Which is correct about nucleic acid?
DNA
RNA
DNA and RNA
spherosomes
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
Adenine is ________________.
purine
pyrimidine
nucleoside
nucleotide
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 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
Mineral associated with cytochrome is ________________.
Cu
Mg
Fe and Mg
Fe and Cu
The four elements making 99% of living systems are ______________.
CHOS
CHOP
CHON
CNOP
Amino acids are produced from _________________.
proteins
fatty acids
essential oils
α - keto acids
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)
Most diverse macromolecules, found in the cell both physically and chemically are _____________.
Proteins
carbohydrates
nucleic acids
lipids
