Question 1

Osmoregulation in some protozoa is carried out chiefly by a structure called a/an __________ ___________.

Accepted Answer

The answer of Osmoregulation in some protozoa is carried out...

Question 2

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 3

The early development of a globular colony (with flagella inward)that then turns inside-out (with flagella outward)is

Accepted Answer

A) called an undulating membrane and is common among ciliates. 
B) a pseudoplasmodium and only found in protozoans. 
C) called inversion,and it is very common in early development in many animal groups. 
D) called inversion,and it is very rare among animals,only occurring in colonial flagellates and sponges. 
E) called reverse gastrulation and it is very rare among animals. 
A) called an undulating membrane and is common among ciliates. 
B) a pseudoplasmodium and only found in protozoans. 
C) called inversion,and it is very common in early development in many animal groups. 
D) called inversion,and it is very rare among animals,only occurring in colonial flagellates and sponges. 
E) called reverse gastrulation and it is very rare among animals.

Question 4

Chalky fossils that formed the White Cliffs of Dover were produced by

Accepted Answer

A) radiolarians. 
B) foraminiferans. 
C) ciliates. 
D) diatoms (as diatomaceous earth). 
E) dinoflagellates. 
A) radiolarians. 
B) foraminiferans. 
C) ciliates. 
D) diatoms (as diatomaceous earth). 
E) dinoflagellates.

Question 5

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 6

If you grow Euglena in a jar,and mask off all but a slit of light,they soon congregate at the slit.If you completely cover the jar and prevent exposure to light,they convert to heterotrophy.How are these organisms and these traits problematic for systematists?

Accepted Answer

These traits of Euglena can be problemat

Question 7

Generally,the human body creates antibodies in response to foreign substances that invade our blood or interstitial spaces.How can the malaria organism continue to survive in the human host to cause chills and fevers for years;that is,why do we not build up an immunity in a week or so?

Accepted Answer

The malaria organism, specifically the P

Question 8

What happens during conjugation in most ciliates?

Accepted Answer

A) Haploid micronuclei are exchanged. 
B) Macronuclei are formed. 
C) Binary fission occurs. 
D) The micronuclei disappear. 
A) Haploid micronuclei are exchanged. 
B) Macronuclei are formed. 
C) Binary fission occurs. 
D) The micronuclei disappear.

Question 9

The great pyramids of Egypt are made from stone formed from fossil

Accepted Answer

A) radiolarians. 
B) foraminiferans. 
C) heliozoans. 
D) snails. 
E) endoparasitic amoeboids of insects. 
A) radiolarians. 
B) foraminiferans. 
C) heliozoans. 
D) snails. 
E) endoparasitic amoeboids of insects.

Question 10

Which is a member of the apicomplexan group of protists?

Accepted Answer

A) Amoeba proteus 
B) Plasmodium vivax 
C) Chlamydomonas 
D) Trypanosoma 
E) Paramecium 
A) Amoeba proteus 
B) Plasmodium vivax 
C) Chlamydomonas 
D) Trypanosoma 
E) Paramecium

Question 11

Which of the following is NOT a "ciliate?"

Accepted Answer

A) Paramecium 
B) Stentor 
C) Vorticella 
D) Trichodina 
E) All of the choices are classified as ciliates. 
A) Paramecium 
B) Stentor 
C) Vorticella 
D) Trichodina 
E) All of the choices are classified as ciliates.

Question 12

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 13

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 14

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. 
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.

Question 15

Explain the scientific reasoning behind the reorganization of the "Protozoa." Why is this important?

Accepted Answer

The reorganization of the "Protozoa" is

Question 16

Which of the following is NOT a correct description of how the cytoplasm moves in pseudopodia?

Accepted Answer

A) Actin filaments become cross-linked by an actin-binding protein forming a semisolid gel-like state called ectoplasm. 
B) The nucleus codes for each movement using DNA and protein formation. 
C) Interaction with lipids in the cell membrane releases actin subunits and allows them to polymerize into actin microfilaments. 
D) Near the edge of the gel,calcium ions activate an actin-binding protein that releases the actin filaments from the gel. 
E) Myosin pulling on the edge of the gel causes contraction that forces endoplasm toward the hyaline cap. 
A) Actin filaments become cross-linked by an actin-binding protein forming a semisolid gel-like state called ectoplasm. 
B) The nucleus codes for each movement using DNA and protein formation. 
C) Interaction with lipids in the cell membrane releases actin subunits and allows them to polymerize into actin microfilaments. 
D) Near the edge of the gel,calcium ions activate an actin-binding protein that releases the actin filaments from the gel. 
E) Myosin pulling on the edge of the gel causes contraction that forces endoplasm toward the hyaline cap.

Question 17

Which is an example of a Ciliophoran protozoa?

Accepted Answer

A) Amoeba 
B) Trypanosoma 
C) Paramecium 
D) Plasmodium 
E) Giardia 
A) Amoeba 
B) Trypanosoma 
C) Paramecium 
D) Plasmodium 
E) Giardia

Question 18

The macronucleus of a ciliate elongates,constricts and divides without going through the mitotic stages in a process called

Accepted Answer

A) amitosis. 
B) budding. 
C) syngamy. 
D) autogamy. 
E) sporogony. 
A) amitosis. 
B) budding. 
C) syngamy. 
D) autogamy. 
E) sporogony.

Question 19

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 20

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 is 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 is correct.

Exam 11: Unicellular Eukaryotes

Osmoregulation in some protozoa is carried out chiefly by a structure called a/an __________ ___________.

Chagas disease in the Americas is carried by

The early development of a globular colony (with flagella inward)that then turns inside-out (with flagella outward)is

Chalky fossils that formed the White Cliffs of Dover were produced by

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 ______________.

If you grow Euglena in a jar,and mask off all but a slit of light,they soon congregate at the slit.If you completely cover the jar and prevent exposure to light,they convert to heterotrophy.How are these organisms and these traits problematic for systematists?

Generally,the human body creates antibodies in response to foreign substances that invade our blood or interstitial spaces.How can the malaria organism continue to survive in the human host to cause chills and fevers for years;that is,why do we not build up an immunity in a week or so?

What happens during conjugation in most ciliates?

The great pyramids of Egypt are made from stone formed from fossil

Which is a member of the apicomplexan group of protists?

Which of the following is NOT a "ciliate?"

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

The protozoan dictyosome is called what in other eukaryotes?

Protist reproduction

Explain the scientific reasoning behind the reorganization of the "Protozoa." Why is this important?

Which of the following is NOT a correct description of how the cytoplasm moves in pseudopodia?

Which is an example of a Ciliophoran protozoa?

The macronucleus of a ciliate elongates,constricts and divides without going through the mitotic stages in a process called

What is the function of the contractile vacuole in protozoa?

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

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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Osmoregulation in some protozoa is carried out chiefly by a structure called a/an _.