Multiple Choice Questions

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Which one is component of Ornithine cycle?

  • Ornithine, citrulline and alanine

  • Ornithine, citrulline and arginine

  • Amino acid are not used

  • Ornithine, citrulline and fumaric acid


B.

Ornithine, citrulline and arginine

Ornithine cycle or urea cycle or Krebs- Henseleit cycle was discovered by Han Krebs and Kurt Henseleit. It takes place in liver cells and the main components are arginine, ornithine and citrulline.


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Which one is component of Ornithine cycle?

  • Ornithine, citrulline and alanine

  • Ornithine, citrulline and arginine

  • Amino acids are not used

  • Ornithine, citrulline and fumaric acid


Which of the following is the simplest amino acid?

  • Tyrosine

  • Asparagine

  • Glycine

  • Alanine


Which of the following vitamins is water soluble as well as an antioxidant?

  • Vitamin- B1

  • Vitamin-A

  • Vitamin-D

  • Vitamin-C


Nucleotide are building blocks of nucleic acids, nucleotide is a composite molecule formed by

  • (base-sugar-phosphate)n

  • base-sugar-OH

  • base-sugar-phosphate

  • sugar-phosphate


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Which vitamin should not be stored?

  • Calciferol

  • Retinol

  • Niacin

  • Ascorbic acid


Which compound has a very important role in prebiotic evolution?

  • Sulphur dioxide

  • Nitric oxide

  • Methane

  • Sulphur trioxide


Paraffin wax is

  • ester

  • acid

  • monohydric alcohol

  • cholesterol


Protein present in silk fibre is

  • caesin

  • keratin

  • elastin

  • fibroin


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Which one is the sweetest suagr?

  • Glucose

  • Fructose

  • Sucrose

  • Maltose


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