Short Answer TypeState the ‘Central dogma’ as proposed by Francis Crick. Are there any exceptions to it? Support your answer with a reason and an example.
Explain how the biochemical characterisation (nature) of ‘Transoforming Principle’ was determined. which was not defined from Griffith’s experiments.
Multiple Choice QuestionsWhich of the following is required as inducer(s0 for the expression of lac operon?
galactose
lactose
lactose and galactose
lactose and galactose
The two polypeptides of human insulin are linked together by
phosphodiester bonds
covalent bonds
disulphide bridges
disulphide bridges
Which one of the following is not applicable to RNA?
Complementary base pairing
5, phosphoryl and 3' hydroxyl ends
Heterocyclic nitrogenous bases
Heterocyclic nitrogenous bases
D.
Heterocyclic nitrogenous bases
Chargaff's Rule is not applicable to RNA. He is the generalisations formulated about DNA structure. The rule states that DNA from any cell of all organisms should have a 1:1 ratio (base pair rule) of pyrimidine and purine bases, i.e. the amount of guanine is equal to cytosine and the amount of adenine is equal to thymine. Further complementary base pairing is sometimes, visible is RNA as well (in doubled stranded RNAs of viruses) hence option (a) is not taken into consideration.
Identify the correct order of organisation of genetic material from largest to smallest
Chromosome, gene, genome, nucleotide
Genome, chromosome, nucleotide, gene
Genome, chromosome, gene, nucleotide
Genome, chromosome, gene, nucleotide
Balbiani rings rigs are sites of
Lipid synthesis
Nucleotide synthesis
Polysaccharide synthesis
Polysaccharide synthesis
Satellite DNA is important because it
codes for proteins needed in cell cycle.
shows high degree of polymorphism in population and also the same degree of polymorphism in an individual, which is heritable from parents to children.
does not code for proteins and is same in all members of the population.
does not code for proteins and is same in all members of the population.
Which one of the following shows coiled RNA stands and capsomeres?
Polio virus
Tabacco mosaic virus
Measles virus
Measles virus
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