Structure and functions of RNA

What kind of nitrogenous bases of the pyrimidine series enter into the composition of RNA?

• А, Т

• А, G

• G, T

• C, U

RNA consists of the following components:

• nitrogen base, residues of phosphoric acid, ribose

• nitrogen base, residues of phosphoric acid, deoxyribose

• nitrogen base, residues of phosphoric acid, glucose

• nitrogen base, residues of sulfuric acid, ribose

What kind of nitrogenous bases not enter into the composition of RNA?

• A

• G

• U

• T

What the nitrogenous bases of the purine series entered into the composition of RNA?

• A, T

• A, G

• G, T

• C, U

What the nitrogen bases entered into the composition of RNA?

• A, G, C, T

• A, G, C, U

• A, T, G, Z

• A, K, G, U

What bond linked mononucleotide in primary structure of RNA?

• peptide bond

• hydrogen bond

• 3’5’- phosphodiester bond

• ionic bond

How many codons are in the eukaryotic cell?

• 62 sense codons and 3 stop codons

• 61 sense codons and 3 stop codons

• 61 sense codons and 4 stop codons

• 64 sense codons and 3 stop codons

What kind of interaction stabilized double-stranded sections of RNA which forms a "hairpin"?

• by complementary interactions

  A-U, G-C

• by complementary interactions

  A-T,

  G-C

• by complementary interactions

  A-U, T-C

• by complementary interactions

  A-T, G-U

Where localized anticodon?

• rRNA

• DNA

• mRNA

• tRNA

What is the composition of eukaryotic ribosomes?

• small (40S), medium (50S) and large (60S) subunits

• small (40S) and medium (50S) subunits

• small (40S) and large (60S) subunits

• medium (50S) and large (60S) subunits