Chapter 13

Stanley Miller’s experiment demonstrated __________. a. the great age of Earth b. that amino acids can assemble under some conditions c. that oxygen is necessary for life d. all of the above

The evolution of __________ resulted in an increase in the amount of oxygen in the atmosphere. a. prokaryotic fission b. sexual reproduction c. aerobic respiration d. photosynthesis

Mitochondria are most likely descendants of __________. a. archaeans b. aerobic bacteria c. cyanobacteria d. anaerobic bacteria

Bacteria transfer genes to a partner cell by __________. a. prokaryotic fission b. the lytic pathway c. conjugation d. endospore formation

The first eukaryotes were __________. a. bacteria b. protists C. fungi c. fungi d animals

True or false? Some protists are more related to plants than to other protists.

Freshwater protists have a __________ that expels excess water.

The __________ are parasitic eukaryotes that live in other cells. a. Viruses b. apicomplexans c. euglenoids d. slime molds e. both a and b f. all are correct

Remains of __________ form chalk and limestone deposits. a. ciliates c. foraminifera b. diatoms d. dinoflagellates

Some of the __________ are human pathogens. a. slime molds b. archaea c. flagellated protozoans d. both a and \(c\)

Green algae are most closely related to __________ algae.

Silica-rich remains of __________ are used as an insecticide. a. dinoflagellates b. diatoms c. foraminiferans d. apicomplexans

The genetic material of a __________ may be DNA or RNA. a. bacteria b. ciliate c. dinoflagellate d. virus

Match these terms with the appropriate definition. __________green algae __________Virus __________bacteria __________brown algae __________endospore __________euglenoid __________algal bloom __________dinoflagellate __________slime mold __________stromatolite a. protist population explosion b. social amoeba c. most diverse prokaryotes d. noncellular infectious agent e. include the largest protists f. flagellate with chloroplasts g. closest relative of plants h. layered prokaryotes and sediment i. resistant resting stage j. whirling cell