A14. Consensus following? sequences in the -10 and-35 promoter regions in prokar

Question

A14. Consensus following? sequences in the -10 and-35 promoter regions in prokaryotic genes bind which of the a. RNA polymerase b. DNA polymerase c. Ribosomes d. Initiator tRNA A15 The template DNA does NOT contain sequences matching the a. TATA box b. S UTR c. 3 UTR d. polyA tail e. introns A16. Which of the following codons does NOT specify an amino acid? a. AAA b. UAA c. AAU d. AUG e.UAU NH2 HOCHz OH OH C D A17. We know that the sugar portion of this molecule is ribose(vs deoxyribose) because of the -Oi1 group indicated by A18. The term "start codon" refers to the a. AUG start site for RNA pol transcription b. AUG start codon that starts translation c. origin that starts replication d. promoter that starts transcription A19. A particular eukaryotic pre-mRNA has 5 exons. How many introns does it have? a. two b. three c. four d. five e. Six A20. A5. All of the following contain BOTH RNA and protein EXCEPT b. snRNPs for splicing c. large ribosomal subunit e.polysomes a. nucleosomes d. small ribosomal subunit A21. The "cap" nucleotide of the eukaryotic mRNA is a. adenosine b. guanosine c.7 methyl-guanosine d. cytidine e. uridine

Explanation / Answer

A 14 -a RNA polymerase

A15 - d poly A tail

A16-b UAA a stop codon not coding any amino acid

A17 -c D - 2' OH is replaced by Hydrogen in deoxy ribose

A18 b - AUG is start point of translation

A19 c- 4 as 5 exon will have 4 intrinsic in between

A20 a nucleosome which are made up of histone protein and DNA fiber.

A21 c 7 methyl guanosine present at 5' end of a m RNA which protects it from degradation

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