Microbes and Society: Chapter 5 Practice Quiz

Please read each question and select your answer from the choices provided. You must complete all of the questions in order to view your results. At the end of each exam, you have the option to e-mail your results to your instructor. (Kris.. do you want me to turn on this option?)

1: Which of the following is not true of protozoa?
	A: lack cell wall
	B: produce no sporebearing structures
	C: comprise the microbial population known as phytoplankton
	D: form active feeding forms called trophozoites

2: Under difficult environmental conditions, protozoa transform into a protective body known as a:
	A: endospore
	B: pellicle
	C: fruiting body
	D: cyst

3: Amoeba are protozoa that move by means of:
	A: cilia
	B: flagella
	C: pseudopodia
	D: amoeba don’t move

4: The endosymbiosis hypothesis provides an explanation for how:
	A: eukaryotes developed from prokayotes
	B: prokaryotes developed from eukaryotes
	C: algae developed from protozoa
	D: protozoa developed from algae

5: Which of the following is a characteristic unique to the ciliates?
	A: use of cilia as a sensory function
	B: presence of both a macronucleus and several micronuclei
	C: possess a light-detecting eye spot
	D: both a and b are unique characteristics of the ciliates

6: Algae are classified into 6 groups, technically known as:
	A: categories
	B: divisions
	C: genera
	D: domains

7: Which of the following best describes the algae known as diatoms?
	A: Cells have intricate shells of silicon dioxide with 2 halves
	B: Cells are encased in rigid walls composed of cellulose coated with silicon
	C: Cells have flagella and a light-detecting eye spot
	D: Cells contain carotenoid pigments as well as chlorophyll A and B

8: The algae Chlamydomonas demonstrates a complex life cycle that switches between haploid and diploid forms. This life cycle is called:
	A: the sexual-asexual exchange
	B: the transposition cycle
	C: an alternation of generations
	D: algal transformation

9: Why are slime molds considered to resemble plants?
	A: They can photosynthesize
	B: They have cell walls composed largely of cellulose.
	C: They form a threadlike structure.
	D: They form structures that resemble leaves

10: Water molds form flagellated spores called:
	A: dinoflagellates
	B: fruiting bodies
	C: zoospores
	D: trichocysts

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