Question 1

Red tides are caused mostly by:

Accepted Answer

A)  Diatoms.
B)  Foraminiferans.
C)  Dinoflagellates.
D)  Red seaweeds.
E)  Radiolarians. C

Question 2

Which of the following would be classified as autotrophic?

Accepted Answer

A)  Cyanobacteria.
B)  Lysogenic viruses.
C)  Bacteriophages.
D)  All answers are correct.
E)  Lysogenic viruses and Bacteriophages only.

Question 3

What is the purpose of the spines seen on the frustules of diatoms?

Accepted Answer

A)  Floatation
B)  Hunting
C)  Photosynthesis
D)  Reproduction
E)  Restore normal size

Question 4

A survival advantage of __________________ is the ability to withstand exposure to air for long periods of time during tidal cycles.

Accepted Answer

A)  Diatoms
B)  Dinoflagellates
C)  Radiolarians
D)  Foraminiferans
E)  Lichens

Question 5

Archaea are classified as being:

Accepted Answer

A)  Prokaryotic.
B)  Autotrophs only.
C)  Heterotrophs only.
D)  Consisting of nucleic acids and a protein coat.
E)  Eukaryotic.

Question 6

What feature do all protozoa share?

Accepted Answer

A)  Reproductive strategies
B)  Habitats
C)  Feeding strategy
D)  Structure
E)  Being unicellular

Question 7

Zooxanthellae,which live symbiotically with many species,are classified as:

Accepted Answer

A)  Diatoms.
B)  Dinoflagellates.
C)  Radiolarians.
D)  Foraminiferans.
E)  Lichens

Question 8

Bacteriophages are types of:

Accepted Answer

A)  Archea.
B)  Bacteria.
C)  Protozoa.
D)  Algae.
E)  Viruses.

Question 9

Marine fungi:

Accepted Answer

A)  Are mostly photosynthetic.
B)  Are parts of lichens that live on rocky shores.
C)  Secrete calcareous skeletons.
D)  Produce red tides.
E)  None of the choices are correct: there are no marine fungi. B

Question 10

Dinoflagellates that live in association with reef-building corals and other animals are known as:

Accepted Answer

A)  Zooxanthellae.
B)  Zooplankton.
C)  Silicoflagellates.
D)  Bioluminescent dinoflagellates.
E)  Cryptomonads.

Question 11

Bacteria that make their own organic compounds by obtaining energy from chemical compounds and not directly from light are known as:

Accepted Answer

A)  Heterotrophic.
B)  Decay.
C)  Photosynthetic.
D)  Protists.
E)  Chemosynthetic.

Question 12

Prokaryotes differ from eukaryotes in regards to:

Accepted Answer

A)  Shape of DNA molecules.
B)  Size of ribosomes.
C)  Presence of nucleus.
D)  All answers are correct.
E)  Shape of DNA molecules and Size of ribosomes only.

Question 13

Archaea are now being detected in many environments by identifying one of the following chemicals characteristic of the group:

Accepted Answer

A)  Pigments.
B)  Chlorophyll.
C)  Nucleic acids.
D)  Proteins.
E)  Carbohydrates.

Question 14

Organisms having a shell made of silica (SiO2) :

Accepted Answer

A)  Foraminiferans.
B)  Stromatolites.
C)  Cyanobacteria.
D)  Diatoms.
E)  Ciliates.

Question 15

Radiolarians are characterized by:

Accepted Answer

A)  Being mostly planktonic.
B)  Having a calcareous skeleton.
C)  Being autotrophs.
D)  Having two flagella.
E)  Causing red tides.

Question 16

Which of the following are not protozoans?

Accepted Answer

A)  Radiolarians
B)  Foraminiferans
C)  Dinoflagellates
D)  Ciliates
E)  Unicellular,planktonic organisms whose sediments form huge limestone deposits on land C

Question 17

Which of the following can be dangerous to human health?

Accepted Answer

A)  Diatoms
B)  Dinoflagellates
C)  Radiolarians
D)  All answers are correct
E)  Diatoms and Dinoflagellates only

Question 18

Generally the dominant group of planktonic primary producers in cold water:

Accepted Answer

A)  Foraminiferans.
B)  Silicoflagellates.
C)  Dinoflagellates.
D)  Photosynthetic bacteria.
E)  Diatoms.

Question 19

Some planktoic cyanobacteria have the ability to "fix" which of the following elements thus having a fertilizing effect on the marine environment similar to the ability of the land plants legumes?

Accepted Answer

A)  Oxygen
B)  Helium
C)  Hydrogen
D)  Nitrogen

Question 20

One of the following statements about marine viruses is not true:

Accepted Answer

A)  Are involved in the release of DOM (dissolved organic matter) into the water.
B)  Bridge the gap between the non-living and the living.
C)  Their genetic material is in the form of DNA or RNA.
D)  Cause diseases in many types of organisms.
E)  Consist of minute cells sometimes attached into chains.

Exam 5: The Microbial World

Red tides are caused mostly by:

Correct AnswerverifiedC

Which of the following would be classified as autotrophic?

Correct AnswerverifiedShow Answer

What is the purpose of the spines seen on the frustules of diatoms?

Correct AnswerverifiedShow Answer

A survival advantage of __________________ is the ability to withstand exposure to air for long periods of time during tidal cycles.

Correct AnswerverifiedShow Answer

Archaea are classified as being:

Correct AnswerverifiedShow Answer

What feature do all protozoa share?

Correct AnswerverifiedShow Answer

Zooxanthellae,which live symbiotically with many species,are classified as:

Correct AnswerverifiedShow Answer

Bacteriophages are types of:

Correct AnswerverifiedShow Answer

Marine fungi:

Correct AnswerverifiedB

Dinoflagellates that live in association with reef-building corals and other animals are known as:

Correct AnswerverifiedShow Answer

Bacteria that make their own organic compounds by obtaining energy from chemical compounds and not directly from light are known as:

Correct AnswerverifiedShow Answer

Prokaryotes differ from eukaryotes in regards to:

Correct AnswerverifiedShow Answer

Archaea are now being detected in many environments by identifying one of the following chemicals characteristic of the group:

Correct AnswerverifiedShow Answer

Organisms having a shell made of silica (SiO2) :

Correct AnswerverifiedShow Answer

Radiolarians are characterized by:

Correct AnswerverifiedShow Answer

Which of the following are not protozoans?

Correct AnswerverifiedC

Which of the following can be dangerous to human health?

Correct AnswerverifiedShow Answer

Generally the dominant group of planktonic primary producers in cold water:

Correct AnswerverifiedShow Answer

Some planktoic cyanobacteria have the ability to "fix" which of the following elements thus having a fertilizing effect on the marine environment similar to the ability of the land plants legumes?

Correct AnswerverifiedShow Answer

One of the following statements about marine viruses is not true:

Correct AnswerverifiedShow Answer

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C

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B

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Organisms having a shell made of silica (SiO₂) :

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C

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