DNA Replication - Pre Test

Because each newly synthesized double helix DNA contains 1 new strand and 1 old strand, this process of DNA Replication is said to be _________________________.

• semi conservative

• Helicase

• central dogma of biology

• DNA primase

Because DNA is a helical structure, this molecule contains lots of strain from being extremely twisted up and round histones. The enzyme required to loosen and reduce this strain is ___________________.

• topoisomerase

• okazaki fragments

• DNA primase

• LIgase

What enzyme is capable of ONLY adding DNA base pairs in the 5'--> 3' direction?

• DNA Ligase

• DNA Polymerase

• DNA Primase

• DNA Helicase

This enzyme is responsible for "gluing" together DNA

• ligase

• dna polymerase

• dna helicase

• topoisomerase

Replicate the following strand of DNA: 
AATCATGGA

• AATCATGGA
• TTAGTACCT
• UUAGUACCU
• GGATAUCUA

Tags

NGSS.HS-LS1-1

The enzyme that unzips the DNA to prepare for replication

• helicase
• replicase
• polymerase
• synthase

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

The bonds that hold the two strands of DNA together come from...

• the attraction of phosphate groups 
• strong bonds between  bases and sugars
• carbon to carbon bonds in the sugar
• weak hydrogen bonds between the bases

The DNA nucleotide is composed of three parts. Which two components make up the nucleotide backbone?

• ribose sugar and base
• ribose sugar and phosphate group
• nitrogen base and deoxyribose sugar
• deoxyribose sugar and phosphate group