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During transcription, RNA polymerase ho...

During transcription, RNA polymerase holoenzyme binds to a gene promoter and assumes a saddle - like structure. What is it's DNA - binding sequence?

A

TATA

B

TTAA

C

AATT

D

CACC

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RNA polymerase which is on the promoter, moves to the structural genes to transcribe them. However, it happens when

Consider the following statements i. r-RNA provides the template for synthesis of proteins ii. t-RNA brings amino acids and reads the genetic code iii. RNA polymerase binds to promoter and initiates transcription iv. A segment of DNA coding for polypeptide is called intron

During the eukaryotic transcription, the genetic information encoded in the DNA will be transferred to m-RNA. The m-RNA thus formed will be processed and utilized to synthesize a protein. a. Both the DNA strands are not copied during transcription. Why? b. What do template and coding DNA strands represent? c. What will be the result, if RNA is not spliced before translation?

The questions below consists of statements of an Assertion and Reason. Use the following key to choose appropriate answer. If both assertion and reason are correct and reason is the correct explanation of the assertion If both assertion and reason are correct, but reason is not the correct explanation of the assertion If assertion is correct, but reason is incorrect If both assertion and reason are incorrect: Assertin : Both the strands of DNA can be copied during transcription. Reason : The two strands of the DNA in the structural gene of a transcription unit have same polarity.

Assertion: Both the strands of DNA can be copied during transcription. Reason: This will help to produce more RNA with different sequences.

Give one word for the following. a. Genes that are constantly requires for cellular activities. b. Sequences of nitrogen bases in mRNA containing the information for protein synthesis. c. Transcription of DNA from RNA d. A segment of DNA e. Synthesis of DNA from pre-existing DNA. f. Small genetic unit that can mutate

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