List of top Questions asked in IIT JAM BT

Which one of the following does NOT belong to the freshwater ecosystem?
Tetracycline binds to the
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?
Which of the following option(s) represent(s) the evolutionary relationship between the bird and bat wings as structures for flying?
The characteristic morphological change(s) in cells undergoing apoptosis is/are
Given data consists of distinct values of $π‘₯_𝑖$ occurring with frequencies $𝑓_𝑖.$ The mean value for the data is _____. (rounded off to one decimal place)
$X_i$56810
$F_i$8101012
Among $K^+, Li^+, Rb^+, Cs^+$, the number of cation(s) having ionic radii more than $Na^+$ is/are _____.
The net number of molecule(s) of NADH formed from one molecule of glucose in glycolysis under aerobic conditions is/are _______.
Given the following sets:
𝐴 = {2, 4, 6, 8, 10, 12}
𝐡 = {8, 10, 12, 14, 16, 18}
𝐢 = {7, 8, 9, 10 11, 12, 13}
(𝐴 ∩ 𝐡) βˆͺ (𝐡 ∩ 𝐢) is
Among the five fragments given below, <br> the number of fragment(s) accelerated to the analyzer tube in mass spectrometer with electron ionization is/are _________.
Among the five fragments given below, <br> the number of fragment(s) accelerated to the analyzer tube in mass spectrometer with electron ionization 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 _____.
The order of differential equation $\frac{𝑑^3𝑦}{dx^3} + 2 \frac{𝑑^2𝑦}{dx^2} βˆ’ 3 \frac{𝑑𝑦}{dx} + 6π‘₯^4𝑦$ = 0 is _______.
Hyperventilation (breathing rapidly and deeply) causes which of the following event(s) in the arterial blood?
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
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
A protein solution of 1 Β΅M has transmission of 40 % at 280 nm, when measured in a 1 cm cuvette using a UV-Visible spectrophotometer. The transmission of the same solution, when measured using a 2 cm cuvette is ______ %. (rounded off to the nearest integer)
The value of $\lim_{π‘₯β†’βˆ’3}\frac{(2π‘₯+6)}{(π‘₯+3)}$ is
Which of the following statement(s) is/are correct about telophase?
Which of the following is/are essential feature(s) of high-fidelity DNA polymerases used in polymerase chain reaction?
Which of the following compound(s) is/are aromatic?
A deck of ten cards is given to you as shown below in the figure. One card is drawn at random from this deck. The probability of selecting a number less than 9 is__ (to one decimal place).
A deck of ten cards
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
A 500 nm light is used for imaging in a confocal microscope. What will be the best resolution (in nm) of this microscope?
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?