Unformatted text preview: 40. Â» 41. 42. 43. 44. The Shine-Dalgamo sequence: - Is a eukaryotic origin of replication signal. @ Is a site on prokaryoï¬c mRNA that may interact With rRNA in the small C)
ribosomal unit. C) Is the name given to the poly(A) tail of prokaryotic mRNA; D) Is the restriction endonuclease site common to most bacterial plasmids. oq E) Is a sequence which reads the same forward and backward. Â§ () aft W W During the process of peptide chain elongation, the growing peptide chitin: B) Is linked to the ribosomal RNA.
CV Is not linked atalltoany RNA. g5? Is linked to the 3'~0H of the terminal nucleoside of tRNA.
Is linked to peptidyl transferase. A) Is linked to the mRNA. Q Restriction endonucleases: A) Digest DNA duplex molecules ï¬ow the 5' 0H ends. (Â£5 Attack only ssDNA. ( . Have base sequence speciï¬city. . .
D) Degrade exogenous doubleâstranded DNA molecules.
E) - Are produced by eukaryotes as a defense against bacteria.
Xeroderma pigmentosum is a genetic disease characterized by: A) â Loss of melanin pigment in the skin. . B Hypersensitivity toinï¬aredradiation.â ' . C
A defect in DNA repair. Aldosterone insuï¬iciency.
E) A defect in tryptophan metabolism. During nuclear processing of a pre-mRNA in cukaryotes, the nucleotides discarded are: _ ' Excns.
â B Intronss
Duplicate genes; D) Methylated regions. ((5
E) Poly(A) chains. 157 ...
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- Spring '08