Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as (1) Polysome (2) Polyhedral bodies (3) Plastidome (4) Nucleosome Answer : (1) Polysome...
The structural genes of lac operon transcribe mRNA which is a) polycistronic b) replicative c) monokaryotic d) monocistronic Answer : a) polycistronic...
Cistron is a) The coding sequence of DNA b) The functional unit of DNA molecule that codes for a particular gene product c) Intervening non coding sequence of DNA d) The sequences which are removed during RNA splicing. Answer : b) The functional unit of DNA molecule that codes for a particular gene product c) Intervening non coding sequence of DNA...
Which of the following events occurred first ? (1) DNA structure of genes was discovered by James D Watson and Francis Crick (2) Yuri Gagarin became the first man in space (3) World's first human heart ... by Dr. Christian Barnard (4) World's first test tube baby Louise Brown was born in U.K Answer : DNA structure of genes was discovered by James D Watson and Francis Crick...
Which of the following statements is not valid for oxoacids of phosphorus? (1) All oxoacids contain atleast one P = O unit and one P – OH group (2) . (3) Hypophosphorous acid is a diprotic acid. (4) All oxoacids contain tetrahedral four coordinated phosphorous Answer : Orthophosphoric acid is used in the manufacture of triple superphosphate....
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