Cell Cycle, DNA Replication, and Mitosis

Which enzyme unzips DNA by breaking hydrogen bonds?

• Initaror

• DNA Polymerase

• DNA Ligase

• Helicase

Which protein binds to each unzipped strand to keep DNA strands from forming a double helix?

• Toipoisomerase

• Single-Strand Binding Protein

• Helicase

• Single-Stranded Binding Enzyme

Which enzyme is adds RNA primer near the initiation site?

• RNA Primer

• Initiator

• Primase

• Initiator Primer

Which enzyme binds to unzipped DNA to build a new DNA strand?

• DNA Replication

• Single-Strand DNA Binding Enzyme

• DNA Ligase

• DNA Polymerase

Which enzyme connects Okazaki fragments?

• DNA Polymerase

• Okazaki Enzyme

• DNA Ligase

• Reverse Loop

What are fragments from the lagging strand called?

• Lagging Fragements

• Okazaki Fragments

• DNA Fragments

• Intron Fragments

If the percentage of DNA is made of 30% Thymine, what is the correct percentage of Guanine?

• 30
• 15
• 20
• 60

Replicate the following strand of DNA: 
AATCATGGA

• AATCATGGA
• TTAGTACCT
• UUAGUACCU
• GGATAUCUA

DNA replication results in two DNA molecules,

• each one with two original strands
• each one with two new strands
• each one with one new strand and one original strand
• one with two new strands and the other with two original strands

A scientist observes a base sequence of AGCTAGCTAGCT.  Which of the following would be the complimentary strand?

• TGCATGCATGCA
• TCGATCGATCGA
• TAGCTAGCTAGC
• TTAAGGCCTTCC