(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
an
ti
bi
2
4
ot
ic3
s
(s
h
o be reasonable to conclude that the most
From the results shown here, would it
w
effective antibiotic in this example would
be an effective antibiotic against any
n
bacterium? Why or why not?
wi
th
______________________________________________________________________
in
th
Do cyanobacteria have chloroplasts?______________________________________
e
di and are charged with the duty of its
You are presented with an unknown cell,
identification. As you study the cell, ag
you note that it lacks a nucleus, it has
ra
unusual cell walls, and that is rRNA is distinctly different. To which domain
m
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.
_____________________________________________________________________