List of top Life Science Questions asked in GATE Life Sciences

Which of the following molecular approaches can be used to generate complete knock-out of a target gene in plants?
Which of the following is/are heteropolysaccharide(s)?
Förster Resonance Energy Transfer does NOT depend on the
Which of the following is/are peptide hormone(s)?
Peptide-binding cleft in MHC-I is formed by
The equilibrium dissociation constant of acetic acid is \( 1.74 \times 10^{-5} \) M. The \( pK_a \) of acetic acid (rounded off to one decimal place) is ......
Which of the following peptides do/does NOT absorb ultraviolet light above 250 nm wavelength?
Which one of the following restriction endonucleases is a blunt cutter?
Which of the following statements about antibodies is/are correct?
Which one of the following molecules does NOT contain phosphoanhydride bond(s)?
Which one of the following is the most sensitive immunoassay?
Which one of the following molecules captures \(CO_2\) in the \(CO_4\) cycle?
Which one of the following methods separates biomolecules based on their hydrodynamic volumes?
The average moisture binding energy of a textured protein product (TPP) at 8% moisture content (dry basis) is 3200 cal·mol$^{-1}$. If the water activity of the TPP at the above moisture content is 0.30 at $30^{\circ}$C, the water activity of the sample at $45^{\circ}$C is ................ (rounded off to 2 decimal places). Gas constant $R=1.987$ cal·mol$^{-1}$·K$^{-1}$.
Radiation dose required for 8 log reductions:
D₁₀ range = 0.75–1.80 kGy → Dose = 8 × D₁₀ = 6.00–14.40 kGy.
Answer: 6.00 to 14.40 kGy

Match the process in Column I with the related food component in Column II. 

Match the peeling technique in Column I with the vegetable, for which it is used in industry, given in Column II.

Match the method/value used for measuring lipid characteristics in Column I with the corresponding properties indicated by them, in Column II. 

Extrusion cooking is accomplished in four different stages, which are indicated as I, II, III and IV in the figure given below. Choose the correct option representing the name of each stage. 

Match the standard/stated cofactors in Column I with their respective enzymes in Column II 

Match the immunological statements in Column I with the appropriate descriptions from Column II. 

Match the syndromes listed in Column I with the cause/symptoms listed in Column II. 

Match the hormones/precursors listed in Column I with their chemical type in Column II and the tissue of origin listed in Column III.

During the exponential growth, it took 6 hours for the population of bacterial cells to increase from \(2.5 \times 10^6\) to \(5 \times 10^{8}\). The generation time of the bacterium, rounded off to the nearest integer, is _______ minutes.
A suspension of photosynthetic green algae was illuminated in the presence of \(^{14}\)CO\(_2\) for few seconds. The first metabolite in the Calvin cycle to be radiolabeled will be 3-phosphoglycerate (3-PGA).