A.1.2.3-1.2.5 Nucleic Acid Structure

Front

What are the four different bases in DNA and RNA known as?

Back

Nitrogenous bases.

Front

How many types of nucleotides are there in DNA and RNA?

Back

Four types of nucleotides.

Front

What allows any base sequence to be possible along a DNA or RNA molecule?

Back

The phosphate and sugar used to make the bond are the same, allowing any two nucleotides to be linked.

Front

How is information stored in DNA and RNA?

Back

Through the sequence of bases, stored in a coded form known as the universal genetic code.

Front

What is RNA described as in terms of its structure?

Back

A single, unbranched polymer of nucleotides.

Front

What type of reaction links nucleotides in RNA?

Back

A condensation reaction.

Front

What happens during a condensation reaction in RNA formation?

Back

Two molecules are combined to form a single molecule, and water is eliminated.

Front

What groups are involved in the condensation reaction linking nucleotides?

Back

Hydroxyl groups (OH) on the phosphate of one nucleotide and on the pentose sugar of another nucleotide.

Front

What is produced when the OH groups are combined during the condensation reaction?

Back

Water is produced.

Front

What forms the new covalent bond linking two nucleotides?

Back

The remaining oxygen after the elimination of water.