A1.2 Nucleic acids

Front

What is the genetic material of all living organisms?

Back

• DNA (deoxyribonucleic acid)

Front

Do all viruses use DNA as their genetic material?

Back

• No, some viruses use RNA as their genetic material.

Front

Are viruses considered living organisms?

Back

• No, viruses are not considered living because they cannot reproduce on their own.

Front

What is the main role of DNA in living organisms?

Back

• DNA stores and transmits genetic information.

Front

What are the three components of a nucleotide?

Back

• A phosphate group, a pentose sugar, and a nitrogenous base.

Front

In a nucleotide diagram, what shape represents the phosphate group?

Back

• A circle.

Front

In a nucleotide diagram, what shape represents the pentose sugar?

Back

• A pentagon.

Front

In a nucleotide diagram, what shape represents the nitrogenous base?

Back

• A rectangle.

Front

What kind of bonding forms the sugar-phosphate backbone in DNA and RNA?

Back

• Covalent bonding.

Front

9. What is the sugar–phosphate backbone's role in DNA and RNA?

Back

• It forms a strong continuous chain that supports the structure of the molecule.