WBJEE Biological Science Syllabus

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WBJEE 2021 Biological Science Syllabus

Science of Life : Basic unit of life process; Cell Theory; prokaryotic and eukaryotic cells – structure and differences.

Ultra structure and functions of cellular components : Cell wall, plasma membrane, plastids, endoplasmic reticulum, Golgi bodies, mitochondria, ribosomes, lysosomes, nucleus, nucleolus, centrosome, microbodies (peroxisomes and glyoxysomes), cytoskeleton, vacuole, centriole, cilia, flagella

Chemical constituents of living cells :  Classification, components and structural properties of carbohydrates, lipids, proteins and nucleic acids; enzymes, enzymatic action ( lock and key, allosterism, regulation )

Chromosome :  Morphology of chromosomes; brief idea of polytene chromosomes; euchromatin and heterochromatin; nucleic acids as genetic material ( viral transduction and bacterial transformation )

Cell division :  Cell cycle; mitosis- definition and significance ( process not required ); meiosis- process, types and significance; difference between mitosis and meiosis.

Genetics and Evolution : Mendelian inheritance (laws only); deviations from Mendelism : (i) incomplete dominance, (ii) codominance, (iii) multiple alleles and inheritance of blood groups ( ABO, Rh ); phylogenetic inheritance ( elementary ); chromosome theory of inheritance; chromosomes and genes; sex determination in humans, birds and honey bees; linkage and crossing over; sex-linked inheritance- haemophilia, colour blindness; Mendelian disorders in humans- (i) autosomal (a) Thalassemia (b) Down syndrome; (ii) sex-linked (a) Turner’s syndrome (b) Klinefelter’s syndrome ( cause and symptoms only )

Molecular basis of inheritance : DNA as the genetic material ( Griffith, Avery-MacLeod-McCarty and Hershey-Chase experiments ); structure of DNA and RNA; types of RNA- mRNA, rRNA and t-RNA; DNA packaging; central dogma ( elementary ); DNA replication; transcription; genetic code; translation; elementary knowledge of regulation of gene expression ( lac operon ); DNA finger printing ( basic idea only )

Evolution : Origin of life- theories of origin of life; abiogenic origin / chemical origin of life – Oparin – Haldane hypothesis; biological evolution- evidences, theories of organic evolution, Darwin’s contribution, synthetic theory; mechanism of evolution- variation and its sources of origin, mutation, recombination; gene flow and genetic drift; Hardy – Weinberg principle; human evolution- an outline.

Morphological variations and structural organization : Plant tissue and tissue system- types, structure and functions; animal tissue – classification, structure and functions in brief.

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