251.

Write the name of vitamin whose deficiency causes bone deformities in children.

Which of the two components of starch is water soluble?

Deficiency of which vitamin causes night-blindness ?

Name the base that is found in nucleotide of RNA only.

Glucose on reaction with HI gives n-hexane. What does it suggest about the structure of glucose?

What are three types of RNA molecules which perform different functions?

What is meant by (i) peptide linkage (ii) biocatalysts?

Write any two reactions of glucose which cannot be explained by the open chain structure of glucose molecule.

What is essentially the difference between α-form of glucose and β-form of glucose? Explain.