How do expimers differ from anomers ?

Glucose and fructose give the same osazone ? Explain.

Give reason for the following :
(i) On electrolysis in acidic solution, aminoacids migrate towards cathode while in alkaline solution these migrate towards anode.
(ii) The mononamino monocarboxylic acids have two pK values.

What forces are responsible for the stability of \(\alpha\) - helix ? Why is it named as 3.6₁₃ helix?

The K_a and K_b values of \(\alpha\) - amino acids are very low. Explain.

Write the structure of alanine at pH = 2 and pH = 10.

Which of the following will reduce Tollens ' reagent ? Explain.

In 1985, a British chemist Alec [effryo developed a technique called DNA finger printings. We know the every individual has unique fingerprints. They appear as circles on the tips of fingers and are used for the identification of individuals. It is arranged that every person has its own sequence of bases in DNA. It can not match with those of any other person.
(i) What is the full form of DNA?
(ii) Which base is present in DNA and not in RNA ?
(iii) Which base is present in RNA and not in DNA?
(iv) What value does Alec jeffryo have?

After watching a programme on TV about the adverse effect of junk food and soft drinks on the health of school children, Sonali, a student of class XII, discussed the issue with the school principal. Principal immediately instructed the canteen contractor to replace the fast food with fibre and vitamin rich food like sprouts, salad, fruits etc. This decision was welcomed by the parents and the students.
After reading the above passage, answer the following questions:
(i) What values are expressed by Sonali and the principal of the school?
(ii) Give two examples of water soluble vitamins.

Shanti a domestic helper of Mrs. Anuradha, fainted while mopping the floor. Mrs. Anuradha immediately took her to the nearby hospital where she was diagnosed to be severely anaemic. The doctor prescribed an iron rich diet and multivitamins supplement to her. Mrs. Anuradha supported her 'financially to get the medicines. After a month, Shanti was diagnosed to be normal.
After reading the above passage, answer the following questions:
(i) What values are displayed by Mrs. Anuradha ?
(ii) Name the vitamins whose deficiency causes pernicious anaemia.
(iii) Give an example of water soluble vitamin.