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Biology Today and Tomorrow Without Physiology

Cecie Starr, Christine A. Evers, Lisa Starr

Chapter 13

Early Life Forms and the Viruses - all with Video Answers

Educators

Chapter Questions

00:33

Problem 1

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

Joanna Quigley
Joanna Quigley
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00:55

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

Joanna Quigley
Joanna Quigley
Numerade Educator
00:32

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

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Joanna Quigley
Numerade Educator
00:28

Problem 4

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

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Joanna Quigley
Numerade Educator
00:44

Problem 5

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

Joanna Quigley
Joanna Quigley
Numerade Educator
00:40

Problem 6

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

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Joanna Quigley
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02:02

Problem 7

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

Omar Gonzalez
Omar Gonzalez
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00:32

Problem 8

Freshwater protists have a __________ that expels excess water.

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Joanna Quigley
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00:51

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

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Joanna Quigley
Numerade Educator
00:50

Problem 10

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

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Joanna Quigley
Numerade Educator
00:28

Problem 11

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

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Joanna Quigley
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01:20

Problem 12

Green algae are most closely related to __________ algae.

Omar Gonzalez
Omar Gonzalez
Numerade Educator
00:47

Problem 13

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

Joanna Quigley
Joanna Quigley
Numerade Educator
00:44

Problem 14

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

Joanna Quigley
Joanna Quigley
Numerade Educator
02:38

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

Joanna Quigley
Joanna Quigley
Numerade Educator