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WorksheetsB.12.3 The Replication of DNA
Total questions: 14
Worksheet time: 7mins
Each new DNA molecule has:
two new strands
one new strand, one original strand
two original strands
strands that are mixed up
DNA replication is
conservative
semi-conservative
dispersive
random
Adds new nucleotides to build new strand
primase
DNA polymerase
ligase
helicase
telomerase
Determines point at which replication should start
primase
DNA polymerase
ligase
helicase
telomerase
Protects the ends of the DNA strand so that nothing is lost
primase
DNA polymerase
ligase
helicase
telomerase
Unzips the DNA molecule
primase
DNA polymerase
ligase
helicase
telomerase
Puts the fragments of new DNA together
primase
DNA polymerase
ligase
helicase
telomerase
DNA is replicated
in the 3' to 5' direction
in the 5' to 3' direction
in any direction
randomly
5' to 3' or 3' to 5' refers to:
the shape
the code in the new strands
the type of DNA polymerase needed
the orientation of the 5-carbon sugar
The strands in a DNA molecule are:
held together by hydrogen bonds between base pairs
antiparallel
parallel
complementary
made of proteins
On the lagging strand, DNA is:
not copied
copied continuously
copied backwards in pieces
discarded
On the leading strand, DNA is:
not copied
copied continuously
copied backwards in pieces
discarded
What are Okazaki fragments?
pieces of new DNA forming on the lagging strand
pieces of new DNA forming on that leading strand
pieces of DNA that are discarded
pieces of RNA that serve as primers
DNA can only be copied in the:
eukaryotic cell
5' to 3' direction
3' to 5' direction
reverse order
