DNA Structure and Replication BTA

Of these four molecules, given the names, which would you think is an enzyme?

• Nuclein

• Lactase

• Glucose

• Amino Acid

Match the following

• Indicates whee DNA replication begins

• Ligase

• builds the complimentary DNA strand

• Helicase

• breaks the hydrogen bonds btwn the base

• Polymerase

• bonds DNA fragments together

• Primase

Reorder the following

• Ligase bonds DNA fragments

• Polymerase builds complimentary DNA strand

• Primase marks region to begin replication

• DNA is unzipped

After replication, each strand has ​ (a)   new strand(s) and ​ (b)   old strand(s).

• one
• two
• zero

Which enzyme is responsible for adding nucleotides?

• Helicase

• DNA Polymerase 3

• DNA Polymerase 1

• Primase

DNA polymerase is able to build the new DNA ______ along the leading strand.

• continuously

• only in short fragments

• very slowly

• prokaryotically

Based on the diagram, the enzyme (represented in gray) is most likely...

• DNA polymerase

• Ligase

• Primase

• Helicase

Okazaki fragments are found on the _______________ strand

• Leading

• Lagging

DNA is built in this direction

• 5^' to 3' (new nucleotides added to the 3' end)

• 3' to 5' (new nucleotides added to the 5' end)

• 3' to 5' (new nucleotides added to the 3' end)

• 5^' to 3' (new nucleotides added to the 5' end)

What are the 4 nitrogen bases?

• adenine, thymine, cytoplasm, and guanine
• adenine, thymine cytosine, and guanine
• adenine, thymine, cytosine, and gylcerol
• adenine, thymine, cytosine, and glucose