Question 1

The various species of Plasmodium vary in

Accepted Answer

A) their incubation period. 
B) the intensity of their physical symptoms. 
C) the number of times they initiate schizogony in liver cells. 
D) mortality,or risk of death,to the human host. 
E) All of the choices are variables in Plasmodium. 
A) their incubation period. 
B) the intensity of their physical symptoms. 
C) the number of times they initiate schizogony in liver cells. 
D) mortality,or risk of death,to the human host. 
E) All of the choices are variables in Plasmodium.

Question 2

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 3

How does the mosquito transmit malaria from an ill person to a healthy person?

Accepted Answer

A) Plasmodium is taken up from one person's blood and squirted back out into the next person. 
B) Plasmodium gametocytes are taken up from one person's blood and cross into the saliva duct to be reinjected into the next person. 
C) Plasmodium gametocytes are taken up from one person's blood,fuse to form a zygote that becomes a motile ookinete that enters the saliva ducts. 
D) Plasmodium gametocytes are taken up from one person's blood,fuse to form a zygote that becomes a motile ookinete,that crosses the stomach wall,forms an oocyst that undergoes sporogony and the sporozoites then migrate to the saliva ducts to be injected into the human host. 
E) Plasmodium gametocytes are sucked from one person's blood,form an oocyst that undergoes sporogony and the sporozoites migrate across the stomach lining to the saliva ducts. 
A) Plasmodium is taken up from one person's blood and squirted back out into the next person. 
B) Plasmodium gametocytes are taken up from one person's blood and cross into the saliva duct to be reinjected into the next person. 
C) Plasmodium gametocytes are taken up from one person's blood,fuse to form a zygote that becomes a motile ookinete that enters the saliva ducts. 
D) Plasmodium gametocytes are taken up from one person's blood,fuse to form a zygote that becomes a motile ookinete,that crosses the stomach wall,forms an oocyst that undergoes sporogony and the sporozoites then migrate to the saliva ducts to be injected into the human host. 
E) Plasmodium gametocytes are sucked from one person's blood,form an oocyst that undergoes sporogony and the sporozoites migrate across the stomach lining to the saliva ducts.

Question 4

Protozoans in the genus Trypanosoma cause

Accepted Answer

A) malaria in both humans and birds. 
B) amebic dysentery and intestinal ailments. 
C) African sleeping sickness and Chagas disease. 
D) birth defects if infecting a woman at the appropriate stage of pregnancy. 
E) Toxoplasmosis,often contracted from cats. 
A) malaria in both humans and birds. 
B) amebic dysentery and intestinal ailments. 
C) African sleeping sickness and Chagas disease. 
D) birth defects if infecting a woman at the appropriate stage of pregnancy. 
E) Toxoplasmosis,often contracted from cats.

Question 5

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 6

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 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. 
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.

Question 8

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 9

Haploid cells that are unequal in size,such as sperm and egg,are called

Accepted Answer

A) anisogametes. 
B) syngametes. 
C) autogametes. 
D) unigametes. 
E) isogametes. 
A) anisogametes. 
B) syngametes. 
C) autogametes. 
D) unigametes. 
E) isogametes.

Question 10

When a protozoan alternates between haploid and diploid generations,as occurs in most plants,it is called

Accepted Answer

A) zygotic meiosis. 
B) gametic meiosis. 
C) intermediary meiosis. 
D) mitotic meiosis. 
E) parthenogenesis. 
A) zygotic meiosis. 
B) gametic meiosis. 
C) intermediary meiosis. 
D) mitotic meiosis. 
E) parthenogenesis.

Question 11

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

Question 12

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

Accepted Answer

A) syngamy. 
B) zygotic meiosis. 
C) gametic meiosis. 
D) autogamy. 
E) conjugation. 
A) syngamy. 
B) zygotic meiosis. 
C) gametic meiosis. 
D) autogamy. 
E) conjugation.

Question 13

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

Question 14

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 15

When a nucleus has chromatin that is clumped,leaving clear areas within the nucleus,the appearance is described as

Accepted Answer

A) pellicular. 
B) vesicular. 
C) micronuclear. 
D) kinetosomic. 
E) spicular. 
A) pellicular. 
B) vesicular. 
C) micronuclear. 
D) kinetosomic. 
E) spicular.

Question 16

Which is NOT a correct description of a member of a protozoan group?

Accepted Answer

A) Usually motile 
B) Development involves an embryonic stage 
C) Mostly microscopic 
D) Usually unicellular;if multicellular,without somatic differentiation 
E) All of the choices are correct 
A) Usually motile 
B) Development involves an embryonic stage 
C) Mostly microscopic 
D) Usually unicellular;if multicellular,without somatic differentiation 
E) All of the choices are correct

Question 17

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 18

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 19

To what extent are the cells of a colonial Volvox specialized?

Accepted Answer

A) The cells of Volvox are not specialized at all;all are equivalent in function and to be otherwise would make them like those of the metazoa. 
B) Somatic cells function in nutrition and locomotion while a few "germ" cells carry out reproduction. 
C) Germ cells specialize in locomotion,others in nutrition,and others in reproduction. 
D) Volvox is like two organisms living together symbiotically: one set of cells handles nutrition and locomotion and reproduce their type;another type of cell handles sexual reproduction and reproduce their type. 
E) A Volvox cell alternates between first being somatic,then being reproductive. 
A) The cells of Volvox are not specialized at all;all are equivalent in function and to be otherwise would make them like those of the metazoa. 
B) Somatic cells function in nutrition and locomotion while a few "germ" cells carry out reproduction. 
C) Germ cells specialize in locomotion,others in nutrition,and others in reproduction. 
D) Volvox is like two organisms living together symbiotically: one set of cells handles nutrition and locomotion and reproduce their type;another type of cell handles sexual reproduction and reproduce their type. 
E) A Volvox cell alternates between first being somatic,then being reproductive.

Question 20

What are long,thin pseudopodia supported by axial rods of microtubules called?

Accepted Answer

A) lobopodia 
B) filopodia 
C) axopodia 
D) reticulopodia 
E) actinopodia 
A) lobopodia 
B) filopodia 
C) axopodia 
D) reticulopodia 
E) actinopodia

Exam 11: Unicellular Eukaryotes

The various species of Plasmodium vary in

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

How does the mosquito transmit malaria from an ill person to a healthy person?

Protozoans in the genus Trypanosoma cause

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

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

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

Haploid cells that are unequal in size,such as sperm and egg,are called

When a protozoan alternates between haploid and diploid generations,as occurs in most plants,it is called

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

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

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

When a nucleus has chromatin that is clumped,leaving clear areas within the nucleus,the appearance is described as

Which is NOT a correct description of a member of a protozoan group?

The chills and fever of malaria are correlated with

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

To what extent are the cells of a colonial Volvox specialized?

What are long,thin pseudopodia supported by axial rods of microtubules called?

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

Architectual Pattern of an Animal

Taxonomy and Phylogeny of Animals

Sponges and Placozoans

Cnidarians and Ctenophores

Acoelomorpha, Platyzoa, and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Hexapods

Chaetognaths, echinoderms, and Hemichordates

Chordates

Fishes

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

Animal Distribution

Animal Ecology

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