(24)Before you arrive for the Survey of Prokaryotes lab, please

1. Read the lab thoroughly, noting all safety guidelines.

2. Answer these preparatory questions:

What safety procedures should you be sure to follow during this lab period?

______

______

______

What sort of evidence led to the reorganization of the taxonomy of prokaryotes in 1996?

______

Describe the general nature of the habitats of organisms in domain Archaea.

______

What is the other domain of prokaryotes?______

When a taxonomic scheme is established for a species or for groups of species, is it permanent? If not, what can change established taxonomy?

______

______

If you are examining an unknown cell through the microscope, list three ways that distinguish it as a prokaryote and not a eukaryote.

______

How would Bacillus anthracis appear different from Spirillum volutans? Do all bacterial names reflect the appearance of the bacteria as these do?

______

______How is binary fission different than mitosis?

______

______

______

______

How might conjugation benefit bacterial survival?

______

______

______

Gram negative bacteria are generally more resistant to antibiotics than Gram positive bacteria. Using Figure 24.6 as a guide, what structure in Gram negative bacteria (but not Gram positive bacteria) supports this idea? ______

How does oil help in the visualization of structure through the microscope?

______

Can you ever see bacteria with the naked eye? Explain your answer.

______

How do bacteria make nitrogen available to living things?

______Below is a diagram of 4 different antibiotics (numbered 1-4 and shown as a in the diagram) that are being tested in a petri dish that has been inoculated with bacteria. After a sufficient incubation period, bacterial growth occurred over the plate in all areas except in the zones of inhibition (shown with in the diagram) around the antibiotics. Would you choose antibiotic 1, 2, 3, or 4 to limit the growth of this bacterium?______

1 antib 4 2 3

From the results shown here, would it be reasonable to conclude that the most effective antibiotic in this example would be an effective antibiotic against any bacterium? Why or why not?

______

Do cyanobacteria have chloroplasts?______

You are presented with an unknown cell, and are charged with the duty of its identification. As you study the cell, you note that it lacks a nucleus, it has unusual cell walls, and that is rRNA is distinctly different. To which domain would you assign it?

______

List five human disease that are caused by bacteria. Include the name of the disease and the name of the bacteria that cause the disease.

Human Disease Bacterial cause of the disease Is boiling water an effective way to kill all bacteria? Explain your answer.

______

______

______

Write an equation for nitrogen fixation that shows the reagents, enzyme, and product.

______