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During transcription, the binding of RNA...

During transcription, the binding of RNA polymerase to the DNA is the prerequisite for the process to start.
In prokaryotes this site,
(a) Consists of 6 nucleotide bases,
(b) Is TATAAT,
(c) Is located 10 bp upstream from the start point.
(d) Is present in promoter region

A

only (a)and (b)are correct

B

only (b)and (c)are correct

C

only (c) and (b) are correct

D

all (a) (b) (c)and (d) are correct

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Mark the incorrect differences between eukaryotic and prokaryotic transcription. I. In eukaryotes , the genes are split having exons and introns while in prokaryotes it isn't . ii The structural gene which is to be transcribed is generally mono- cistronic in prokaryotes and poly-cistronic in eukaryotes . III . The RAN formed with the help of RNA polymerase in eukaryotes requires future processing to function as m-RNA while in prokaryotes it is directly used as m - RNA. IV. In eukaryotes, RNA polymerase binds to the promoter region while in prokaryotes it binds to the operator region .

Observe the given diagram and find out the incorrect statement: (I) Promoter: It can be defined as a DNA sequence that serves as the binding site for RNA polymerase. (II) The binding site is located at the 5'-end (upstream) of the structural gene. (III) Terminator is located towards 5'- end (downstream) of the coding strand. (IV) The structural gene coding for a particular protein is flanked by the promoter and terminator.

The lac operon consists of a regulation gene and three structural gene. The lactose acts as inducer. In the presence of an Inducer such as lactose, the repressor is in inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon. What provides binding site to RNA polymerase?

The lac operon consists of a regulation gene and three structural gene. The lactose acts as inducer. In the presence of an Inducer such as lactose, the repressor is in inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon. Identify the correct sequence of the structural genes in the lac operon.

Which of the following statements regarding transcription are correct? Br a. Transcription governs the principle of complementarity. Brb. If both strands of DNA act as a template, they would code for RNA molecule with same sequences. Br c. Double stranded RNA formed after transcription promotes RNA from being translated into protein. br d. Like the process of replication, the total DNA of an organism gets duplicated in transcription also

The lac operon consists of a regulation gene and three structural gene. The lactose acts as inducer. In the presence of an Inducer such as lactose, the repressor is in inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon. The lac operon of E. coli contains genes involved in lactose metabolism. It's expressed only when lactose is _____ (1)and glucose is _____(2).

The lac operon consists of a regulation gene and three structural gene. The lactose acts as inducer. In the presence of an Inducer such as lactose, the repressor is in inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon. Which of the following statement is true in reference to the lac operon process in E.coli? (i) Galactosidase is the only enzyme produced in large quantities when lac operon is turned on (ii) The messenger RNA in lac operon is a polycistronic mRNA

The following features occur during protein synthesis: (a) Movement of mRNA from the nucleus into the cytoplasm, where it binds to the ribosomes (b) Formation of tRNA-amino acid complex (c) Transcription of specific segments of DNA into mRNA molecules in the nucleus (d) Binding of N-terminal amino acid, methionine tRNA to the 'P' site of the ribosome. The tRNA anticodon 'pairs with AUG on mRNA' (e) Formation of peptide bond between first and second amino acids at the A site (f) Release of the complete polypeptide chain from mRNA and the ribosomes (g) Migration of dipeptide to form a tripeptide and then a polypeptide The correct order of events is:

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