DNA Replication Flashcards

1
Q

What happens before cells divide?

A

All DNA must replicate to provide a copy for the new cell.
the process of DNA replication is semi conservative replication(one strand from parental,one newly synthesised)

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2
Q

What is involved in semi conservative replication?

A

Complementary base pairs
-A-T
-C-G
enzymes
-DNA helicase
-DNA polymerase

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3
Q

Step one of semi conservative replication?

A

DNA helicase breaks h-bonds between comp base pairs between 2 strands
This causes the double helix to unwind

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4
Q

Step 2 of semi conservative replication?

A

Each sep strand acts as a template
Enables comp DNA nucleotides to attract to their base pair on the template strand

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5
Q

Step 3 of semi conservative replication?

A

Adjacent nucleotides by condensation reaction to form phosphodiester bonds
DNA polymerase catalyses this joining of nucleotides

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6
Q

Step 4 of semiconservative replication?

A

2 sets of daughter DNA contains one strand of the parental DNA and one newly synthesised

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7
Q

Step 4 of semiconservative replication?

A

2 sets of daughter DNA contains one strand of the parental DNA and one newly synthesised

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