Biotechnology - 2016 Past Year Paper - IIT JAM MCQ

The circulatory levels of estrogen is derived mainly from

Radial symmetry is the characteristic feature of which of the following phyla?

In ecotone, some species become abundant and they are called

From the set of 10 numbers {1, 2,...,10} three numbers are selected at random without replacement. The probability that the sum of these selected numbers is 9,  is                                                                              

Consider two nuclei with the same mass number A. For which of the following values of A, the fusion reaction is NOT possible?

The time period and the amplitude of an object executing simple harmonic motion, under the restoring force of a spring, are 3.14 seconds and 0.2 m, respectively. If the mass of the object is 2 kg, the maximum force (in Newton) exerted by the spring on the object is

The migratory aptitude of (alkyl or aryl) substituents in Baeyer-Villiger oxidation is

Match the entries in Group I with the entries in Group II

Determine the correctness or otherwise of the following Assertion [a] and Reason [r].
Assertion: In the process of ATP synthesis in oxidative phosphorylation, ATP synthase is not a part of electron transport chain on inner mitochondrial membrane.
Reason: ATP synthase is coupled to electron transport chain through proton motive force.

Higher levels of glycosylated hemoglobin (HbA1c) indicate

Match the entries in Group I with the entries in Group II

Match the entries in Group I with the entries in Group II

In an experiment conducted in the dark, isolated chloroplasts are kept in buffer (pH 4.0) at 4 °C until their internal pH is equal to 4.0. Then, they are transferred to a buffer of pH 8.0, and ADP and Pi are added at the same time. Which of the following will happen?

Two mammalian cell lines with doubling times of 12 h and 36 h were cultured with radioactive thymidine for 8 h. The cells were further cultured without the radioactive thymidine for 72 h. Incorporated radioactivity was measured in equal number of cells in each culture, which revealed that

Match the entries in Group I with the entries in Group II

 A line L parallel to the vector iˆ + ˆj + kˆ passes through the point (1,2,4) and meets the xy-plane at a point P. The distance between the origin and P is

Let P(t) denote the population of a species at time t. If P(t) is given by the equation

and if the initial population P(0) = 0.1 million, then the population at t = 1 is 

Let Z be the set of all integers and f and g are one-one mappings from Z into itself.

In a p-n junction, the depletion region has a width of 3 × 10⁻⁷ m and the intensity of electric field in the depletion region is 10⁶ V/m. An electron approaches the junction from the n-side with velocity v₁ and enters the p-side with velocity v₂. If v₂ = 4 × 10⁵ m/s, the value of v₁ is   Given data: Charge of electron = 1.6 × 10⁻¹⁹ C; Mass of electron = 9.1 × 10⁻³¹ kg

An alpha particle and a proton have the same de Broglie wavelength. Which of the following is also the same for the two particles if they are moving at non-relativistic speeds?  

An electron is accelerated from rest through a potential difference of 400 V. The electron then enters a uniform magnetic field that is perpendicular to the direction of electrons. The radius of the circular path experienced by the electron is 10 cm. The angular speed of electrons, in radians/sec, is  Given data: Charge of electron = 1.6 × 10⁻¹⁹ C; Mass of electron = 9.1 × 10⁻³¹ Kg

Consider two vectors P and Q of equal magnitude. If the magnitude of P + Q is two-times larger than that of P − Q, then the angle between them is  

Match the equations in the left column with their names in the right column

The major product in the following reaction is 

Of the given isomers of molecules Ι and ΙΙ, the meso-form is

CH₃CH(Br)CH(Cl)CH₃

CH₃CH(Cl)CH(Cl)CH₃

Considering the periodic trends of elements, which of the following is NOT correct?

Which one is the major product of the following reaction?