In polysaccharides,the linkage connecting monosaccharide units is called:

Which of the following pentoses will be optically active?
$I$: $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$
$II$: $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$
$III$: $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$

Which of the following is the correct structure of adenosine?

Which of the following is not a biopolymer?

Which of the following is a reducing sugar?

What is invert sugar?