DNA History, structure, transcription and translation

The work of which scientist(s) determined that DNA is the hereditary material instead of proteins?

• Chargaff

• Griffith

• Hershey and Chase

• Franklin

Which is NOT a component of a DNA nucleotide?

• phosphate group

• deoxyribose

• nitrogenous base

• amino acid

The work of which scientist(s) determined base pairing rules?

• Chargaff

• Griffith

• Hershey and Chase

• Avery

Which sugar is contained in DNA

• Dextrose
• Ribose
• Deoxyribose
• Glucose

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• cytosine
• guanine
• thymine
• uracil

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

What are the three components of a DNA nucleotide?

• A phosphate, nitrogenous base, and an amino acid

• A nitrogenous base, a sugar, and an amino acid

• A phosphate, a sugar, and a nitrogenous base

• A nitrogenous base, sugar, and a helix

Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

The two strands of DNA are held together by what type of bond?

• Ionic
• Covelant
• Polar
• Hydrogen

What did Erwin Chargaff conclude from his experiments?

• Nitrogen bases are held together by peptide bonds
• A and T, C and G always occur in equal amounts
• Proteins are the carriers of genetic information
• C and G rarely occur in eukaryotic organisms