2.6 Structure of DNA and RNA Questionbank

I and II only

III only

I, II and III only

I, II, III and IV

15%

30%

35%

It cannot be determined from the information given.

I only

I and II only

I and III only

II and III only

sugar - base - phosphate

sugar - phosphate - base

phosphate - sugar - base

sugar - phosphate - base - base - phosphate - sugar

Uracil replaces thymine in RNA.

The amount of A is equal to the amount of T and the amount of G is equal to the amount of C .

Nucleic acids contain the same bases in all species.

mRNA codons are assigned to the same amino acids in different species.

The enzyme works faster.

The enzyme works slower.

The enzyme can perform a new role.

The enzyme can make the reverse reaction proceed faster.

A sequence of nucleotides on rRNA that corresponds to an amino acid

A sequence of nucleotides on mRNA that corresponds to an amino acid

A sequence of nucleotides on tRNA that corresponds to an amino acid

A sequence of nucleotides on DNA that corresponds to an amino acid

By being used up in the reaction

By increasing activation energy

By changing the pH of the reaction

By lowering activation energy

50

200

800

1000

Ribose

Thymine

Guanine

Deoxyribose