GATE Life Sciences

Suresh said, "I did it yesterday." Which one of the following options is the correct form of this sentence in indirect speech?

To continue the sequence of tiles shown, the tile indicated by the question mark should be

Consider an art gallery whose walkways are shown as lines in the diagram. A black dot represents a junction of two walkways. A guard may be placed at a junction to watch over the w...

The 2nd of June is a Thursday in a certain year. Which day of the week is the 3rd of July in that year?

A coin with heads facing up is shown as H and a coin with tails facing up is shown as T . Six coins are placed in the Starting Arrangement, as shown in the figure below. A "step" i...

Exacerbate : Mitigate :: ________ : ________ Choose the option with the correct pair of words to fill the blank.

A paper shown in Panel I is folded along the dashed lines (---) to construct a cube. The shaded regions shown in Panel I appear on the outer surface of the cube. Referring to cubes...

In a population, patients who have high cholesterol also have high blood-pressure (BP). Some patients with high BP also have diabetes. There are no patients who have both high chol...

Four people P, Q, R, and S, of different ages, make the following observations. P - I am younger than S. Q - I am neither the youngest nor the oldest. R - P is older than me. Based...

Circles C1, C2, and C3, with centers O1, O2, and O3, and radii r1, r2, and r3, respectively, touch each other as shown in the following figure. Given r1 = 2 cm, r2 = 1 cm and the a...

10 mM aqueous HCl is added dropwise to 10 mL of 1 mM aqueous NaOH. The qualitative plot of conductivity (y) against the number of drops of HCl (x) is

Upon hydrolysis of the pentapeptide Glu-Arg-Gly-Phe-Ala (represented from N- to C- terminus) with trypsin, the peptide fragments obtained are

The major product formed in the following reaction is COOH COOH conc. HNO3 30 °C

The CORRECT order of ionic character (in percentage) among the following is

The CORRECT combination(s) of element and their ground state electronic configuration is/are (Atomic Numbers: Ar-18, Sc-21, Cr-24, Mn-25 and Fe-26)

The major component(s) of phosphate buffer at physiological pH of 7.4 is/are

The total number of distinct stereoisomers for the following compound is ____________ (in integer). [Image of chemical structure: H3C-CH(Cl)-CH(Cl)-CH3]

For the reaction A → products, the half-life is independent of the initial concentration of A. The order of the reaction is ____________ (in integer).

Among the following, the number of molecules possessing one or more lone pairs on the central atom is ____________ (in integer). BeCl2 SnCl2 BF3 NH3 SF4 PF5 and SF6

An ideal gas in an insulated container expands against zero external pressure. For this expansion, the CORRECT statement is

The major products P and Q obtained in the following reactions are

The major product formed in the following two-step transformation is (Note: Ts = tosyl and Ac = acetyl) [Diagram of reaction: Reactant 1 (sugar derivative with AcOCH2C, OAc, AcO gr...

Match the coordination complexes given in Column I with their most appropriate properties in Column II. (Given: Atomic number of Mn-25; Co-27; Cu-29): Column I Coordination Complex...

The CORRECT statement(s) about a competitive inhibitor of an enzyme is/are

Among the following, the occupied molecular orbital(s) of carbon monoxide is/are

The option(s) with the CORRECT order of ionisation energy is/are

The pH of 10-8 M HCl (aq.) is ________ (rounded off to two decimal places). Given, pKw = 14.

Which one of the following immunoglobulins is known for its role in both allergy and asthma?

In which kind of organism, the glycerol moiety of lipid is found primarily in the R-configuration?

The Kennedy pathway of cellular phospholipid biosynthesis is associated with _________.

Which of the following options show(s) the correct pairing of a complement protein with its function?

Fluorescence is a result of which one or more of the following?

A 25 amino acid α-helical protein is spanning the thickness of a mammalian cell membrane. Using the average dimensional parameters of a typical α-helix, the thickness of the membra...

The oxidative phase of the hexose monophosphate pathway generates ______ moles of NADPH per mole of glucose 6-phosphate (answer in integer).

Partial double digestion of the DNA shown below with EcoRI, and XhoI will yield ______ bands after gel electrophoresis (answer in integer).

Chymotrypsin cleaves polypeptides preferentially on the carbonyl side of aromatic, and some other bulky nonpolar residues. Trypsin cleaves on the carbonyl side of positively charge...

Which one of the following enzymes is NOT inhibited by glucose-6-phosphate?

The following diagram represents energy states of different protein folding steps, which includes- 1. Folded 2. Transition 3. Molten globule 4. Unfolded Find the correct match of f...

The correct path of transfer of electrons in the light harvesting photosystems in vascular plants is _________.

For a simple enzyme that follows Michaelis-Menten kinetics, kinetic data was collected in the absence (dotted line, -I), or presence (solid line, +I) of an uncompetitive inhibitor...

Which statement(s) is/are true about the 5'-capping of eukaryotic mRNA?

Which of the following statements about pertussis toxin is/are NOT true?

Telomerase has which one or more of the following activities?

To a 10 × 10⁻⁹ M solution of a receptor, its specific ligand was added, and incubated. At equilibrium, the concentration of the free ligand was 5 × 10⁻⁹ M, and the concentration of...

Assuming that there are 5 × 10¹³ cells in the human body, and that ATP is turning over at a rate of 10⁹ ATP molecules per minute in each cell, then the human body is utilizing ____...

A solution shows a transmittance of 20% when taken in a cuvette of 2.5 cm path length. If the molar absorption coefficient of the solution is 12000 dm³/mol.cm, the concentration of...

Which one of the following plant families is characterized by the gynobasic style of female reproductive organ?

Which one of the following plant organs typically exhibits all the four features listed below? (i) Starch-enriched endodermis (ii) Conjoint, collateral and open vascular bundle (ii...

Correctly match the following molecules/methods in Group-I with their major uses in Group-II. Group-I (P) CRISPR-Cas9 (Q) DNA Microarray (R) Vir genes (S) RAPD Group-II (1) Global...

Which one of the following commercial products is used as a systemic fungicide to control plant diseases?

Which one of the following terms best describes the plants that are adapted to grow in acidic soil?

Which of the following plant genera is/are example(s) of partial stem parasite?

Which of the following amino acids contain(s) only one chiral center?

If an endosperm cell of a typical diploid angiosperm species has 15 chromosomes, then the number of chromosomes in a microspore mother cell of this species under normal circumstanc...

Which one of the following class(es) of genes, when deleted, would result in sepal formation in all the floral whorls of Arabidopsis, as per the rules of the typical ABC model of f...

Correctly match the following molecular assemblies in Group-I with their functions in Group-II. Group-I (P) Photosystem I (Q) Photosystem II (R) Cytochrome b6f complex (S) CF0-CF1...

Correctly match the following secondary metabolites in Group-I with their chemical classes in Group-II. Group-I (P) Codeine (Q) Podophyllotoxin (R) Resveratrol (S) Linamarin (T) Li...

Correctly match the following plant diseases in Group-I with their causal organisms in Group-II. Group-I (P) Red rot of sugarcane (Q) Tikka disease of groundnut (R) Late blight of...

Correctly match the following plant species in Group-I with their main economically important products in Group-II. Group-I (P) Gossypium arboreum (Q) Dalbergia sissoo (R) Hevea br...

Two genes X and Y are involved in root development in such a way that all the following three homozygous mutants show rootless phenotype. (i) Gain-of-function mutant of X (ii) Loss...

Which of the following combinations of photosynthetic carbon cycle in plants, and its matched biochemical reaction is/are correct?

Choose the correct combination(s) of alkaloid, source plant, and their main commercial use.

Which of the following statements is/are correct about plant movement?

Two completely linked genes A and B regulate plant height and flower colour, respectively, wherein the recessive mutant aa is dwarf bearing red flowers and the recessive mutant bb...

An enzyme following Michaelis-Menten kinetics, catalyses a reaction with an initial velocity (V₀) of 2 µM s⁻¹ at the substrate concentration of 10 µM. If the turnover number (kcat)...

Which one of the following statements about microbiological stains is CORRECT?

The genome of which one of the following viruses encodes reverse transcriptase?

Protoplasts can be generated from

Which one of the following molecules is the master regulator of the planktonic-surface transition in Pseudomonas aeruginosa during biofilm formation?

Which one of the following is a protozoal disease?

Which one of the following drugs is a viral protease inhibitor?

In Escherichia coli, the minimum number of crossovers required between F- genome and the linear DNA transmitted by Hfr to form a viable recombinant is ________. (Answer in integer)

The decimal reduction time of Escherichia coli at a particular temperature is one minute. Assuming no bacterial growth and constant death rate, the time required for one million ba...

Which one of the following options correctly matches the microbial names in Column I with their corresponding sources of epithet in Column II? Column I (P) Klebsiella pneumoniae (Q...

Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]. Assertion [a]: Silver and copper display bacteriocidal or antiseptic activity. Reason [r]:...

When tryptophan level is low in Escherichia coli, the expression of tryptophan biosynthesis genes is turned on through an antiterminator stem-loop formation between

The effect of mutations in a gene at their transcriptional and translational levels were analyzed using Northern (N) and Western (W) blot techniques, respectively. The following fi...

Which one of the following leukocytes is the most abundant in a healthy human?

DNA amplification in the polymerase chain reaction is

In bacteriophage lambda (λ) life cycle, binding of Cro protein to cI gene operator region