Adenosine is an example of
nucleotide
purine base
pyrimidine base
nucleoside
D.
nucleoside
Adenosine is an example of nucleoside. A nucleoside contains only two basic component of nucleic acid i.e a pentose sugar and a nitrogeneous base. When adenine [purine base] combines with ribose sugar, adenosine is formed. A nucleotide contains all the three basic component of nucleic acids i e 'a phosphoric acid group, a pentose sugar and a nitrogeneous base (purines, pyrimidiness).
Pick the wrong statements from the following.
Deficiency of vitamin B6 (pyridoxume) results in convulsions.
Sources of vitamin are yeast, milk, green vegetables and cereals.
deficiency of vitamin D cause xerophthalmia
Consumption of citrus fruits and green leafy vegetbles in food prevents scurvy.
The statement that is not correct is
Aldose or ketose sugars in alkailne medium do not isomerise
Carbohydrates are optically active
Pentaacetate of glucose does not react with hydroxylamine
Lactose has glycosidc linkage between C4 of glucose and C1 of galactose unit.
Cheilosis and digestive disorder are due to the deficiency of
thiamine
ascorbic acid
riboflavin
pyridoxine
Glycogen is
a polymer of β-D-glucose units
a structural polysaccharide
structurally very much similar to amylopectin
structurally similar to amylopectin but extensively branched
The glycosidic linkage present in sucrose is between
C-1 of -β- glucose and C-4 of α- glucose
C-1 of α- glucose and C-4 of β-fructose
C-1 of α- glucose and C-4 of α- glucose
C-1 of α- glucose and C-2 of β-fructose
Hormones are secreted by ductless glands of human body. Iodine containing hormone is
Adrenoline
Thyroxine
Testosterone
Insulin
Which of the following is correct about H-bonding in DNA?
A - T; G - C
A - G; T - C
G - T; A - C
A - A; T - T
