ATP is a
nucleotide
nucleosome
nucleoside
purine
Which one of the following statements about cytochrome 450 is wrong ?
It contains iron
It is a coloured cell
It has an important role in metabolism
It is an enzyme involved in oxidation reactions.
Which is an essential amino acid ?
Serine
Aspartic acid
Glycine
Phenylalanine
One of the similarities between DNA and RNA is that both
are polymers of nucleotides
are capable of replicating
have similar sugars
have similar pyrimidine bases
Glycogen is a polymer of
galactose
glucose
fructose
sucrose
Cellulose, the most important constituent of plant cell wall is made of
unbranched chain of glucose molecules linked by 1,4 glycosidic bond
branched chain of glucose molecules linked by glycosidic bond in straight chain and glycosidic bond at the site of branching
unbranched chain of glucose molecules linked by glycosidic bond
branched chain of glucose molecules linked by glycosidic bond at the site of branching.
Which one of the following is not a constituent of cell membrane ?
Cholesterol
Glycolipids
Proline
Phospholipids
Living cell contains 60-75% water. Water present in human body is
60-65%
50-55%
75-80%
65-70%
Which of the following is a reducing sugar ?
Galactose
Gluconic acid
Sucrose
The pyrenoids are made up of
proteinaceous centre and starchy sheath
core of protein surrounded by fatty sheath
core of starch surrounded by sheath of protein
core of nucleic acid surrounded by protein sheath
