The RNA polymerase holoenzyme transcribes:
Answer: the structural gene and the terminator regions
To initiate translation, the mRNA first binds to:
Answer: The smaller ribosomal sub-unit
Repressor proteins are coded for by ______ genes.
The organelles in the cell where protein synthesis occurs are ______.
PCR and Restriction Fragment Length Polymorphism are the methods fo
Answer: Genetic fingerprinting
What is antisense technology?
Answer: When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene
A DNA segment which serves as a kind of “on-off switch” for transcription is a/an ______.
Which one of the following does not follow the central dogma of molecular biology?
In some viruses, DNA is synthesised by using RNA as template. Such a DNA is called
Discontinuous synthesis of DNA occurs in one strand, because:
Answer: DNA dependent DNA polymearse catalyses polymerisation only in one
direction (5’ → 3’)
Both deoxyribose and ribose belong to a class of sugars called:
Which of the following statements is the most appropriate for sickle cell anaemia?
Who amongst the following scientists had no contribution in the development of the double helix model for the structure of DNA?
Answer: Meselson and Stahl
Which of the following steps in transcription is catalysed by RNA polymerse?
While analysing the DNA of an organism a total number of 5386 nucleotides were found out of which the proportion of different bases were: Adenine = 29%, Guanine= 17%, Cytosine = 32%, Thymine = 17%. Considering the Chargaff’s rule it can be concluded that:
Answer: No conclusion can be drawn
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