30 Jun BACTERIA AND PROTISTA LAB
Bacteria (Prokaryotes)
1. What are some characteristics of prokaryotes? How do they reproduce?
2. What two domains comprise the prokaryotes? What differentiates these two domains?
3. Bacteria can be differentiated based on several characteristics. Consider the following
categories:
a. Stains What causes the different staining patterns? What is the difference
between gram
+
and gram
–
bacteria? How might this influence the effectiveness of
certain antibiotics?
b. Shapes Identify the three basic shapes of bacteria. For each type: describe the
shape, and name a species that exhibits that shape.
c. Colony morphologies List some different types of colony morphologies
d. Metabolic activities Different sources of energy? Different environments?
4. List and describe four ways that bacteria are important to humans (and other animals)?
5. How do cyanobacteria obtain energy from the environment? What structures are used in
this process?
6. Observe Gloeocapsa. List some characteristics.
7. Observe Oscillatoria. List characteristics. How are new colonies formed? What are
hormogonia and necridia?
Protista (Eukaryotes)
8. What are some characteristics of eukaryotes? How do they reproduce?
Photosynthetic Protists
9. Observe the Chlamydomonas slides and the Volvox specimens, two types of unicellular
green algae. Make drawings of what you see. Label the flagella on the Chlamydomonas.
Volvox is colonial on your drawing, label the daughter colonies of Volvox found within
the parental colonies.
Heterotrophic Protists
10. What term is used to describe animal-like unicellular protists that ingest food? Where
do they store and digest their food?
11. Describe three types of structures used for protozoan locomotion.
a.
b.
c.
12. Observe the slides and specimens of Amoeba proteus. What structures are used for
locomotion? What is phagocytosis?
13. Observe the specimens of Paramecium bursaria. What structures are used for
locomotion?
14. Name a heterotrophic protist that uses a flagellum for movement.
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