List of top Questions asked in GAT-B- 2022

Which of the following is an inactivated vaccine?
Which of the following phagocytic cells is NOT a tissue-specific macrophage cell?
The 'Flavr Savr' tomato was the first genetically engineered crop product commercialized for human consumption. This transgenic tomato is known for:
A plant species nearing its extinction due to virus infection has been given for tissue culture. What should scientists choose from the following four explants for culturing?
Which of the following statements is NOT TRUE about myeloma cells used in the hybridoma technique for the production of monoclonal antibodies?
RNA Viruses are entirely dependent on the host for:
The following statement is NOT true for the receptor binding site of a virus.
RNA virus generally replicates in:
Given below are two statements:
Statement I: BLAST compares protein as well as nucleotide sequences in order to identify areas of similarity.
Statement II: Genbank is a repository of data on the phenotypic results of gene knockouts in humans.
Which of the following hypersensitivity reactions involves the complement activation?
In the human ABO blood group system, the alleles A and B are dominant to O, what will be the number of different possible genotypes?
The stop codons lead to termination of translation because:
In a family, if the father is affected by X-linked dominant trait and mother is normal, then:
Which one the following is a protein prediction server based on artificial intelligence?
Based on this phylogenetic tree, which statement is NOT correct?
Match items in List I with items in List II
List I: A. Silent mutation, B. Missense mutation, C. Nonsense mutation, D. Frameshift mutation
List II: I. Amino acid codon changed to stop codon, II. Sequence beyond mutation changed, III. Sequence changed in one amino acid, IV. Amino acid sequence is unchanged
In which of the following genotypes of lac operon the enzyme synthesis would be constitutive?
A. $I^+ O^+ Z^+ Y^+ / I^+ O^+ Z^+ Y^+$
B. $I^+ O^c Z^+ Y^+ / I^+ O^c Z^+ Y^+$
C. $I^- O^+ Z^+ Y^+ / I^+ O^+ Z^+ Y^+$
D. $I^- O^+ Z^+ Y^+ / I^- O^+ Z^+ Y^+$
Given below are two statements:
Statement I: Sickle cell trait protects humans from malaria.
Statement II: Sickle cell trait can be transmitted even if both the parents are heterozygous for the $\beta$-globin gene.
Given below are two statements:
Statement I: The recombination frequency of genes vary from 50% to 80%.
Statement II: Recombination can occur anywhere along the length of chromosome.
Which of the following mechanisms of antibiotic action is/are NOT correct?
B. Rifampicin: Blocks correct positioning of A-site aminoacyl-tRNA
C. Chloramphenicol: Inhibits EF-Tu function
D. Ciproflaxicin: Inhibits Topoisomerases
E. Puromycin: Causes premature chain termination during translation; mimics 3’ end of aminoacyl‐tRNA in A‐site and acts as acceptor.
Assume height in a plant is controlled by three genes (A, B and C) and each additive allele contributes equally. The base height is 20 cm and maximum possible height is 38 cm. The height of a plant with genotype AAbbCc will be:
Acid Fast bacteria:
Penicillin consists of a thiazolidine ring fused to a $\beta$-lactam ring. This antibiotic inhibits cell wall synthesis by inhibiting:
Match items in List I with items in List II
List I: A. Rickettsia prowazekii, B. Variola major, C. Varicella zoster Virus, D. Borrelia recurrentis
List II: I. Relapsing fever, II. Epidemic typhus, III. Small pox, IV. Shingles
Corona virus is a: