The Molecular Basis of Inheritance

If Erwin Chargaff finds that 36% of a particular frog's DNA bases are thymine, then what percent of the DNA bases are either cytosine or adenine?

• 36%
• 28%
• 72%
• 50%

Which of these enzymes is not a part of DNA Replication?

• Helicase
• Topoisomerase
• Ligase
• Hexokinase

If DNA Polymerase is reading the following sequence: 3'-AATCGC-5' what will the enzyme add to the growing DNA strand?

• 5'-GCGATT-3'
• 5'-TTAGCG-3'
• 5'-AATCGC-3'
• 3'-AATCGC-5'

When synthesizing a new DNA strand, DNA polymerase writes ________

• 5' to 3'
• 3' to 5'
• 3' to 5' or 5' to 3'

Which nitrogen base does RNA have that DNA does not?

• Thymine
• Adenine
• Uracil
• Cytosine

What enzyme is responsible for laying down the RNA primers during DNA Replication?

• Helicase
• RNA Primase
• Ligase
• There are no RNA primers during DNA Replication

Which of these enzymes is responsible for breaking the hydrogen bonds which "unzips" the DNA molecule?

• Topoisomerase
• Primase
• Helicase
• zippase

Which enzyme is responsible for adding nucleotides?

• Topoisomerase
• DNA Polymerase
• Ligase
• Primase

This image shows that DNA Replication is _______.

• Conservative
• Semiconservative
• Dispersive
• Spontaneous

Which strand is synthesized continuously during DNA Replication

• Leading Strand
• Lagging Strand