3,9 DNA Replication And Genetic Code

Question 1

What is DNA replication

Answer 1

Two strands of DNA double helix separate into two two strands and then each strand provides a template for the creation of new Douboe helix dna

Question 2

First DNA unwinds and separate.Hydrogen bonds are broken (that hold the complementary bases)These free DNA nucleotides will pair with their complementary bases.Hydrogen bonds then form.New nucleotides join their adjacent nucleotides with what kind of bonds

Answer 2

Phosphodiester bonds

Question 3

What is semi-conservative

Answer 3

Half the same DNA

Question 4

Which enzyme unzips the DNA

Answer 4

DNA helicase - travels along DNA backbone break hydrogen bonds

Question 5

What does DNA polymerase do?

Answer 5

The enzyme connect free nucleotides pair with the newly exposed bases which form phosphodiester bonds between these nucleotides

Question 6

Which strand will produce small sections of DNA

Answer 6

The lagging strand

Question 7

Why does small fragments of dna occur

Answer 7

Because DNA polymerase only goes up the 3 5 strand not 5 3

Question 8

What is a codon

Answer 8

Triplet if bases that code for an amino acids

Question 9

What is a gene

Answer 9

A section of dna that contains the complete sequence of bases