GATE Syllabus - Life Sciences
I . CHEMISTRY
(Compulsory)
Atomic structure and periodicity: Quantum
chemistry; Planck’s quantum theory, wave particle duality, uncertainty
principle, quantum mechanical model of hydrogen atom; electronic
configuration of atoms; periodic table and periodic properties; ionization
energy, election affinity, electronegativity, atomic size.
Structure and bonding:
Ionic and covalent bonding M.O. and V.B. approaches for diatomic
molecules, VSEPR theory and shape of molecules, hybridisation, resonance,
dipole moment, structure parameters such as bond length, bond angle and
bond energy, hydrogen bonding, van der Waals interactions. Ionic solids;
ionic radii, lattice energy (Born-Haber Cycle).
s.p. and d Block
Elements: Oxides, halides and hydrides of alkali and alkaline earth
metals, B, Al, S, N, P and S, silicones, general characteristics of 3d
elements, coordination complexes: valence bond and crystal field theory,
color, geometry and magnetic properties.
Chemical Equilibria:
Colligative properties of solutions, ionic equilibria in solution,
solubility product, common ion effect, hydrolysis of salts, pH, buffer and
their applications in chemical analysis.
Electrochemistry:
Conductance, Kohlrausch law, Half Cell potentials, emf, Nernst equation,
galvanic cells, thermodynamic aspects and their applications.
Reaction Kinetics: Rate
constant, order of reaction, molecularity, activation energy, zero, first
and second order kinetics, equilibrium constants (Kc,
Kp and Kx) for homogeneous reactions, catalysis and
elementary enzyme reactions.
Thermodynamics: First
law, reversible and irreversible processes, internal energy, enthalpy,
Kirchoff’s equation, heat of reaction, Hess law, heat of formation, Second
law, entropy, free energy, and work function. Gibb-Helmholtz equation,
Clausius-Clapeyron equation, free energy change and equilibrium constant,
Troutons rule, Third law of thermodynamics.
Mechanistic Basis of Organic
Reactions: Elementary treatment of SN1, SN2, E1 and E2 reactions,
Hoffmann and Saytzeff rules, Addition reactions, Markonikoff rule and
Kharash effect, Diels-Alder reaction, aromatic electrophilic substitution,
orientation effect as exemplified by various functional groups.
Structure-Reactivity
Correlations: Acids and bases, electronic and steric effects, optical
and geometrical isomerism, tautomerism, con
J.
BIOCHEMISTRY
Organization of life. Importance of
water. Cell structure and organelles. Structure and function of
biomolecules: Carbohydrates, Lipids, Proteins and Nucleic acids.
Biochemical separation techniques. Spectroscopic methods; UV-visible and
fluorescence. Protein structure, folding and function: Myoglobin,
Hemoglobin, Lysozyme, ribonuclease A, Carboxypeptidase and Chymotrypsin.
Enzyme kinetics and regulation, Coenzymes.
Metabolism and bioenergitics.
Generation and utilization of ATP. Photosynthesis. Major metabolic
pathways and their regulation. Biological membranes. Transport across
membranes. Signal transduction; hormones and neurotransmitters.
DNA
replication, transcription and translation. Biochemical regulation of gene
expression. Recombinant DNA technology and applications. Genomics
and Proteomics.
The
immune system. Active and passive immunity. Complement system. Antobody
structure, function and diversity. Cells of the immune system: T, B and
macrophages. T and B cell activation. Major histocompatibilty complex. T
cell receptor. Immunological techniques: Immunodiffusion,
immunoelectrophoresis, RIA and ELISA.
K.
BIOTECHNOLOGY
Recombinant DNA technology for the
production of therapeutic proteins.Micro array
technology. Heterologous protein expression systems in
bacteria, yeast etc.
Architecture of plant genome;
plant tissue culture techniques; methods of gene transfer into plant
cells; manipulation of phenotypic traits in plants; plant cell
fermentations and production of secondary metabolites using suspension/
immobilized cell culture; methods for plant micro propagation; crop
improvement and development of transgenic plants. Expression of animal
proteins in plants.
Animal cell metabolism and regulation; cell cycle; primary cell
culture; nutritional requirements for animal cell culture; techniques for
the mass culture of animal cell lines; production of vaccines; growth
hormones and interferons using animal cell culture; cytokines- production
and therapeutic uses; hybridoma technology; vectors for gene transfer and
expression in animal cells. Transgenic animals and molecular
pharming.
Microbial production of industrial enzymes; methods for
immobilization of enzymes; kinetics of soluble and immobilized enzymes;
application of soluble and immobilized enzymes; enzyme-based
sensors.
Microbial growth kinetics;
batch, fed batch and continuous culture of microbial cells; media for
industrial fermentations; sterilization of air and media; design features
and operation of stirred tank, air-lift and fluidized bed reactors;
aeration and agitation in aerobic fermentations; recovery and purification
of fermentation products- filtration, centrifugation, cell disintegration,
solvent extraction and chromatographic separations; industrial
fermentations for the production of ethanol, citric acid, lysine,
penicillin and other biomolecules; simple calculations based on material
and energy balance of fermentation processes; application of microbes in
the management of domestic and industrial wastes.
L.
BOTANY
Anatomy: Roots, stem and leaves of land
plants, meristems, vascular system, their ontogeny, structure and
functions.
Plant cell structure,
organisation, organelles, cytoskeleton, cell wall and
membranes.
Development: Cell cycle,
cell division, senescence, hormonal regulation of growth; life cycle of an
angiosperm, pollination, fertilization, embryogenesis, seed formation,
seed storage proteins, seed dormancy and germination.
Concept of cellular totipotency, organogenesis and somatic
embryogenesis, somaclonal variation, embryo culture, in vitro
fertilization.
Physiology and
Biochemistry: Plant water relations, transport of minerals and
solutes, N2 metabolism, proteins and nucleic acid, respiration,
photophysiology, photosynthesis, photorespiration; biosynthesis, mechanism
of action and physiological effects of plant growth regulators.
Genetics: Principles of
Mendelian inheritance, linkage, recombination and genetic mapping;
extrachromosomal inheritance; eukaryotic genome organization (chromatin
structure) and regulation of gene expression, gene mutation, chromosome
aberrations (numerical and structural), transposons.
Plant Breeding:
Principles, methods - selection, hybridization, heterosis; male sterility,
self and inter-specific incompatibility; haploidy; somatic cell
hybridization; molecular marker-assisted selection; gene transfer methods
viz. direct and vector-mediated, transgenic plants and their applications
in agriculture.
Economic Botany:
Economically important plants - cereals, pulses, plants yielding fiber,
timber, sugar, beverages, oils, rubber, dyes, gums, drugs and narcotics –
a general account.
Systematics: Systems of
classification (non-phylogenetic vs. phylogenetic – outline), plant
groups, molecular systematics.
Plant Pathology: Nature
and classification of plant diseases, diseases of important crops caused
by fungi, bacteria and viruses, and their control measures, mechanism(s)
of pathogenesis and resistance, molecular detection of pathogens;
plant-microbe beneficial interactions.
Ecology and Plant
Geography: Ecosystems – types, dynamics, degradation, ecological
succession; food chains; vegetation types of the world; pollution and
global warming; speciation and extinction, conservation strategies,
cryopreservation.
M. MICROBIOLOGY
Historical
perspective - Discovery of the microbial world; Controversy over
spontaneous generation; Role of microorganisms in transformation of
organic matter and in the causation of diseases.
Methods in
microbiology - Pure culture techniques; Theory and
practice of sterilization; Principles of microbial nutrition; Construction
of culture media; Enrichment culture techniques for isolation of
chemoautotrophs, chemoheterotrophs and photosynthetic
microorganisms.
Microbial evolution,
systematics and taxonomy - Evolution of earth and earliest life forms;
Primitive organisms and their metabolic strategies; New approaches to
bacterial taxonomic classification including ribotyping;
Nomenclature.
Microbial
diversity -
Bacteria, archea and their broad classification; Eukaryotic microbes,
yeast, fungi, slime mold and protozoa; Viruses and their
classification.
Microbial growth
- The definition of growth, mathematical expression of growth, growth
curve, measurement of growth and growth yields; Synchronous growth;
Continuous culture.
Nutrition and metabolism
- Overview of metabolism; Microbial nutrition; Energy classes of
microorganisms; Culture media; Energetics, modes of ATP generation; ATP
generation by heterotrophs; Fermentation; Glycolysis; Respiration; The
citric acid cycle; Electron transport systems; Alternate modes of energy
generation; Pathways (anabolism) in the biosynthesis of amino acids,
purines, pyrimidines and fatty acids.
Metabolic diversity among
microorganisms - Photosynthesis in microorganisms; Role of
chlorophylls, carotenoids and phycobilins; Calvin cycle; Chemolithotrophy;
Hydrogen- iron- nitrite-oxidizing bacteria; Nitrate and sulfate reduction;
Methanogenesis and acetogenesis.
Prokaryotic cells:
structure-function - Cells walls of eubacteria (peptidoglycan) and
related molecules; Outer-membrane of gram-negative bacteria; Cell wall and
cell membrane synthesis; Flagella and motility; Cell inclusions like
endospores, gas vesicles.
Microbial diseases
and host parasite relationships - Normal microflora of skin; Oral
cavity; Gastrointestinal tract; Entry of pathogens into the host;
Infectious disease transmission; Respiratory infections caused by bacteria
and viruses; Tuberculosis; Sexually transmitted diseases including AIDS;
Diseases transmitted by animals (Rabies, plague), insects and ticks
(rikettsias, Lyme disease, malaria); Food and water borne diseases; Public
health and water quality; Pahtogenic fungi; Emerging and resurgent
infectious diseases.
Chemotherapy/Antibiotics
- Antimicrobial agents; Sulfa drugs; Antibiotics; Pencillins and
cephalosporins; Broad-spectrum antibiotics; Antibiotics from prokaryotes;
Antifungal antibiotics; Mode of action; Resistance to
antibiotics.
Microbial genetics
- Genes, mutation and mutagenesis – UV and chemical mutagnes; Types of
mutations; Ames test for mutagenesis; Methods of genetic analysis.
Bacterial genetic system – Transformation; Conjugation; Transduction;
Recombination; Plasmids and Transposons; Bacterial genetic map with
reference to >E. coli. Viruses and their genetic system – Phage and its
life cycle; RNA phages; RNA viruses; Retroviruses; Genetic systems of
yeast and Neurospora; Extrachromosomal inheritance and mitochondrial
genetics; Basic concept of genomics.
N.
ZOOLOGY
Animal world: Animal diversity,
distribution, systematic and classification of animals, the phylogenetic
relationship.
Evolution: Origin
of life, history of life on earth, evolutionary theories, natural
selection, adaptation, speciation.
Genetics:
Principles of inheritance, molecular basis of heredity, the genetic
material, transmission of genetic material, mutations, cytoplasmic
inheritance.
Biochemistry and Molecular
Biology: Nucleic acids, proteins and other biological
macromolecules. Replication, transcription and translation,
regulation of gene expression, organization of genome, Kreb's cycle,
glycolysis, enzyme catalysis, hormones and their action.
Cell Biology:
Structure of cell, cellular organelles and their structure and
function, cell cycle, cell division, cellular differentiation, chromosome
and chromatin structure. Eukaryotic gene organisation and
expression.
Animal Anatomy and
Physiology: Comparative physiology, the respiratory system,
circulatory system, digestive system, the nervous system, the excretory
system, the endocrine system, the reproductive system, the skeletal
system, osmoregulation.
Parasitology and Immunology:
Nature of parasite, host-parasite relation, protozoan and helminthic
parasites, the immune response, cellular and humoral immune response,
evolution of the immune system.
Development Biology:
Embryonic development, cellular differentiation, organogenesis,
metamorphosis, genetic basis of development.
Ecology: The
ecosystem, habitats the food chain, population dynamics, species
diversity, zoogeography, biogeochemical cycles, conservation
biology.
Animal
Behaviour: Types of behaviours, courtship, mating and
territoriality, instinct, learning and memory, social behaviour across the
animal taxa, communication, pheromones, evolution of animal
behaviour.
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