Antibodies in our body are complex
steroids
prostaglandins
glycoproteins
lipoproteins
One turn of the helix in a B-form DNA is approximately
0.34 nm
3.4 nm
2 nm
20 nm
DNA is composed of repeating units of
ribonucleosides
deoxyribonucleosides
ribonucleotides
deoxyribonucleotides
The two polynucleotide chains in DNA are
parallel
discontinuous
antiparallel
semiconservative
Due to discovery of which of the following in 1980 the evolution was termed as RNA world ?
mRNA, tRNA, rRNA synthesize proteins
In some virus RNA is genetic material
RNA have enzymatic property
RNA is not found in all cells
Geners are packaged into a bacterial chromosome by
histones
basic proteins
acidic proteins
actin
Spoilage of oil can be detected by which fatty acid ?
Oleic acid
Linolenic acid
Linoleic acid
Erusic acid
About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and
phosphorus and sulphur
sulphur and magnesium
magnesium and sodium
calcium and phosphorous
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 one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it ?
Thymine, Uracil - Pyrimidines
Uracil, Cytosine - Pyrimidines
Guanine, Adenine - Purines
Adenine, Thymine - Purines
