List of top Questions asked in GATE Life Sciences

A 10 kg tomato pulp is concentrated from an initial moisture content of 90% (wet weight basis) to 35% (wet weight basis). The weight of the concentrate in kg is_____(round off to 2 decimal places).
Which one of the following metabolic intermediates is common to glycolysis, nucleotide synthesis and glycogen synthesis?
Which one or more of the following statements is/are correct regarding the transport and retention of proteins in different cell organelles?
The human genetic code is triplet in nature with 64 codons made using four nucleotides. If the human genetic code was doublet in nature, the number of codons theoretically possible from four nucleotides is_____ (Answer in integer)
Which one of the following use inorganic compounds as an energy source?
The CORRECT option(s) of Y for the following reaction is/are
The CORRECT option(s) of Y for the following reaction is/are
Each of the following alkenes undergoes addition reaction with bromine. Under the reaction conditions, the CORRECT trend in the reaction rates is
The pKa of a buffer solution with pH of 5, consisting of 0.4 M sodium acetate and 0.04 M acetic acid, is____(Answer in integer)
Consider the following nucleotide sequence: 5'-GCCGCCAUGGCGUCUGCUAGCUGGCUCGAUCGCGAGCGAUCGUAC GUAUAGUAUGAA-3' Assume canonical initiation, canonical termination, no post-translational modification, and the average molecular mass of an amino acid to be 110 daltons. The theoretical molecular mass of the polypeptide translated from the above nucleotide sequence is _____ daltons. (Answer in integer)
Match the metabolic intermediates listed in Column I with their corresponding amino acids given in Column II.
Column IColumn II 
P. a-Ketoglutarate i. Histidine 
Q.Ribose 5-phosphate ii. Glutamate
R. 3-Phosphoglycerate iii.Aspartate
S. Phosphoenolpyruvateiv. Phenylalanine
 v.Serine
The molecule(s) with non-zero dipole moment is/are
The molecules A and B are a pair of___
The molecules A and B are a pair of
Upon addition of compound X to an aqueous AgNO\(_3\) solution, a white precipitate appears instantly. Also, X does not exhibit geometrical isomerism. The CORRECT option(s) for X is/are:
At t = 0, the bacterial cell number is 10,000 cells/mL. At t = 480 minutes, the cell number increased to 320,000 cells/mL. The mean generation time during this exponential growth period, rounded off to the nearest integer is___ minutes.
Which of the following plant natural products is/are cyanogenic glycoside(s)?
Which of the following plant natural products is/are cyanogenic glycoside(s)?
The CORRECT order of acidity of the following compounds is
The CORRECT order of acidity of the following compounds is
Which of the following statements is/are true?
Which of the following is/are typical characteristic(s) of a fungal cell?
Which of the following steps in food processing is/are used to reduce the acrylamide formation in food products?
Which of the following enzymes is/are used for the production of high fructose syrup (HFS) from corn starch?
Which of the following statements is/ are correct regarding food and water borne disease and the class of causative microorganisms?
The product of cabbage fermentation by Leuconostoc mesenteroides is
Match the anti-nutritional factor in Column I with their corresponding activity given in Column II.
Column IColumn II
(P) Lectin 1 Total amount of produced by autotrophs energy
(Q) Stachyose  2Chelates with divalent cations and reduces their bio-availability 
(R) Phytate 3Inhibits trypsin and chymotrypsin 
(S) Knuitz type inhibitor 4Hemagglutination 
The addition of which of the following to high-methoxyl pectin will result in gel formation?