Nucleic acids

Which is of the following is NOT one of the elements found in all nucleic acids?

• C

• P

• S

• N

Which of the following molecule is NOT a nucleic acid:

• ATP

• mRNA

• Polypeptide

• DNA

what is this molecule?

• A cytosine base

• A ribose sugar

• A uracil base

• A deoxyribose sugar

This molecule could be found in which type of nucleic acid?

• mRNA

• DNA

• Protein

• RNA polymerase

Identify the different parts of this nucleotide:

• Red= phosphate group; Blue= nitrogenous base; Yellow= ribose sugar

• Red= phosphate group; Blue= deoxyribose sugar; Yellow= nitrogenous base

• Red= deoxyribose sugar; Blue= nitrogenous base; Yellow= phosphate group

• Red= phosphate group; Blue= ribose sugar; Yellow= nitrogenous base

In which direction does the RNA polymerase move along the template strand of the DNA?

• from 3' to 5'

• from 5' to 3'

• It can move in both directions

• It depends on the strands

Which of the following processes is NOT needed during the expression of the genetic information?

• Translation

• the separation of the strands of DNA

• DNA replication

• Transcription

The process of transcription is organized in different steps; put them in the right order.

• Termination, elongation, initiation

• Binding, initiation, termination

• Initiation, binding, elongation

• Initiation, elongation, termination

The following molecule is a nucleotide. What can you say about the base carried by this nucleotide?

• It is either a G or A base

• It is either C or G base

• It is either a C or U base

• It is either a C or T base

Which type of force holds the two strands of DNA together?

• Hydrogen bonds

• Covalent bonding

• Ionic bonding

• Hydrophobic interactions