Question 1

Cilia or flagella are resorbed and the Golgi apparatus secretes wall material during

Accepted Answer

A)   formation of a contractile vacuole.
B)   intermediary meiosis.
C)   conjugation.
D)   pseudopod streaming.
E)   encystment.F) C) and D)
G) None of the above

Question 2

Usually we expect fission to produce two cells from one,but in Sporozoea and some Sarcodina,multiple fission of the nucleus is followed by rapid division of cytoplasm,releasing many new individuals immediately in a process called what?

Accepted Answer

A)   amitosis
B)   budding
C)   syngamy
D)   autogamy
E)   sporogonyF) B) and D)
G) B) and C)

Question 3

Ectoplasm

Accepted Answer

A)   provides the vital force of life.
B)   is cytoplasm that is outside the cell membrane of protozoans.
C)   is only found in parasitic amebas.
D)   is only found in spores of parasitic protozoans.
E)   contrasts with endoplasm; both ectoplasm and endoplasm are cytoplasmic components.F) A) and D)
G) A) and C)

Question 4

Protist reproduction

Accepted Answer

A)   is always asexual and usually binary fission.
B)   is always sexual with the adults being haploid.
C)   is always sexual with the adults being diploid.
D)   is always sexual with alternation of haploid and diploid generations.
E)   may be asexual or any of the above sexual cycles.F) A) and E)
G) C) and D)

Question 5

What is found at the base of every flagellum or cilium?

Accepted Answer

A)   a kinetosome
B)   a kinetid
C)   an axopod
D)   a kinetoplast
E)   a lobopodF) A) and B)
G) A) and C)

Question 6

Nutrition in unicellular eukaryotes is best described as

Accepted Answer

A)   autotrophic.
B)   heterotrophic.
C)   saprozoic.
D)   All of the choices are correct.
E)   None of the choices are correct.F) All of the above
G) D) and E)

Question 7

Which describes the mode of action of the causative agent of amebic dysentery?

Accepted Answer

A)   It invades the liver and destroys its function, thus altering the digestive system.
B)   It ruptures large numbers of red blood cells and the increased fluids are lost across the intestine.
C)   It invades the intestinal lining and secretes enzymes that cause loss of fluid; it can also cause abscesses on the liver and other organs.
D)   It invades the brain and destroys the control center that regulates intestinal movement of food.
E)   All of the choices are correct.F) D) and E)
G) B) and D)

Question 8

Foraminiferans are protozoans that form complex,many-chambered tests composed of _____________.

Accepted Answer

The answer of Foraminiferans are protozoans that form complex,many-chambered tests...

Question 9

Which of the following represents the arrangement of microtubules in axonemes of cilia?

Accepted Answer

A)   nine peripheral triplets of microtubules
B)   nine peripheral pairs of microtubules plus one central pair
C)   nine peripheral triplets of microtubules plus one central pair
D)   nine peripheral pairs of microtubules plus two central pairs
E)   three peripheral pairs of microtubules and no central pairsF) All of the above
G) A) and D)

Question 10

Small spined extrusomes in ciliate protozoa that are discharged apparently to aid in the capture of prey or to serve as a defensive mechanism are called ______________.

Accepted Answer

The answer of Small spined extrusomes in ciliate protozoa that...

Question 11

Gametic nuclei arising by meiosis and forming a zygote within the same organism that produced them is a process called ___________.

Accepted Answer

The answer of Gametic nuclei arising by meiosis and forming...

Question 12

The Clade (Superphylum)Alveolata contains three phyla: Apicomplexa,Ciliophora,and Dinoflagellata.What are their shared characteristics and why are they placed in this superphylum?

Accepted Answer

The three phyla within the Clade (Superp...

Question 13

The strange case of organisms that undergo meiosis after fertilization and live out their adult life in the haploid state is a case of what?

Accepted Answer

A)   syngamy
B)   zygotic meiosis
C)   gametic meiosis
D)   autogamy
E)   conjugationF) B) and C)
G) A) and B)

Question 14

Which is an example of a Ciliophoran protozoa?

Accepted Answer

A)   Amoeba
B)   Trypanosoma
C)   Paramecium
D)   Plasmodium
E)   GiardiaF) A) and C)
G) None of the above

Question 15

"Red tides" are caused by massive blooms of

Accepted Answer

A)   sporozoans.
B)   dinoflagellates.
C)   Euglena.
D)   ciliates.
E)   Plasmodia.F) A) and E)
G) D) and E)

Question 16

The most correct usage of the term "protozoa" is as a(n)

Accepted Answer

A)   phylum.
B)   class.
C)   separate kingdom.
D)   synonym for Protista.
E)   informal cluster of groups with complicated and uncertain phyletic relationships.F) B) and E)
G) All of the above

Question 17

Perhaps half of the U.S.population is infected with this organism that normally resides in tissue cysts containing bradyozoites; embryos of pregnant women are also at risk.

Accepted Answer

A)   Amoeba proteus
B)   Plasmodium vivax
C)   Toxoplasma gondii
D)   Trypanosoma cruzi
E)   Entamoeba histolyticaF) B) and D)
G) A) and B)

Question 18

After phagocytosis,a food particle is held in a food vacuole also called a/an _____________________.

Accepted Answer

The answer of After phagocytosis,a food particle is held in...

Question 19

The protozoan group that contains only endoparasitic forms is the ____________________.

Accepted Answer

The answer of The protozoan group that contains only endoparasitic...

Question 20

What is the specific structure in ciliates that serves as the site of expulsion for wastes called?

Accepted Answer

A)   phagosome
B)   lysosome
C)   cytostome
D)   cytoproct
E)   paramylon bodyF) A) and E)
G) None of the above

Exam 11: Unicellular Eukaryotes

Perhaps half of the U.S.population is infected with this organism that normally resides in tissue cysts containing bradyozoites; embryos of pregnant women are also at risk.

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Cilia or flagella are resorbed and the Golgi apparatus secretes wall material during

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The most correct usage of the term "protozoa" is as a(n)

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Which describes the mode of action of the causative agent of amebic dysentery?

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The protozoan group that contains only endoparasitic forms is the ____________________.

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After phagocytosis,a food particle is held in a food vacuole also called a/an _____________________.

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Which is an example of a Ciliophoran protozoa?

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Ectoplasm

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Gametic nuclei arising by meiosis and forming a zygote within the same organism that produced them is a process called ___________.

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Which of the following represents the arrangement of microtubules in axonemes of cilia?

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The Clade (Superphylum)Alveolata contains three phyla: Apicomplexa,Ciliophora,and Dinoflagellata.What are their shared characteristics and why are they placed in this superphylum?

Correct AnswerAnswered by ExamLex AIThe three phyla within the Clade (Superp...View AnswerShow Answer

What is found at the base of every flagellum or cilium?

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Usually we expect fission to produce two cells from one,but in Sporozoea and some Sarcodina,multiple fission of the nucleus is followed by rapid division of cytoplasm,releasing many new individuals immediately in a process called what?

Correct AnswerverifiedShow Answer

The strange case of organisms that undergo meiosis after fertilization and live out their adult life in the haploid state is a case of what?

Correct AnswerverifiedShow Answer

Small spined extrusomes in ciliate protozoa that are discharged apparently to aid in the capture of prey or to serve as a defensive mechanism are called ______________.

Correct AnswerverifiedShow Answer

Nutrition in unicellular eukaryotes is best described as

Correct AnswerverifiedShow Answer

Protist reproduction

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What is the specific structure in ciliates that serves as the site of expulsion for wastes called?

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"Red tides" are caused by massive blooms of

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Foraminiferans are protozoans that form complex,many-chambered tests composed of _____________.

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Answered by ExamLex AI
The three phyla within the Clade (Superp...
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