Living cell contains 60 - 75% water. Water present in human body is ________________.
60 - 65%
50 - 55%
75 - 80%
65 - 70%
In which one of the following groups, all the three are example of polysaccharides?
starch, glycogen, cellulose
sucrose, maltose, glucose
glucose, fructose, lactose
Galactose, starch, sucrose
Which is correct about nucleic acid?
DNA
RNA
DNA and RNA
spherosomes
A nucleotide is formed of ________________.
pentose sugar
nucleoid
nucleoside
nucleotide
In double helix of DNA, the two DNA strands are ______________.
coiled around a common axis
coiled around each other
coiled differently
coiled over protein sheath
The basic unit of nucleic acid is ______________.
purine, pyrimidine and phosphate
purine, sugar and phosphate
nitrogen base, sugar and phosphate
pyrimidine, sugar and phosphate
A polysaccharide, which is synthesized and stored in liver cells, is _____________.
peptide bond
covalent bond
hydrogen bond
phosphodiester bond
Which is not consistent with double helical structure of DNA?
A = T, C ≡ G
Denisty of DNA decreases on heating
A + T/C + G IS NOT CONSTANT
Both (a) and (b)
Mineral associated with cytochrome is ________________.
Cu
Mg
Fe and Mg
Fe and Cu
Which is wrong about nucleic acids?
DNA is single stranded in some viruses
RNA is single stranded occasionally
Length of one helix is 45 Å in B -DNA
One turn of Z - DNA has 12 bases
