Question 1

Certain euglenoids aruniquamong thprotists in that they

Accepted Answer

A) possess flagella. 
B) reproduce by longitudinal fission. 
C) can be heterotrophic and autotrophic. 
D) are muticellular. 
E) contain DNA. 
A) possess flagella. 
B) reproduce by longitudinal fission. 
C) can be heterotrophic and autotrophic. 
D) are muticellular. 
E) contain DNA. C

Question 2

Which of thfollowing protists arablto producbioluminescent molecules?

Accepted Answer

A) foraminiferans 
B) apicomplexans 
C) ciliates 
D) dinoflagellates 
E) euglenoids 
A) foraminiferans 
B) apicomplexans 
C) ciliates 
D) dinoflagellates 
E) euglenoids D

Question 3

Which of thfollowing statements is (are) correct about prokaryotic reproduction?

Accepted Answer

A) Prokaryotic cells may reproduce asexually. 
B) Prokaryotic cells may divide by fission. 
C) Prokaryotic cells may reproduce by budding. 
D) Prokaryotic cells may reproduce sexually. 
E) All of these except "prokaryotic cells may reproduce sexually," are correct. 
A) Prokaryotic cells may reproduce asexually. 
B) Prokaryotic cells may divide by fission. 
C) Prokaryotic cells may reproduce by budding. 
D) Prokaryotic cells may reproduce sexually. 
E) All of these except "prokaryotic cells may reproduce sexually," are correct. E

Question 4

Prokaryotic cells arlikely to bfound

Accepted Answer

A) in and on our bodies, in our food and water. 
B) in glacial ice that never thaws. 
C) in acidic springs. 
D) in hydrothermal vents. 
E) in all of these. 
A) in and on our bodies, in our food and water. 
B) in glacial ice that never thaws. 
C) in acidic springs. 
D) in hydrothermal vents. 
E) in all of these.

Question 5

Realgae

Accepted Answer

A) are primarily marine organisms. 
B) are thought to have developed from green algae. 
C) contain xanthophylls as their main accessory pigments. 
D) are actually brown. 
E) are all of these. 
A) are primarily marine organisms. 
B) are thought to have developed from green algae. 
C) contain xanthophylls as their main accessory pigments. 
D) are actually brown. 
E) are all of these.

Question 6

A protist cell may contain

Accepted Answer

A) a nucleus. 
B) a cytoskeleton. 
C) more than one chromosome. 
D) Golgi bodies. 
E) all of these. 
A) a nucleus. 
B) a cytoskeleton. 
C) more than one chromosome. 
D) Golgi bodies. 
E) all of these.

Question 7

Which of thfollowing elements may havbeen precursors of modern cells?

Accepted Answer

A) anaerobic bacteria 
B) prokaryotic cells 
C) pseudocells 
D) archaea 
E) protocells 
A) anaerobic bacteria 
B) prokaryotic cells 
C) pseudocells 
D) archaea 
E) protocells

Question 8

Algins, compounds usein thfooindustry, arobtainefrom

Accepted Answer

A) foraminiferans. 
B) brown algae. 
C) dinoflagellates. 
D) red algae. 
E) green algae. 
A) foraminiferans. 
B) brown algae. 
C) dinoflagellates. 
D) red algae. 
E) green algae.

Question 9

Which of thfollowing organisms arvectors of malaria?

Accepted Answer

A) butterflies 
B) mosquitoes 
C) flies 
D) wasps 
E) Plasmodium 
A) butterflies 
B) mosquitoes 
C) flies 
D) wasps 
E) Plasmodium

Question 10

Which of thfollowing forms of Plasmodiuinfects thhuman?

Accepted Answer

A) merozoites 
B) gametocytes 
C) cysts 
D) sporozoites 
E) spores 
A) merozoites 
B) gametocytes 
C) cysts 
D) sporozoites 
E) spores

Question 11

Thfirst eukaryotic cells may havbeen

Accepted Answer

A) bacteria. 
B) archaea. 
C) protists. 
D) algae. 
E) fungi. 
A) bacteria. 
B) archaea. 
C) protists. 
D) algae. 
E) fungi.

Question 12

Which of thfollowing viral molecules is crucial for a successful multiplication in thhost?

Accepted Answer

A) reverse transcriptase 
B) RNA polymerase 
C) DNA polymerase 
D) RNA primase 
E) DNA ligase 
A) reverse transcriptase 
B) RNA polymerase 
C) DNA polymerase 
D) RNA primase 
E) DNA ligase

Question 13

Clay compounds werthought to boriginal sites for thformation of

Accepted Answer

A) amino acids. 
B) sugars. 
C) polysaccharides. 
D) protein chains. 
E) lipid molecules. 
A) amino acids. 
B) sugars. 
C) polysaccharides. 
D) protein chains. 
E) lipid molecules.

Question 14

Which of thfollowing does NOT belong to thprotists?

Accepted Answer

A) bacteria 
B) protozoans 
C) radiolarians 
D) dinoflagellates 
E) euglenoids 
A) bacteria 
B) protozoans 
C) radiolarians 
D) dinoflagellates 
E) euglenoids

Question 15

Which of thfollowing statements may apply to early cells?

Accepted Answer

A) They were prokaryotic cells. 
B) It is likely that early cells did not have a nucleus but had membrane-bound organelles. 
C) Early cells may have used oxygen gas in order to thrive successfully. 
D) Energy from the sun may have been used by early cells. 
E) All of these statements apply. 
A) They were prokaryotic cells. 
B) It is likely that early cells did not have a nucleus but had membrane-bound organelles. 
C) Early cells may have used oxygen gas in order to thrive successfully. 
D) Energy from the sun may have been used by early cells. 
E) All of these statements apply.

Question 16

A coccus

Accepted Answer

A) is a rod-shaped bacterium. 
B) is a spherical bacterium. 
C) is a bacterium with an intermediate shape (between spherical and rod-shaped) 
D) is a spiral-shaped bacterium. 
E) is a polymorph bacterium. 
A) is a rod-shaped bacterium. 
B) is a spherical bacterium. 
C) is a bacterium with an intermediate shape (between spherical and rod-shaped) 
D) is a spiral-shaped bacterium. 
E) is a polymorph bacterium.

Question 17

During thArchaea era, divergencof prokaryotes leto all but which of thfollowing?

Accepted Answer

A) archaebacteria 
B) eukaryotes 
C) multicelled organisms 
D) eubacteria 
E) additional prokaryotes 
A) archaebacteria 
B) eukaryotes 
C) multicelled organisms 
D) eubacteria 
E) additional prokaryotes

Question 18

Thfirst organisms

Accepted Answer

A) absorbed their food supplies from the organic molecules that surrounded them. 
B) were eukaryotes. 
C) utilized fermentation for energy production. 
D) utilized ATP. 
E) did all of these except they were NOT eukaryotes. 
A) absorbed their food supplies from the organic molecules that surrounded them. 
B) were eukaryotes. 
C) utilized fermentation for energy production. 
D) utilized ATP. 
E) did all of these except they were NOT eukaryotes.

Question 19

Which of thfollowing scientists suggestethat RNA may havbeen thfirst informational molecule?

Accepted Answer

A) Crick and Orgel 
B) Crick and Watson 
C) Crick and Francis 
D) Watson and Euclid 
E) Orgel and Euclid 
A) Crick and Orgel 
B) Crick and Watson 
C) Crick and Francis 
D) Watson and Euclid 
E) Orgel and Euclid

Question 20

Thlysogenic pathway is characterizeby

Accepted Answer

A) extensive transcription of viral DNA. 
B) passive replication of viral DNA. 
C) destruction of the bacterial host. 
D) extensive transcription of viral DNA and passive replication of viral DNA. 
E) extensive transcription of viral DNA, passive replication of viral DNA, and destruction of the bacterial host. 
A) extensive transcription of viral DNA. 
B) passive replication of viral DNA. 
C) destruction of the bacterial host. 
D) extensive transcription of viral DNA and passive replication of viral DNA. 
E) extensive transcription of viral DNA, passive replication of viral DNA, and destruction of the bacterial host.

Exam 13: Early Life Forms and the Viruses

Certain euglenoids aruniquamong thprotists in that they

Which of thfollowing protists arablto producbioluminescent molecules?

Which of thfollowing statements is (are) correct about prokaryotic reproduction?

Prokaryotic cells arlikely to bfound

Realgae

A protist cell may contain

Which of thfollowing elements may havbeen precursors of modern cells?

Algins, compounds usein thfooindustry, arobtainefrom

Which of thfollowing organisms arvectors of malaria?

Which of thfollowing forms of Plasmodiuinfects thhuman?

Thfirst eukaryotic cells may havbeen

Which of thfollowing viral molecules is crucial for a successful multiplication in thhost?

Clay compounds werthought to boriginal sites for thformation of

Which of thfollowing does NOT belong to thprotists?

Which of thfollowing statements may apply to early cells?

A coccus

During thArchaea era, divergencof prokaryotes leto all but which of thfollowing?

Thfirst organisms

Which of thfollowing scientists suggestethat RNA may havbeen thfirst informational molecule?

Thlysogenic pathway is characterizeby

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Capturing and Releasing Energy

Dna Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Plants and Fungi

Animal Evolutionunit

Population Ecology

Communities and Ecosystems

The Biosphere and Human Eff Ects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

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