12/9/10

today we learned how restriction enzymes cut DNA into fragments. Gel electrophore sorts macromolecules by charge and length. DNA fragments have a negative charge and move toward the positive pole smaller fragments move faster than larger ones

October 18th

Today we learned how we get sick. Pathogens are one way to get sick.
Viruses are considered both life and non life, since they ahve characteristics of both.
Life: Highly organized with genes
Non-Life: not cellular, cannot reproduce on own

Viruses infect a living cell. one way they do this is the lyctic cycle, where DNA is injected by virus into host cell to produce copies of virus.
DNA viruses usually reproduce in host cell's cytoplasm, sometimes in nucleus.
Prokaryotes have been around for 2 billion years.

Next Scribe - Nick