Bacteria and Protista bio lab

Bacteria and Protista bio lab - Justin Jacques Bio lab...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Justin Jacques Bio lab section Lab section Grad TA: Bacteria and Protista Introduction: Bacteria often compete with other bacteria and organisms by secreting chemicals called antibiotics that stop the spread of other bacteria. Antibiotics are used to kill off a bacterial infection. The most common antibiotic is penicillin. There are two types of bacteria; Archaebacteria and Eubacteria. Archaebacteria is one of the oldest life forms on earth and they still exist today. Eubacteria is a more advanced form of Archaebacteria because they have membrane bound organelles. Protozoa’s are closely related to organisms because they can move and can ingest food. They are put into their own category is because they are unicellular. The objective to the first experiment was to test different antibiotics on E. coli and Staphylococcus . The second part of the experiment was to test natural substances on the E. coli and Staph. The third part of the experiment was to test the photorabdus which is a known antibiotic to stop both E. coli and Staph. The next part of the experiment was to successfully test both bacteria by using the gram stain technique. If the bacteria were purple then the bacteria would be gram positive because it has a thicker cell wall that holds the stain in better. If the bacteria were pink then the bacteria would be gram negative because its cell wall is thin and doesn’t hold the stain well enough.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/17/2008 for the course BIOLOGY 41 taught by Professor Albaker during the Spring '08 term at New Hampshire.

Page1 / 5

Bacteria and Protista bio lab - Justin Jacques Bio lab...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online