List of top Questions asked in IIT JAM BT

Match the type of DNA repair mechanism in Group I with the enzyme(s) involved in Group II
Group I Group II
P) Mismatch repair1) DNA glycosylase
Q) Base excision repair2) UvrA, UvrB, UvrC and UvrD
R) Nucleotide excision repair3) RecA
S) Double strand break repair4) MutL, MutS and MutH
Tetracycline binds to the
In the β€˜Southern blot’ technique, which of the following reagents is used to detect the presence of a desired DNA fragment?
The pedigree given below shows individuals affected (shaded circles/rectangles) by chronic hypertension. Assuming 100% penetrance, the inheritance of this trait is
The pedigree given below shows individuals affected (shaded circles/rectangles) by chronic hypertension. Assuming 100% penetrance, the inheritance of this trait is
Which one of the following statements about photoproteins in plants is INCORRECT?
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 is correct in the case of conjugation of a high frequency recombination (Hfr) strain with F- strain of E. coli?
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].
Assertion [a]: The cardiovascular organization called double circulation provides vigorous flow of blood to the brain, muscles, and other organs.
Reason [r]: The blood is pumped a second time after it loses pressure in the capillary beds of the lungs or skin.
A genetic linkage map represents the
Class II MHC molecules are NOT expressed by
Which one of the following enzymes is required to ensure the replication of a negative-sense or negative-strand RNA virus?
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
Match the recombinant DNA products in Group I with its application in Group II
Group I Group II
P) Tissue plasminogen activator1) Emergency treatment of heart attack
Q) Erythropoietin 2) Treatment of anemia
R) Superoxide dismutase 3) Prevents tissue damage
S) Interferon4) Stimulates cells to inhibit viral replication
Which of the following statement(s) is/are correct about telophase?
The characteristic morphological change(s) in cells undergoing apoptosis is/are
A species of fish living in a lake are separated by drying up of the lake into two separate lakes. After several hundreds of years of separation, the two groups are unable to mate. These groups are now considered to be different _____.
Which of the following compound(s) is/are aromatic?
Which of the following is/are essential feature(s) of high-fidelity DNA polymerases used in polymerase chain reaction?
Which of the following option(s) represent(s) the evolutionary relationship between the bird and bat wings as structures for flying?
Different segments of a photosynthetic filamentous alga are exposed to different wavelengths of light as shown below. After a period of time, bacteria known to migrate towards high oxygen concentration, is spread on the surface of the alga. Which region(s) of the alga will have maximum bacterial congregation?
After a period of time, bacteria known to migrate towards high oxygen concentration, is spread on the surface of the alga. Which region(s) of the alga will have maximum bacterial congregation?
Hyperventilation (breathing rapidly and deeply) causes which of the following event(s) in the arterial blood?
Which of the given statement(s) about synthetic oligonucleotides is/are correct?
The net number of molecule(s) of NADH formed from one molecule of glucose in glycolysis under aerobic conditions is/are _______.
The number of possible unique combination(s) of linear tetrapeptides that can be made from four different amino acids using each amino acid only once in the chain is/are _____.
Among $K^+, Li^+, Rb^+, Cs^+$, the number of cation(s) having ionic radii more than $Na^+$ is/are _____.