DNA is composed of repeating units of ________________.
ribonucleosides
deoxyribonucleosides
ribonucleotides
deoxyribonucleotides
The basic unit of nucleic acid is ______________.
purine, pyrimidine and phosphate
purine, sugar and phosphate
nitrogen base, sugar and phosphate
pyrimidine, sugar and phosphate
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
A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is _________________.
120
240
60
480
A nucleotide is formed of ________________.
pentose sugar
nucleoid
nucleoside
nucleotide
Living cell contains 60 - 75% water. Water present in human body is ________________.
60 - 65%
50 - 55%
75 - 80%
65 - 70%
Which is correct about nucleic acid?
DNA
RNA
DNA and RNA
spherosomes
Most diverse macromolecules, found in the cell both physically and chemically are _____________.
Proteins
carbohydrates
nucleic acids
lipids
RNA does not possess ________________.
adenine
uracil
thymine
cytosine
Mineral associated with cytochrome is ________________.
Cu
Mg
Fe and Mg
Fe and Cu
