Multiple Choice Questions

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Seminal plasma in human is rich in 

  • fructose, calcium and certain enzymes

  • fructose and calcium but has no enzymes

  • glucose and certain enzymes but has no calcium

  • glucose and certain enzymes but has no calcium


A.

fructose, calcium and certain enzymes

Seminal plasma is composed of the fluid and sperms from the vas deferens (about 10% of the total), fluid from the seminal vesicles (almost 60 percent), fluid from the prostate. gland (about 30 percent) and a few mucous glands, especially the bulbourethral glands. It contains calcium citrate ion, phosphate ion, a clotting enzyme, profibrinolysin, fructose, citrate, inositol, prostaglandins several proteins, etc,

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Whose experiments cracked the DNA  and discovered unequivocally that is genetic code is a triplet?

  • Nirenberg and Mathaei

  • Hershey and Chase

  • Morgan and Sturtevant

  • Morgan and Sturtevant

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Removal of introns and joining the exons in a defined order in transcription unit is called

  • splicing

  • tailing

  • transformation

  • transformation

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Synapsis occurs between 

  • a male and female gamete

  • mRNA and ribosomes

  • spindle fibres and centromere

  • spindle fibres and centromere

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Which one of the following is commonly used in the transfer of foreign DNA into crops plants?

  • Trichoderma hazianum

  • Meloidogyne incognita

  • Agrobacterium tumefaciens

  • Agrobacterium tumefaciens

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Which one is the wrong pairing for the disease and its causal organism?

  • Late blight of potato - Alternaria solani

  • Black rust of wheat - puccinia graminis

  • Loose smut of wheat - Ustilago nuda

  • Loose smut of wheat - Ustilago nuda

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Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem?

  • Phytoplankton 

  • Fish

  • Zoonplankton

  • Zoonplankton

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Use of antihistamines and steroids give a quick relief from

  • allergy 

  • nausea

  • cough

  • cough

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select the incorrect statement from the following 

  • Linkage is an exception to the principle of independent assortment in heredity

  • galactosemia is an inborn error of metabolism

  • small population size results in a random genetic drift in a population

  • small population size results in a random genetic drift in a population

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What is true about Bt toxin

  • The inactive protoxin gets converted into active form in the insect gut

  • Bt protein exists as active toxin in the bacillus

  • The activated toxin enters the ovaries of the pets to sterilise it and thus prevent its multiplication

  • The activated toxin enters the ovaries of the pets to sterilise it and thus prevent its multiplication

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