10
is an enzyme that recognizes specific base sequences in DNA and cuts
F.
at or near those sites.

(E)
9 that strong stimulates transcription of a gene or genes, are usually found
upstream of the genes they influence, but they can also function if inverted or
moved hundred or even thousands of base pairs away.

(D) A short (18-25) RNA produced naturally in cells that can control the expression of
cellular genes by causing destruction of specific mRNAs, or blocking their
translation is 8

30. Multiple forms of eukaryotic RNA polymerase. Which of the following
description about the roles of eukaryotic RNA polymerases is not correct?
(A) RNA polymerase I synthesize 18S rRNA; (B) RNA polymerase II synthesize
mRNAs; (C) RNA polymerase synthesize tRNAs; (D) RNA polymerase IV synthesize　5S rRNA;(E) RNA-dependent RNA polymerase catalyzes the replication of RNA from
an RNA template.

29. Which is correct order of following stages in transcription initiation?
(1) Forming the open promoter complex.
(2) Forming the closed promoter complex.
(3) Promoter clearance.
(4) Incorporating first few nucleotides.
(A) 1, 2, 3, 4; (B) 1, 4, 3, 2; (C) 2, 1, 4, 3; (D) 1, 2, 4, 3; (E) 3, 1, 2, 4.

28. Spliceosome contains several snRNPs. Which of the following description of each
snRNP is not matched with its function?
(A) U1: base pairs with 5' splice site of pre-mRNA; (B) U2: base pairs with the
conserved sequence at splicing branch point of pre-mRNA; (C) U3: base pairs with 3'
splice site of pre-mRNA; (D) U4: Base pairs with U6; (E) U5: associates with last
nucleotide in one exon and the first nucleotide in the next exon.