Genetics - Section 2 | Multiple Questions and Answers

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Genetics - Section 2 Multiple Questions and Answers.

16.	Which of the following RNA serves the regulatory functions including splicing, gene silencing?

	A.	mRNA
	B.	tRNA
	C.	rRNA
	D.	small RNA

17.	Which of the following statement is NOT true regarding transcription/RNA synthesis?

	A.	RNA synthesis occurs in the nucleus
	B.	Unlike DNA synthesis, the only selective sequence of DNA is transcribed to RNA
	C.	RNA synthesis requires a short stretch of RNA primers
	D.	DNA sequences, specific proteins, and small RNAs regulate RNA synthesis.

18.	The pentose sugar moieties are the primary structural difference between DNA and RNA. In addition which of the following is primarily associated with RNA molecule?

	A.	RNA consist of thymine instead of uracil
	B.	RNA molecules are highly branched structure
	C.	RNA molecules have higher structural complexities
	D.	RNA molecules are anti-parallel and double-stranded

19.	In prokaryotes, RNA polymerase catalyzes the synthesis of:

	A.	mRNA
	B.	rRNA
	C.	tRNA
	D.	All of the above

20.	The RNA polymerase is a multi-subunit enzyme that recognizes a consensus nucleotide sequence (promoter region) upstream of the transcription start site. In prokaryotes, the consensus promoter sequence

	A.	Enhancer box
	B.	Pribnow box
	C.	Transcription unit
	D.	None of the above

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