Which pair of protists has support structures composed of silica?
a. Dinoflagellates and diatoms
b. Diatoms and radiolarians
c. Radiolarians and forams
d. Forams and amoebozoans
Taylor, Simon, Dickey, Hogan 10th Edition
Ch. 16 Microbial Life: Prokaryotes and Protists
Problem 8
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Which pair of protists has support structures composed of silica?
a. Dinoflagellates and diatoms
b. Diatoms and radiolarians
c. Radiolarians and forams
d. Forams and amoebozoans
Which of the following members of the SAR supergroup is incorrectly paired with its clade?
a. Stramenopiles—brown algae
b. Alveolates—parasites such as Plasmodium
c. Alveolates—dinoflagellates
d. Rhizaria—diatoms
Which of the following prokaryotes is not pathogenic?
a. Chlamydia
b. Rhizobium
c. Streptococcus
d. Salmonella
What characteristic distinguishes true multicellularity from colonies of cells?
Chlamydomonas is a unicellular green alga. How does it differ from a photosynthetic bacterium, which is also single-celled? How does it differ from a protozoan, such as an amoeba? How does it differ from larger green algae, such as sea lettuce (Ulva)?
The bacteria that cause tetanus can be killed only by prolonged heating at temperatures considerably above boiling. This suggests that tetanus bacteria
a. Have cell walls containing peptidoglycan.
b. Secrete endotoxins.
c. Are autotrophic.
d. Produce endospores.