The pyrenoids are made up of _______________.
proteniaceous centre and starchy sheath
core of protein surrounded by fatty sheath
core of starch surrounded by fatty sheath
core of nucleic acid surrounded by protein sheath
Which is correct about nucleic acid?
DNA
RNA
DNA and RNA
spherosomes
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
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
In RNA, thymine is replaced by ____________.
adenine
guanine
cytosine
uracil
The nitrogenous organic base purine occurring in RNA is _____________.
thymine
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)
A nucleotide is formed of ________________.
pentose sugar
nucleoid
nucleoside
nucleotide
Glycogen is a polymer of ________________.
galactose
glucose
fructose
sucrose
