List of top Biology Questions asked in Indian Institute Of Technology Joint Admission Test for MSc

Which of the following bacterial component contains "dipicolinic acid"?

Bacteria containing a tuft of flagella that comes out from one pole is called___.

The bacterium that can tolerate high concentrations of salt and also ferment mannitol is

In bacteria, the a fuctor that plays a major role in transcription during the stationary phase is

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

Match the following

Group I	Group II
Streptomycin	Inhibits beta-subunit of RNA polymerase
Cycloheximide	Inhibits peptidyl transferase activity of 505 subunit
Rifamycin	Inhibits peptidyl transferase activity of 605 subunit
Chloramphenicol	Inhibits binding of formyl methionine tRNA to ribosome

In a honey bee population, the workers are infertile but protect the queen from intruders and help in reproduction. This is an example of

The number of "Barr Bodies" present in a somatic cell of a woman suffering from Turner syndrome is___.

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

Identify the correct pairs:
(i) Thermophile            (a) grows optimal at 37 °C
(ii) Mesophile                 (b) grows optimal at low temperature
(iii) Psychrophile             (c) grows optimal at high saline conditions
(iv) Halophile                  (d) grows optimal at 67 °C

Which among the following belongs to the family "Retroviridac"?

An organism that causes obstruction of lymphatic system in humans is___

A frameshift mutation is caused by___

Indeterminate growth in plants is due to the presence of perpetually undifferentiated tissues, called as____

The fossilization process in which mineral rich water penetrates through the pores of decomposed organic matter is known as___.

In a nephron,___ follows the ascending limb of the "loop of Henle".

The enriched media used to facilitate the growth of fastidious microorganisms are

Transfer of plasmids into animal cells can be achieved by