Question 1

Amebic dysentery is caused by the protozoan species with the scientific name __________ ___________.

Accepted Answer

Entameoba

Question 2

Which organelle was once an independent aerobic prokaryote engulfed by an anaerobic prokaryote?

Accepted Answer

A)  nucleus 
B)  mitochondrion 
C)  plastid 
D)  ribosome 
E)  endoplasmic reticulum 
A)  nucleus 
B)  mitochondrion 
C)  plastid 
D)  ribosome 
E)  endoplasmic reticulum

Question 3

Protective cysts are triggered by what?

Accepted Answer

A)  food shortages 
B)  drying out 
C)  decreased oxygen 
D)  merely being the next stage in a regular life cycle 
E)  all of the choices are correct 
A)  food shortages 
B)  drying out 
C)  decreased oxygen 
D)  merely being the next stage in a regular life cycle 
E)  all of the choices are correct

Question 4

Chagas disease in the Americas is carried by

Accepted Answer

A)  mosquitoes. 
B)  contaminated water supplies. 
C)  contact with cats and cat feces. 
D)  triatomine "kissing" bugs. 
E)  sexual contact. 
A)  mosquitoes. 
B)  contaminated water supplies. 
C)  contact with cats and cat feces. 
D)  triatomine "kissing" bugs. 
E)  sexual contact.

Question 5

Which protozoan group has a complicated parasitic life cycle that nearly always involves the production of infective spores?

Accepted Answer

A)  Apicomplexans 
B)  Zooflagellates 
C)  Sarcodines 
D)  Rhizopods 
E)  Ciliates 
A)  Apicomplexans 
B)  Zooflagellates 
C)  Sarcodines 
D)  Rhizopods 
E)  Ciliates

Question 6

Giardia lamblia causes

Accepted Answer

A)  malaria in both humans and birds; is carried by mosquitoes. 
B)  dysentery and intestinal ailments; is found in contaminated water. 
C)  African sleeping sickness; is carried by the tsetse fly. 
D)  birth defects; is caused by mosquitos. 
E)  Toxoplasmosis; contracted from cats. 
A)  malaria in both humans and birds; is carried by mosquitoes. 
B)  dysentery and intestinal ailments; is found in contaminated water. 
C)  African sleeping sickness; is carried by the tsetse fly. 
D)  birth defects; is caused by mosquitos. 
E)  Toxoplasmosis; contracted from cats.

Question 7

The chills and fever of malaria are correlated with

Accepted Answer

A)  cycles of schizogony in the liver cells. 
B)  release of sporozoites from the oocysts. 
C)  escape of populations of merozoites from red blood cells. 
D)  the formation of gametocytes. 
E)  entrance of trophozoites into red blood cells. 
A)  cycles of schizogony in the liver cells. 
B)  release of sporozoites from the oocysts. 
C)  escape of populations of merozoites from red blood cells. 
D)  the formation of gametocytes. 
E)  entrance of trophozoites into red blood cells.

Question 8

Discuss the significance of members of the order Trichomonadida,which possess hydrogenosomes (organelles analogous to mitochondria but which produce molecular hydrogen when oxygen is absent).

Accepted Answer

Members of the order Trichomonadida, whi

Question 9

Most of the time,although they usually have other options,protozoans reproduce by

Accepted Answer

A)  conjugation. 
B)  asexual cell division. 
C)  fusion of gametes. 
D)  parthenogenesis. 
E)  autogamy. 
A)  conjugation. 
B)  asexual cell division. 
C)  fusion of gametes. 
D)  parthenogenesis. 
E)  autogamy.

Question 10

The distinction between phagotrophs (or holozoic feeders)and osmotrophs (or saprozoic feeders)is a difference between

Accepted Answer

A)  eating living and eating dead organic material. 
B)  diffusion of food across the membrane versus engulfing food in a vacuole. 
C)  ingesting visible particles or organisms versus ingesting dissolved substances, sometimes from dead organisms. 
D)  producing your own food versus using the chemical bonds in food molecules made by others. 
E)  direct transport versus indirect transport of food molecules. 
A)  eating living and eating dead organic material. 
B)  diffusion of food across the membrane versus engulfing food in a vacuole. 
C)  ingesting visible particles or organisms versus ingesting dissolved substances, sometimes from dead organisms. 
D)  producing your own food versus using the chemical bonds in food molecules made by others. 
E)  direct transport versus indirect transport of food molecules.

Question 11

The structure in a Euglena that functions to orient it to light is the _______________________ or eyespot.

Accepted Answer

The answer of The structure in a Euglena that functions...

Question 12

What is the name of the mouth structure found at the end of the oral groove in a Paramecium ciliate?

Accepted Answer

A)  phagosome 
B)  lysosome 
C)  cytostome 
D)  cytoproct 
E)  paramylon body 
A)  phagosome 
B)  lysosome 
C)  cytostome 
D)  cytoproct 
E)  paramylon body

Question 13

Most ciliophoran protozoa

Accepted Answer

A)  possess flagella. 
B)  possess a cytostome. 
C)  are marine. 
D)  are parasitic. 
E)  have cyst stages for surviving harsh conditions. 
A)  possess flagella. 
B)  possess a cytostome. 
C)  are marine. 
D)  are parasitic. 
E)  have cyst stages for surviving harsh conditions.

Question 14

What are the functions of the macronucleus and one or more small micronuclei in Paramecium?

Accepted Answer

A)  The macronucleus undergoes meiosis to produce haploid micronuclei that are exchanged in conjugation; this then produces a micronucleus for general cell housekeeping. 
B)  The micronucleus undergoes meiosis to produce haploid micronuclei that are exchanged in conjugation; the macronucleus is responsible for the "day-to-day" functions of the cell. 
C)  Diploid micronuclei control the cell and the haploid macronuclei are exchanged in conjugation for reproduction. 
D)  A micronucleus is always (1n) for conjugative reproduction, the macronucleus functions for general cell coding, and the two are otherwise unrelated. 
E)  None of the choices are correct. 
A)  The macronucleus undergoes meiosis to produce haploid micronuclei that are exchanged in conjugation; this then produces a micronucleus for general cell housekeeping. 
B)  The micronucleus undergoes meiosis to produce haploid micronuclei that are exchanged in conjugation; the macronucleus is responsible for the "day-to-day" functions of the cell. 
C)  Diploid micronuclei control the cell and the haploid macronuclei are exchanged in conjugation for reproduction. 
D)  A micronucleus is always (1n) for conjugative reproduction, the macronucleus functions for general cell coding, and the two are otherwise unrelated. 
E)  None of the choices are correct.

Question 15

What is the function of the contractile vacuole in protozoa?

Accepted Answer

A)  water balance 
B)  digestion 
C)  locomotion 
D)  excretion of nitrogen wastes 
E)  respiration 
A)  water balance 
B)  digestion 
C)  locomotion 
D)  excretion of nitrogen wastes 
E)  respiration

Question 16

What is the most likely habitat in which to find gnathostomulids or jaw worms?

Accepted Answer

A)  under rocks in shallow water 
B)  inside the intestine of mammals 
C)  in costal sediment with low oxygen 
D)  in mountain streams with high oxygen 
A)  under rocks in shallow water 
B)  inside the intestine of mammals 
C)  in costal sediment with low oxygen 
D)  in mountain streams with high oxygen

Question 17

The most likely mechanism for removing excess water by contractile vacuoles is

Accepted Answer

A)  simple osmosis of water across the cell membrane. 
B)  differential fluid pressure. 
C)  reverse osmosis. 
D)  a proton pump that also pulls water into the vacuole. 
E)  an ampulla that forms suction. 
A)  simple osmosis of water across the cell membrane. 
B)  differential fluid pressure. 
C)  reverse osmosis. 
D)  a proton pump that also pulls water into the vacuole. 
E)  an ampulla that forms suction.

Question 18

Which structure is NOT correctly linked to the type of movement or podial function?

Accepted Answer

A)  Axoneme-actin-binding protein that keeps ectoplasm from gelling 
B)  Axopodia-thin rods of microtubules 
C)  Lobopodia-flow of both endoplasm and ectoplasm 
D)  Filopodia-thin extensions of only ectoplasm 
E)  Reticulopodia-a thin net-like mesh 
A)  Axoneme-actin-binding protein that keeps ectoplasm from gelling 
B)  Axopodia-thin rods of microtubules 
C)  Lobopodia-flow of both endoplasm and ectoplasm 
D)  Filopodia-thin extensions of only ectoplasm 
E)  Reticulopodia-a thin net-like mesh

Question 19

The protozoan dictyosome is called what in other eukaryotes?

Accepted Answer

A)  ribosome 
B)  mitochondrium 
C)  endoplasmic reticulum 
D)  golgi apparatus 
E)  plastid 
A)  ribosome 
B)  mitochondrium 
C)  endoplasmic reticulum 
D)  golgi apparatus 
E)  plastid

Question 20

The ciliate group of protists would include

Accepted Answer

A)  Amoeba proteus. 
B)  Plasmodium vivax. 
C)  Toxoplasma gondii. 
D)  Entamoeba histolytica. 
E)  Paramecium caudatum. 
A)  Amoeba proteus. 
B)  Plasmodium vivax. 
C)  Toxoplasma gondii. 
D)  Entamoeba histolytica. 
E)  Paramecium caudatum.

Exam 11: Unicellular Eukaryotes

Amebic dysentery is caused by the protozoan species with the scientific name __________ ___________.

Which organelle was once an independent aerobic prokaryote engulfed by an anaerobic prokaryote?

Protective cysts are triggered by what?

Chagas disease in the Americas is carried by

Which protozoan group has a complicated parasitic life cycle that nearly always involves the production of infective spores?

Giardia lamblia causes

The chills and fever of malaria are correlated with

Discuss the significance of members of the order Trichomonadida,which possess hydrogenosomes (organelles analogous to mitochondria but which produce molecular hydrogen when oxygen is absent).

Most of the time,although they usually have other options,protozoans reproduce by

The distinction between phagotrophs (or holozoic feeders)and osmotrophs (or saprozoic feeders)is a difference between

The structure in a Euglena that functions to orient it to light is the _______________________ or eyespot.

What is the name of the mouth structure found at the end of the oral groove in a Paramecium ciliate?

Most ciliophoran protozoa

What are the functions of the macronucleus and one or more small micronuclei in Paramecium?

What is the function of the contractile vacuole in protozoa?

What is the most likely habitat in which to find gnathostomulids or jaw worms?

The most likely mechanism for removing excess water by contractile vacuoles is

Which structure is NOT correctly linked to the type of movement or podial function?

The protozoan dictyosome is called what in other eukaryotes?

The ciliate group of protists would include

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cells As Units of Life

Cellular Metabolism

Genetics: a Review

Organic Evolution

The Reproductive Process

Principles of Development

Architectural Pattern of an Animal

Taxonomy and Phylogeny of Animals

Sponges and Placozoans

Radiate Animals

Acoelomorpha,Platyzoa,and Mesozoa

Polyzoa and Kryptrochozoa

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Annelids and Allied Taxa

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Support, Protection, and Movement

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Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Support, protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Nervous Coordination: Nervous System and Sense Organs

Chemical Coordination: Endocrine System

Immunity

Animal Behavior

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Amebic dysentery is caused by the protozoan species with the scientific name _.