Chapter 13

Biology Today and Tomorrow with Physiology · 13 exercises

Problem 1

An abundance of________ in the atmosphere would have prevented the assembly of complex organic compounds.

4 step solution

Problem 2

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

5 step solution

Problem 3

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

3 step solution

Problem 4

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

4 step solution

Problem 5

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

6 step solution

Problem 6

The first eukaryotes were________ . a. bacteria b. protists c. fungi d. animals

4 step solution

Problem 7

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

4 step solution

Problem 9

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

6 step solution

Problem 10

Remains of________ form chalk and limestone deposits. a. ciliates b. diatoms c. foraminiferans d. dinoflagellates

5 step solution

Problem 11

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

3 step solution

Problem 13

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

4 step solution

Problem 14

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

6 step solution

Problem 15

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

2 step solution

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