DNA Replication

Question 1

What are the two stages of cell division?

Answer 1

• Nuclear Division

* Cytokinesis

Question 2

What is nuclear division?

Answer 2

The process in which the nucleus divides ( mitosis and meiosis )

Question 3

What is cytokinesis?

Answer 3

The stage in which the whole cell divides.

Question 4

What is required for semi conservative replication to take place?

Answer 4

• Four types of nucleotide
• Both strands of DNA molecule to act as a template
• DNA polymerase
• Source of chemical energy.

Question 5

What is the process of semi conservative replication?

Answer 5

• Enzyme DNA helicase breaks the hydrogen bonds between bases on the two polynucleotide DNA strands, strands will then unwind.
• Each exposed polynucleotide strand then acts as a template to which complementary free nucleotides bind by specific base pairing. A-T, G-C.
• Condensation reaction joins the nucleotides of the new strands together by the enzyme DNA polymerase to form he missing polynucleotide strand on each of the two original polynucleotide strands of DNA.
• Each of the new DNA molecules contains one of the original DNA strands.