What is selective media?

What is the reagent used?

Give an example.

suppresses the growth of unwanted bacteria and encourages the growth of the desired organisms.

Sabourand's dextrose agar.

The pH is 5.6 is selective for fungi that should outgrow most bacteria

What is differential media?

What is the reagent that is used?

List an example.

used to distingush colonies of the desired organism from other colonies growing on the same plate

blood agar

streptococcus is hemplytic

The DNA of Man

1. Double strand DNA in linear chromosome

2. Has histones

3. Eukaryote has nucleus

4. Has introns

Transcription is in the nuclues. Translation is in the cytoplasm. mRNA has to be transported after introns are removed

The DNA of Bacteria

1. Double stranded DNA in one circular chromosome

2. NO histones

3. Prokaryote has no nucleus

4. No introns

They start before trascription