List of top Questions asked in IIT JAM BL- 2018

Bacterial superantigens
When grown in the presence of glucose and lactose together, E. coli does not utilize lactose first because
For accurate determination of evolutionary relationship within elephants, an approach of choice would be to compare
Which of the following combinations of the statements about photorespiration is CORRECT? (P) Photorespiration generates no ATP
(Q) Photorespiration produces no glucose
(R) Photorespiration releases O\(_2\)
(S) Photorespiration does not occur in C\(_4\) plants
Which of the following statements are TRUE for hexokinase and glucokinase?
Which of the following statements about mature tRNA and/or mRNA are FALSE?
Which of the following statements are CORRECT about meiosis?
Phospho-mimic mutants of proteins can be generated by replacing
Which of the following techniques can be used to detect protein-protein interactions in-vivo?
(P) Two hybrid assay
(Q) Fluorescence resonance energy transfer
(R) Fluorescence recovery after photobleaching
(S) Gel-shift assay
The predominant mechanism of microRNA mediated regulation of gene expression is inhibition of:
In human reproduction, (P) spermatogenesis starts at puberty
(Q) oogenesis starts at fetal stage
(R) following meiosis, one oogonium produces 4 eggs
(S) following meiosis, one spermatogonium produces 4 sperms
3'-Azido-2',3'-dideoxy thymidine (AZT) with the structure shown above has potential to work as a drug against HIV because:
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A bacterium that arose 3.5 billion years ago divides once every 12 hours. Under ideal conditions, the number of generations the bacterium has undergone will be approximately:
During synthesis of N-linked glycosylated proteins in mammalian cells, which one of the following compositions of sugars is originally added as a core through dolichol-phosphate precursor?
A dihybrid phenotypic ratio of 15:1 was obtained while making a cross of AaBb × AaBb. This is an example of:
On infection by a specific virus, a host generates cytotoxic T cells that kill:
Which one of the following combinations showing the chromosome numbers for human cells is CORRECT?
The function \( y = 1 \) is an equation of a:
Bottle X contains 1 L of water, while bottle Y, which has the same capacity as X, is empty. Water is poured from bottle X to Y. The plot of the quantity of water in Y as a function of the quantity of water in X is:
The derivative of \( 2^x \) with respect to \( x \) is:
An example of transcytosis is:
In mammals, which one of the following vitamins is required in amino group transfer reaction?
'Philadelphia chromosome' is NOT linked to
Decreasing the concentration of sodium ions from double stranded DNA solution results in decrease in Tm. This happens because of increased
During pre-mRNA splicing reaction, a lariat RNA is formed when the intron cleaved at the 5' splice site gets linked by a