RNA STRUCTURE QUIZ

RNA instability in alkaline solutions is due to

ribose

adenine

single strand nature

uracil

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Which of following RNA characteristically contains unusual purines and pyrimidmes?

tRNA

rRNA

nRNA

mRNA

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A nicked RNA molecule can be ligated by

T4 RNA ligase

T4 DNA ligase

DNA polymerase

all of these

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Which of the following is the smallest of the RNAs?

All of these

Ribosomal RNAs

Transfer RNAs

Messenger RNA

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During RNA synthesis, the DNA template sequence 5'Tp Ap Gp Cp 3' Would be transcribed to produce which of the following RNA sequence?

5'-Ap Tp Cp Gp-3'

5'-Gp Cp Up Ap-3'

5'-Ap Up Cp Gp-3'

5'-Gp Cp Tp Ap-3'

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The genetic material of retroviruses such as HIV is

all of these

RNA

protein

DNA

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The tertiary structure of yeast tRNA

is maintained mostly by non-Watson-Crick base pairing

resembles the 3-dimensional structure of other tRNAs

involves extensive base stacking interactions

All of these

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What modified base is at the 5' extremity of a capped eukaryotic m-RNA?

1-methyl-adenosine

1-methyl-guanosine

7-methyl-guanosine

2'-O-methyl-guanosine

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In RNA, uracil pairs with

adenine

guanine

cytosine

thymine

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The mRNA from which of the following would contain a poly-A tail?

Bacterial alpha-amylase

Human insulin

A restriction endonuclease from E. coli

Bacteriophage DNA ligase

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