Biology: DNA Structure and Replication

What does DNA stand for?

• Deoxy Ribosomes Acid

• Deoxyribonucleic acid

• Deoxyribo Protein

• Deoxyribonucleic Protein

DNA carries _____ information.

• genetic

• bacteria

• protein

• nucleic acid

Adenine, Thymine, Guanine and Cytosine are

• Oswald Avery's discovery.

• the 4 hydrogen bases present in DNA.

• the 4 nitrogen bases present in DNA.

• proteins.

Adenine and Thymine are always found in equal amounts in an organism and are always paired together.

• True

• False

Cytosine and Guanine are always found in equal amounts in an organism and always pair together

• True

• False

Adenine,Thymine, Cytosine and Guanine are made up of what chemical?

• Deoxyribose

• Nitrate

• Hydrogen

• Nitrogen

The two types of nitrogen bases are

• purines and bases.

• pyrimidines and purines.

• pyrimidines and bases.

Pyrimidines are ____ ring bases.

• Single

• Double

• Triple

Purines are ____ ring bases.

• Single

• Double

• Triple

Which two nitrogen bases are purines?

• Adenine and Thymine

• Guanine and Cytosine

• Thymine and Cytosine

• Adenine and Guanine