Nucleic Acids and RNA Quiz

Nucleic acids are polymers of:

• Amino acids

• Nucleotides

• Fatty acids

• Sugars

Which of the following is a purine?

• Thymine

• Uracil

• Adenine

• Cytosine

Pyrimidine bases in DNA are:

• Adenine, guanine

• Cytosine, thymine

• Cytosine, adenine

• Guanine, thymine

The sugar in RNA is:

• Deoxyribose

• Ribose

• Fructose

• Galactose

The bond between phosphate and sugar in nucleotides is:

• Hydrogen bond

• Phosphodiester bond

• Glycosidic bond

• Peptide bond

The diameter of the DNA double helix is approximately:

• 10 Å

• 20 Å

• 30 Å

• 50 Å

In B-DNA, there are how many base pairs per turn?

• 8

• 10

• 12

• 14

Z-DNA differs from B-DNA in being:

• Right-handed

• Left-handed

• Non-helical

• Single-stranded

The base composition rule (A=T, G=C) was proposed by:

• Watson

• Crick

• Chargaff

• Franklin

DNA with higher G–C content has:

• Lower melting temperature

• Higher melting temperature

• Same Tm as A–T rich DNA

• Unstable structure