List of top Biology Questions asked in IIT JAM BT

In the β€˜Southern blot’ technique, which of the following reagents is used to detect the presence of a desired DNA fragment?
Match the microorganisms in Group I with the human disease in Group II

Group I Group II
P) Treponema pallidum 1) Sleeping sickness
Q) Trypanosoma cruzi 2) Whooping cough
R) Trypanosoma gambiense3) Chagas disease
S) Bordetella pertussis 4) Syphilis
Which one of the following statements about the G1 checkpoint of eukaryotic cell division cycle is INCORRECT?
Which of the following statement(s) is/are correct about telophase?
The relationship between birth weight and degree of survival $ (log \frac{ π‘ π‘’π‘Ÿπ‘£π‘–π‘£π‘œπ‘Ÿπ‘  }{ π‘›π‘œπ‘›βˆ’π‘ π‘’π‘Ÿπ‘£π‘–π‘£π‘œπ‘Ÿπ‘ })$ in 6908 human births in an obstetric hospital is shown in the figure below. The mode of selection for birth weight is
The relationship between birth weight and degree of survival $ (log \frac{ π‘ π‘’π‘Ÿπ‘£π‘–π‘£π‘œπ‘Ÿπ‘  }{ π‘›π‘œπ‘›βˆ’π‘ π‘’π‘Ÿπ‘£π‘–π‘£π‘œπ‘Ÿπ‘ })$ in 6908 human births in an obstetric hospital is shown in the figure below. The mode of selection for birth weight is
Identify the correct pairs:
(i) Thermophile            (a) grows optimal at 37 Β°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 Β°C
Transfer of plasmids into animal cells can be achieved by
In an actively growing population from a single bacterium, 1,048,576 cells are present after 20th generation. How many cells were there in 5th generation?
Which of the following is a glycolipid?
In a randomly mating population, the frequency of 'A' allele is 0.7. What is the frequency of An" genotype in the next generation according to Hardy- Weinberg's law? (up to two decimal places)
A random fluctuation in gene frequency is called
Archaeal cell membranes contain lipids that are
The zone of a pond system where respiration is more than production is called as___
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 are producers in an ecological system?
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 bacterial component contains "dipicolinic acid"?
Transpirational pull that extends down to the roots in plants can be interrupted by
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 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
In a honey bee population, the workers are infertile but protect the queen from intruders and help in reproduction. This is an example of
Which of the following is involved in innate immune response in higher mammals?