List of top Biology Questions

The enriched media used to facilitate the growth of fastidious microorganisms are
A random fluctuation in gene frequency is called
The osmotic potential (Ψ) of pure water is___ MPa.
A frameshift mutation is caused by___
For an enzyme following Michaelis-Menten kinetics, when \([S]=K_M\) then, the velocity v is 
([S] is substrate concentration, \(K_M\) is Michaelis constant, \(V_{max}\) is maximal velocity)
In a nephron,___ follows the ascending limb of the "loop of Henle".
Match the following
Group IGroup II
StreptomycinInhibits beta-subunit of RNA polymerase
CycloheximideInhibits peptidyl transferase activity of 505 subunit
RifamycinInhibits peptidyl transferase activity of 605 subunit
ChloramphenicolInhibits binding of formyl methionine tRNA to ribosome
A single copy of an allele in sickle-cell heterozygous individuals reduces the frequency and severity of malaria. The reason for this is
Which of the following acts as wound hormones in plants?
Indeterminate growth in plants is due to the presence of perpetually undifferentiated tissues, called as____
Which of the following is involved in innate immune response in higher mammals?
Match the bacterial structure to function
(i)Cell wall(a)Virulence factor
(ii)Glycocalyx(b)Selective permeability
 (c)Attachment to surfaces
  (d)Protection from osmotic lysis
Which of the following are produced by Mangrove trees to survive in the waterlogged swampy forests?
The number of "Barr Bodies" present in a somatic cell of a woman suffering from Turner syndrome is___.
The zone of a pond system where respiration is more than production is called as___
A man having a dominant genetic trait (TT genotype) can laste phenylthiocarbamide (PTC), marries a woman who cannot taste PTC. The PTC tasting ability of their biological son and daughter is
A rise in cytosolic calcium ion concentration just after fertilization in a sea urchin egg leads to
How many pairs of autosomal chromosomes are there in normal humans?
Which of the following enzymes is absent in a person suffering from Alkaptonuria?
An organism that causes obstruction of lymphatic system in humans is___
Which of the following is a glycolipid?
Archaeal cell membranes contain lipids that are
How many GTP molecules are required for the translocation of tRNA from P site to E site during translation elongation process in bacteria?
Which of the following bacterial component contains "dipicolinic acid"?
In a denaturing polyacrylamide gel electrophoresis experiment, pure intact adult human hemoglobin will yield (number) bands.