STRUCTURE AND PROPERTIES OF PEPTIDES QUIZ

Which stop codon has been found to encode selenocysteine?

UAA

UAG

AGA

UGA

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YOUR ANSWER : ?

What was the first bacterial genome to be sequenced and made public?

Escherichia coli

Bacillus subtilis

Haemophilus influenzae

No bacterial genome has been sequenced yet

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What is the maximum number of different amino acids in a polypeptide chain coded by the synthetic polyribonucleotides (UCAG)5?

Three

One

Four

Two

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YOUR ANSWER : ?

Which of the termination codon is called amber?

UAG

AUG

UGA

UAA

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The ribosome binding site

is more likely to be associated with an operon than with a gene encoding a single protein

forms a stem-loop structure in the RNA

is located upstream of the promoter sequence

is located immediately upstream of the start codon

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YOUR ANSWER : ?

Which phage always carries a small piece of E.coli genome?

T3

Mu

T4

Lambda

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Which binding is inhibited by pactamycin?

Peptidyl t-RNA to the 50S subunit

Aminoacyl-tRNA to the A-site of 30S subunit

Initiator-tRNA to 30S/40S initiation complexes

Formation of peptide bond in P site

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YOUR ANSWER : ?

When was the genetic code completed?

1958

1968

1952

1966

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The Shine-Dalgarno sequence is

the reading frame of a gene

a short sequence that acts as a ribosomal binding site

a stop codon

trailer sequence

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YOUR ANSWER : ?

Which of the following molecule catalyzes the transpeptidation reaction?

DNA ligase

RNA polymerase

DNA polymerase

Peptidyl transferase

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YOUR ANSWER : ?