistance to the host cell.
b.
the transformed cells will have the ability to resist ampicillin as well as produce β-galactoside.
c.
it will lead to lysis of host cell.
d.
it will be able to produce a novel protein with dual ability.
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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
a.
(1)(iv)(iii)(i)(ii)
b.
(2)(iii)(iv)(i)(ii)
c.
(3)(iii)(iv)(ii)(i)
d.
(4)(iv)(i)(ii)(iii)
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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.
8
b.
16
c.
4
d.
32
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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.
Western Blotting Technique
b.
Southern Blotting Technique
c.
ELISA Technique
d.
Hybridization Technique
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Match the following: (a) Physalia (b) Limulus (c) Ancylostoma (d) Pinctada. List I with List II: (i) Pearl oyster (ii) Portuguese Man of War (iii) Living fossil (iv) Hookworm
a.
(1)(ii)(iii)(i)(iv)
b.
(2)(iv)(i)(iii)(ii)
c.
(3)(ii)(iii)(iv)(i)
d.
(4)(i)(iv)(iii)(ii)
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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.
(1)(iv)(ii)(i)(iii)
b.
(2)(i)(iii)(ii)(iv)
c.
(3)(ii)(iv)(iii)(i)
d.
(4)(iii)(i)(iv)(ii)
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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.
(1)(a), (b) and (c) only
b.
(2)(b), (c) and (d) only
c.
(3)(b) and (c) only
d.
(4)(a) and (c) only
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The organelles that are included in the endomembrane system are:
a.
Endoplasmic reticulum, Mitochondria, Ribosomes and Lysosomes
b.
Endoplasmic reticulum, Golgi complex, Lysosomes and Vacu Lysosomes and Vacu Lysosomes and Vacu Lysosomes and Vacu Lysosomes and Vacu Lysosomes and Vacu Lysosomes and Vacu Lysosomes and Vacu Lysosomes and Vacu Lysosomes and Vacu Lysosomes and Vacu Lysosomes and Vacuuu Lysosomes and Vacuuuuuu Lysosomes and Vacu Lysosomes and Vacuuuuuuuuuuuuuuuuuuu Lysosomes and Vacuu Lysosomes and Vacuoles
c.
Golgi complex, Mitochondria, Ribosomes and Lysosomes
d.
Golgi complex, Endoplasmic reticulum, Mitochondria and Lysosomes
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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.
a.
(1)(b) and (d) only
b.
(2)(b) and (c) only
c.
(3)(a), (c) and (d) only
d.
(4)(a) and (d) only
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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.
Annealing
b.
Extension
c.
Denaturation
d.
Ligation
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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.
(c), (d) and (e) are correct
b.
(a), (b) and (c) are correct
c.
(a), (d) and (e) are correct
d.
(b), (c) and (e) are correct
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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. Choose the correct answer from the options given below.
a.
(a), (c), (d), (e) only
b.
(a), (b), (c), (d) only
c.
(b), (c), (d), (e) only
d.
(b), (d), (e), (a) only
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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.
Gap junctions and Adhering junctions, respectively.
b.
Tight junctions and Gap junctions, respectively.
c.
Adhering junctions and Tight junctions, respectively.
d.
Adhering junctions and Gap junctions, respectively.
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Statement I : The codon ‘AUG’ codes for methionine and phenylalanine. Statement II : ‘AAA’ and ‘AAG’ both codons code for the amino acid lysine. In the light of the above statements, choose the correct answer from the options given below.
a.
Both Statement I and Statement II are true
b.
Both Statement I and Statement II are false
c.
Statement I is correct but Statement II is false
d.
Statement I is incorrect but Statement II is true
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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) (i)(iii)(ii)(iv)
b.
(2) (ii)(iii)(iv)(i)
c.
(3) (iv)(ii)(iii)(i)
d.
(4) (iv)(iii)(ii)(i)
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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) (iv)(i)(iii)(ii)
b.
(2) (iii)(iv)(i)(ii)
c.
(3) (i)(ii)(iv)(iii)
d.
(4) (ii)(iii)(i)(iv)
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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) (iv)(i)(iii)(ii)
b.
(2) (iii)(iv)(i)(ii)
c.
(3) (i)(ii)(iv)(iii)
d.
(4) (ii)(iii)(i)(iv)
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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 (c) are correct
b.
(a), (b) and (d) are correct
c.
(a), (b), (c) and (d) are correct
d.
(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.
a.
(1) (a), (b) and (c) are correct
b.
(2) (a), (b) and (d) are correct
c.
(3) (a), (b), (c) and (d) are correct
d.
(4) (b) and (c) are correct
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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.
(1) Both (A) and (R) are true and (R) is the correct explanation of (A)
b.
(2) Both (A) and (R) are true but (R) is not the correct explanation of (A)
c.
(3) (A) is true but (R) is false
d.
(4) (A) is false but (R) is true
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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)(ii)(iii)(i)
b.
(2) (iv)(i)(iii)(ii)
c.
(3) (iv)(i)(ii)(iii)
d.
(4) (iv)(iii)(ii)(i)
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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) (iv)(iii)(ii)(i)
b.
(2) (iii)(ii)(i)(iv)
c.
(3) (ii)(i)(iv)(iii)
d.
(4) (i)(iv)(iii)(ii)
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