Which one of the following bases is not present in DNA?
Quinoline
Adenine
Cytosine
Cytosine
A.
Quinoline
Quinoline is an alkaloid, it is not present in DNA. DNA has four nitrogen bases in adenine, guanine, cytosine and thymine
Deficiency of which vitamin causes degeneration of spinal cord?
E
K
B12
A
C.
B12
Degeneration of spinal cord is also known as lichtheims disease. It arises due to deficiency of vitamin-B12 (i.e., cyanocobalamine, C63H88N14PCO). It is usually associated with pernicious anemia. Sources of vitamin-B12 are liver of ox, sheep, pig, fish, etc.
One mole of stachyose on hydrolysis yields
1 mole of glucose+ 1 mole of fructose+ 2 mole of galactose
2 mole of glucose + 1 mole of fructose + 1 mole of galactose
1 mole of glucose+ 2 mole of fructose+ 1 mole of galactose
2 mole of glucose+ 2 mole of fructose
A.
1 mole of glucose+ 1 mole of fructose+ 2 mole of galactose
One mole of stachyose on hydrolysis yields one mole of glucose, one mole of fructose and two moles of galactose.
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