Multiple Choice Questions

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The coding segment of DNA is called

  • muton

  • intron

  • codon

  • exon


D.

exon

The coding segment of DNA is called exon. During gene expression, DNA gets translated to mRNA, which contains coding and non-coding nucleotide triplets. Non-coding sequences are removed from RNA by splicing.


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The element, essential for synthesis of protein in plants, is

  • copper

  • nitrogen

  • magnesium

  • iron


Penicillin antibiotic is obtained from

  • fungi

  • algae

  • bacteria

  • blue-green algae


Which of the following is not a micronutrient?

  • Sodium

  • Copper

  • Silicon

  • Calcium


Which one of the following is not a natural fibre?

  • Silk

  • Acrylic

  • Cotton

  • Jute


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Which one of the following is not a source of energy?

  • Protein

  • Fat

  • Vitamin

  • Carbohydrate


Ginger is the modification of

  • root

  • leaf

  • stem

  • fruit


True fruits develop from

  • thalamus

  • petal

  • ovary

  • sepal


Plant which reproduces by means of spores instead of seeds is

  • coriander

  • fern

  • mustard

  • petunia


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Which one of the following is not a non-communicable disease?

  • Hypertension

  • Arthritis

  • Rickets

  • Cholera