List of top Questions asked in GATE BT

Which one of the following tools is used to compare all the possible six-open reading frames of a given nucleotide query sequence with all the available six-open reading frames of the nucleotide sequence database?

In Neurospora crassa, a mutation in the poky gene results in slow growth (poky). The results of four crosses are given:
(1) wild-type ♀ × wild-type ♂ → All progeny wild-type
(2) wild-type ♀ × poky ♂ → All progeny wild-type
(3) poky ♀ × wild-type ♂ → All progeny poky
(4) poky ♀ × poky ♂ → All progeny poky
Which one of the following explains the inheritance mode of poky?

The sum of the infinite geometric series \( 1 + \frac{1}{3} + \frac{1}{3^2} + \frac{1}{3^3} + \ldots \) (rounded off to one decimal place) is \(\underline{\hspace{1cm}}\).

Three balls colored blue, green and red are transferred from box A to box B in the order BLUE–GREEN–RED. The probability that they are transferred back from box B to box A in the same order (rounded off to two decimal places) is \(\underline{\hspace{1cm}}\).

Decimal reduction time of a bacterial strain is 20 min. Specific death rate constant in min\(^{-1}\) (rounded off to two decimal places) is \(\underline{\hspace{1cm}}\).

Two reactors of volumes 5 L and 10 L contain an ideal gas at 9 atm and 6 atm. When the valve is opened, the final equilibrium pressure (atm) of the system is \(\underline{\hspace{1cm}}\).

For enzyme \(\alpha\)-amylase with \(K_m = 0.005\,M\), the substrate concentration for one-fourth of \(V_{\max}\) (rounded to two decimals, mM) is \(\underline{\hspace{1cm}}\).

A protein without its prosthetic group is known as:

The enzyme which adds phosphate group to the free 5' terminus of a DNA sequence is

Which one of the following is CORRECT about microbial growth medium?

The cellular process which utilizes RNA-induced silencing complex to block gene expression is

Which of the following layer(s) is/are formed from the inner cell mass of the blastocyst?

Which of the following cell organelle(s) is/are surrounded by a single phospholipid membrane?

\(\frac{d}{dx}[\ln(2x)]\) is equal to

Which one of the following techniques/tools is NOT used for inserting a foreign gene into a cell?

Under standard temperature (T) and pressure (P) conditions, 128 g of an ideal gas molecule A occupies a volume of 1 L. The gas molecule A obeys the relationship $RT = 0.25PV$. R and V are universal gas constant and ideal gas volume, respectively. The molecule A is:

CRISPR-Cas system is associated with:

The process by which intracellular macromolecules are supplied for lysosomal degradation during nutrient starvation is:

The enzyme that transcribes the eukaryotic genes encoding precursor ribosomal RNAs (pre-rRNAs) of 28S, 18S and 5.8S rRNAs is

Number of unrooted trees in a phylogeny of five sequences is

Which one of the following methods is used to test the significance of a predicted phylogeny?

The Cartesian coordinates $(x,y)$ of a point $A$ with polar coordinates $(4,\pi/4)$ is

Which one of the following statements is INCORRECT about hybridoma production?

Coronavirus genome consists of