1. Replication of DNA

2. Before a cell divides it must duplicate its DNA, so that the new cell will have a complete set of DNA. Each strand of DNA serves as a template against which a new strand is made.
video

3. The copying process is called “Replication” and is carried out by a series of enzymes. The enzymes unzip the DNA strands, insert appropriate bases, and produce sugar-phosphate links to extend the growing DNA.

4. The unzipping breaks the hydrogen bonds between bases, allowing new hydrogen bonds to form.

5. RNA
Ribonucleic Acid

6. Acts as a messenger between DNA and the ribosomes
Carries out process by which proteins are made from amino acids
Founds as three forms which you will learn about in Biology 12: mRNA (messenger), tRNA (transfer), rRNA (ribosomal)

7. RNA structures 5 carbon sugar (ribose) Phosphate Nitrogenous base:
i. Adenosine
ii. Cytosine
iii. Guanine
iv. URACIL

8. Difference between RNA and DNA
Some
Bodies
Have
Sexy
Legs
deoxyribose
ribose
sugar
bases
thymine
uracil
helix
yes no
strands 1 2
throughout cell
location
nucleus

9. Homework!!!
Review 7.2 #1-4