Chapter 2- Biochemistry- DNA Replication Flashcards Preview

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Flashcards in Chapter 2- Biochemistry- DNA Replication Deck (9):
0

What does helicase do?

Unwinds the DNA and separates the double stranded DNA by breaking the hydrogen bonds between complementary base pairs.

1

After the 2 nucleotides have been broken What do the newly single strands act as?

Template for the synthesis of two double stranded DNA molecules identical to the original.

2

What is DNA polymerase?

Type of enzyme that synthesis new strands from the 2 parental template molecules

3

In the environment of nucleoplasm what are there?

Many free-floating deoxynucleoside triphosphate
(Nucleotides with 3 phosphate groups)

4

What do the free-floating deoxynucledoside triphosphates do?

Align opposite their complementary base partner and covalently bond together with it

5

How are the free-floating nucleotides covalently bonded together?

Catalysed by the enzyme DNA polymerase which forms a complementary nucleotide chain

6

Draw an example of the double helix being unwound

Do it

7

What is the significance of complementary base pairing?

Each nitrogenous bases only pair with its complementary partner- therefore when DNA is replicated its 2 new strands will be identical to original strand

8

Draw an example of the new DNA with the 2 new strands.

Do it martha

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