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Microbiology, 5/e

Lansing M Prescott, Augustana College
Donald A Klein, Colorado State University
John P Harley, Eastern Kentucky University

The Protozoa

Multiple Choice Quiz

Choose the best answer

For the next 2 items each item lists two categories, numbered I and II. Select the answers based on their relationships.


1	I. - Chemoorganotrophic heterotrophs II. - Protozoa
		A)	All members of I are also members of II, but not all members of II are members of I.
		B)	All members of II are also members of I, but not all members of I are members of II.
		C)	All members of I are members of II, and all members of II are members of I.
		D)	No member of I is also a member of II.
		E)	Some members of I are members of II and some are not, and some members of II are members of I and some are not.


2	I. - Protozoa II. - Produces oxygen
		A)	All members of I are also members of II, but not all members of II are members of I.
		B)	All members of II are also members of I, but not all members of I are members of II.
		C)	All members of I are members of II, and all members of II are members of I.
		D)	No member of I is also a member of II.
		E)	Some members of I are members of II and some are not, and some members of II are members of I and some are not.


3	I. - Planktonic organisms II. - Protozoa
		A)	All members of I are also members of II, but not all members of II are members of I.
		B)	All members of II are also members of I, but not all members of I are members of II.
		C)	All members of I are members of II, and all members of II are members of I.
		D)	No member of I is also a member of II.
		E)	Some members of I are members of II and some are not, and some members of II are members of I and some are not.


4	I. - Protozoa II. - Ciliate organisms
		A)	All members of I are also members of II, but not all members of II are members of I.
		B)	All members of II are also members of I, but not all members of I are members of II.
		C)	All members of I are members of II, and all members of II are members of I.
		D)	No member of I is also a member of II.
		E)	Some members of I are members of II and some are not, and some members of II are members of I and some are not.


5	I. - Protozoa II. - Parasitic organisms
		A)	All members of I are also members of II, but not all members of II are members of I.
		B)	All members of II are also members of I, but not all members of I are members of II.
		C)	All members of I are members of II, and all members of II are members of I.
		D)	No member of I is also a member of II.
		E)	Some members of I are members of II and some are not, and some members of II are members of I and some are not.

The next questions are standard multiple choice.


6	A protozoan is defined as a usually
		A)	motile procaryotic unicellular protist.
		B)	motile eucaryotic unicellular protist.
		C)	motile eucaryotic unicellular photosynthetic protist.
		D)	motile eucaryotic multicellular protist.
		E)	non motile eucaryotic unicellular protist.


7	Protozoa have several types of vacuoles. Which of the following describes the function of a contractile vacuole?
		A)	Sites of food digestion
		B)	Contain specific enzymes that perform various functions
		C)	Maintain osmotic balance by continuous water expulsion
		D)	Structures that accept male gametes during sexual reproduction
		E)	Sites for photosynthesis


8	Protozoa have several types of vacuoles. Which of the following describes the function of a phagocytic vacuole?
		A)	Sites of food digestion
		B)	Contain specific enzymes that perform various functions
		C)	Maintain osmotic balance by continuous water expulsion
		D)	Structures that accept male gametes during sexual reproduction
		E)	Sites for photosynthesis


9	Protozoa have several types of vacuoles. Which of the following describes the function of a secretory vacuole?
		A)	Sites of food digestion
		B)	Contain specific enzymes that perform various functions
		C)	Maintain osmotic balance by continuous water expulsion
		D)	Structures that accept male gametes during sexual reproduction
		E)	Sites for photosynthesis


10	Holozoic nutrition is characterized by
		A)	phagocytosis of solid nutrients and subsequent formation of phagocytic vacuoles.
		B)	pinocytosis of solid nutrients and subsequent formation of phagocytic vacuoles.
		C)	phagocytosis of soluble nutrients and subsequent formation of phagocytic vacuoles.
		D)	encystment of solid nutrients and subsequent formation of secretory vacuoles.
		E)	Photosynthesis


11	Saprozoic nutrition is characterized by
		A)	phagocytosis of solid nutrients and subsequent formation of phagocytic vacuoles.
		B)	pinocytosis of solid nutrients and subsequent formation of phagocytic vacuoles.
		C)	pinocytosis of soluble nutrients and subsequent formation of phagocytic vacuoles.
		D)	encystment of solid nutrients and subsequent formation of secretory vacuoles.
		E)	Photosynthesis


12	Which of the following is not a function of cysts for Protozoa?
		A)	Protect against adverse environments.
		B)	Sites for nuclear reorganization and cell division.
		C)	Serve as a means of transfer between hosts in parasitic species.
		D)	All of the above may be a function of cysts for Protozoa.
		E)	None of the above may be a function of cysts for Protozoa.


13	Members of the Protozoa may motile by all of the following methods except
		A)	pseudopodia.
		B)	flagella.
		C)	gliding by slime secretion.
		D)	cilia.


14	The most common method of asexual reproduction in the Protozoa is by
		A)	conjugation
		B)	gametangial contact
		C)	conidiospore production
		D)	binary fission
		E)	binary fusion


15	The most common method of sexual reproduction in the Protozoa is by
		A)	conjugation
		B)	gametangial contact
		C)	conidiospore production
		D)	binary fission
		E)	binary fusion


16	At the time where two cells contact and their pellicles fuse, the macro nuclei are degraded. The micronuclei divide by meiosis but only one haploid nucleus from each micronucleus survives and ultimately divides by mitosis, one nucleus being stationary and the other migratory. The cells exchange migratory nuclei which fuse, undergo mitosis three times. Four of the resulting nuclei fuse to become a macronucleus and one of the remaining 4 remains viable as a micronucleus. The cells separate. This description characterizes
		A)	encystation.
		B)	schizogony.
		C)	binary fission.
		D)	excystation.
		E)	conjugation.


17	Organisms with amoeboid cells that move within a network of mucous tracks using a typical gliding motion belong to which phylum of Protozoa?
		A)	Sarcomastigophora.
		B)	Labyinthomorpha
		C)	Apicomplexa
		D)	Myxozoa
		E)	Ciliophora


18	Organisms which have spore-forming stage in their life cycle and lack special locomotory organelles belong to which phylum of Protozoa?
		A)	Sarcomastigophora.
		B)	Labyinthomorpha
		C)	Apicomplexa
		D)	Myxozoa
		E)	Ciliophora


19	Organisms are parasitic and have a resistant spore with one to six coiled polar filaments belong to which phylum of Protozoa?
		A)	Sarcomastigophora.
		B)	Labyinthomorpha
		C)	Apicomplexa
		D)	Myxozoa
		E)	Ciliophora


20	Members of which phylum of Protozoa are being studied as biological control agents for certain insects because they parasitize insects?
		A)	Sarcomastigophora.
		B)	Microspora
		C)	Apicomplexa
		D)	Myxozoa
		E)	Ciliophora

For the next set of questions compare the entities I and II.


21	Number of motility structures on I. - flagellated cells II. - ciliated cells
		A)	I is greater than II, answer a.
		B)	II is greater than I, answer b.
		C)	I is exactly or approximately equal to II, answer c.
		D)	I may stand in more than one of the above relations to II, answer d.


22	The numbers of nuclear divisions involved in a ciliate undergoing I. - binary fission. II. - conjugation
		A)	I is greater than II, answer a.
		B)	II is greater than I, answer b.
		C)	I is exactly or approximately equal to II, answer c.
		D)	I may stand in more than one of the above relations to II, answer d.


23	The length of I. - flagella in flagellates II. - cilia in ciliates
		A)	I is greater than II, answer a.
		B)	II is greater than I, answer b.
		C)	I is exactly or approximately equal to II, answer c.
		D)	I may stand in more than one of the above relations to II, answer d.


24	The importance of Protozoa as I. - planktonic organisms in aquatic food webs. II. - causes of human and animal diseases
		A)	I is greater than II, answer a.
		B)	II is greater than I, answer b.
		C)	I is exactly or approximately equal to II, answer c.
		D)	I may stand in more than one of the above relations to II, answer d.

The next question is a standard multiple choice questions


25	Organisms with complex life cycles which include a mammalian host and an insect host and involves schizogony as part of the cycle belong to which phylum of Protozoa?
		A)	Sarcomastigophora.
		B)	Labyinthomorpha
		C)	Apicomplexa
		D)	Myxozoa
		E)	Ciliophora

For the next set of questions compare the validity of the two statments.


26	In protozoa that have macro and micronuclei the I. - macronucleus is diploid and involved in both genetic recombination and regeneration of micronuclei. II. - micronuclei are associated with trophic activities and regeneration processes
		A)	I only is true.
		B)	II only is true.
		C)	Both I and II are true.
		D)	Neither I nor II are true.


27	Protozoa lack cell walls but possess a pellicle. The : I. outer part of the pellicle is the ectoplasm that is semisolid giving some rigidity to the cell body. II. - inner part of the pellicle is the endoplasm which is more fluid and granular in composition and contains the cell organelles.
		A)	I only is true.
		B)	II only is true.
		C)	Both I and II are true.
		D)	Neither I nor II are true.


28	Most anaerobic protozoa: I. - have no mitochondria. II. - can form hydrogen gas.
		A)	I only is true.
		B)	II only is true.
		C)	Both I and II are true.
		D)	Neither I nor II are true.


29	Sarcomastigophora include I. - Zooflagellates. II. - Amoeboid cells.
		A)	I only is true.
		B)	II only is true.
		C)	Both I and II are true.
		D)	Neither I nor II are true.


30	Ciliates I. are unable to capture many particles of food in a short time so feed primarily by absorbing nutrients directly through the pellicle. II. - use the cytoproct to dump waste materials to the outside of the cell.
		A)	I only is true.
		B)	II only is true.
		C)	Both I and II are true.
		D)	Neither I nor II are true.

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