Class XII

When nucleoside is linked to phosphoric acid at 5ꞌ – position of sugar moiety, we get a:
  1. Ribonuceic acid
  2. Deoxyribonuceic acid
  3. a nucleotide
  4. a nucleoside
Which of the following is most soluble in water?
  1. Lipid
  2. Cellulose
  3. amino acid
  4. vitamin D
The carrier of hereditary character is.
  1. Cytochromes
  2. Nucleosides
  3. Lipids
  4. Nucleotides
Curdling of milk which is caused due to
  1. formation of lactic acid by the bacteria present in milk.
  2. formation of lactic acid by the bacteria present in milk. and denaturation
  3. primary structure is disturbed
  4. denaturation
Night blindness is caused by the deficiency of
  1. vitamin B
  2. vitamin A
  3. vitamin C
  4. vitamin D
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