List of top Biology Questions asked in GRADUATE APTITUDE TEST-BIOTECHNOLOGY

Pox virus replicates in the:

Which one of the following is the most effective strategy in delivering a gene of interest in non-proliferating terminally differentiated cells?

Given below are two statements - one is labelled as Assertion (A) and the other is labelled as Reason (R)
Assertion (A): In the eukaryotic genes, TATA box aids in transcription.
Reason (R): The TATA box facilitates formation of pre-initiation complex for transcription initiation.
In light of the above statements, choose the most appropriate answer from the options given below.

A series of spontaneous point mutations that occur gradually resulting in changes in Influenza virus surface antigens over a time is called

Match the items in List I with the items in List II

The presence of antibody in infected patient's serum can be detected by

Enhanced CO₂ concentration in environment would lead to ________ in plants.

If a single base in the middle of a protein coding open reading frame is replaced with another base, which statement from the following is NOT a likely possibility?

Which of the following statement is NOT correct?

Neoschizomers are the restriction endonucleases with

Foreign DNA can NOT be transferred into a zygote by which one of the following methods?

Given below are two statements:
Statement I: In general, a higher auxin to cytokinin ratio will induce root formation under in vitro culture conditions in plants.
Statement II: NAA is a cytokinin and BAP is an auxin.
In light of the above statements, choose the most appropriate answer from the options given below.

Starting with a single cell, what will be number of cells after 'n' cycles of cell division, given that in each cycle every cell divides into two cells?

Which of the following viruses is a plus-sense single-stranded RNA virus?

In plant mycorrhizal fungi association, what is the most appropriate exchange between two organisms or partners?

Which one of the following statements most appropriately describes the concept of 'Codon Bias'?

Which of the following cell types has the highest surface area to volume ratio?

Complete the following statement with the correct option:
Agrobacterium-mediated plant transformation in the laboratory

In case of prokaryotes, the start codon is usually preceded by a sequence complementary to the

Herpes simplex virus maintains latency in

Given below are two statements – one is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): Human adeno-associated virus is used to deliver single-stranded DNA as a vaccine that does not require multiple booster doses.
Reason (R): Such vaccines are generally administered along with an adenovirus or a herpesvirus to avoid multiple booster doses.
In light of the above statements, choose the most appropriate answer from the options given below:

Francis & Crick proposed the scheme called Central Dogma in 1958. Which of the following processes was NOT covered in this scheme?

Given below are two statement - one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: Bacterial lipopolysaccharide (LPS) on its own does not induce memory B-cell in humans.
Reason R: LPS does not activate T-cell.
In light of the above statements, choose the most appropriate answer from the options given below:

The principle driving force behind movement of water in plants is known as

Bacillus thuringiensis CryA controls certain caterpillar pests by