Deck 11: Eukaryotic Microorganisms and Parasites

Question 1

Euglenoids contain a stigma,the purpose of which is to:

A)control the passage of molecules in and out of the cell
B)communicate with other cells
C)allow the protist to move toward light for photosynthesis
D)digest nutrients

Answer 1

C

Question 2

Protozoa that move using flagella are members of the _____.

A)Mastigophorans
B)Amebozoans
C)Apicomplexans
D)Ciliophorans

Answer 2

A

Question 3

Diatoms possess:

A)photosynthetic pigments other than chlorophyll
B)an outer layer containing silicates
C)abrasive qualities
D)all of the above

Answer 3

D

Question 4

Organisms that are normally free living but can also obtain nutrients from a host are called _____.

A)facultative parasites
B)obligate parasite
C)biological vectors
D)accidental parasites

Question 5

Parasites having both male and female reproductive organs are known as _____.

A)obligate parasites
B)schizonts
C)hermaphrodites
D)accidental parasites

Question 6

A leech that feeds on a person swimming in a pond then releases itself from the skin to return to the water is an example of a/an:

A)endoparasite
B)permanent parasite
C)temporary parasite
D)reservoir host

Question 7

Protists may be described according to whether they resemble organisms in each of the following kingdoms except:

A)Bacteria
B)Fungi
C)Animals
D)Plants

Question 8

Organisms that obtain nutrients from decaying matter are called _____.

A)autotrophs
B)heterotrophs
C)saprophytes
D)lithophytes

Question 9

Protozoa are almost always:

A)multicellular
B)parasitic
C)heterotrophic
D)photosynthetic

Question 10

Water molds and slime molds have characteristics typical of _____.

A)fungi and plants
B)fungi and animals
C)animals and plants
D)None of these

Question 11

The Anopheles mosquito carries the disease malaria,as the parasite must carry out part of its life cycle within the mosquito. In this case,the mosquito is a/an:

A)permanent parasite
B)biological vector
C)mechanical vector
D)accidental host

Question 12

Parasites which live within the bodies of other organisms are classified as _____.

A)accidental parasite
B)endoparasites
C)facultative parasites
D)ectoparasites

Question 13

A mosquito that lives on a host and is itself infected with the protozoa responsible for malaria is an example of:

A)temporary parasitism
B)permanent parasitism
C)hyperparasitism
D)facultative parasitism

Question 14

Many protists have shells of calcium carbonate called _____.

A)exoskeletons
B)carapaces
C)tests
D)plastrons

Question 15

A host in which a parasite reproduces sexually is a _____.

A)primary host
B)definitive host
C)intermediate host
D)reservoir host

Question 16

Animal-like protists include _____.

A)Water molds
B)Apicomplexans
C)Diatoms
D)Dinoflagellates

Question 17

All protists:

A)are photosynthetic
B)have a true nucleus
C)have cell walls
D)are parasites

Question 18

An organism that lives at the expense of another organism is a _____.

A)mutualistic
B)commensal
C)parasite
D)symbiont

Question 19

Which of the following is not an example of a plantlike protist?

A)Euglenoids
B)Diatoms
C)Amebozoans
D)Dinoflagellates

Question 20

Which of the following organisms is a saprophyte?

A)Euglenoids
B)Amebozoans
C)Slime molds
D)Diatoms

Question 21

Mycology is defined as the study of _____.

A)microbes
B)protists
C)fungi
D)plants

Question 22

Flatworms are known scientifically as _____.

A)platyhelminths
B)cestodes
C)nematodes
D)arachnids

Question 23

Protozoans found in the human intestinal tract would most likely be _____.

A)Mastigophorans
B)Amebozoans
C)Apicomplexans
D)Ciliophorans

Question 24

Malaria is a result of infection by a/an _____.

A)Mastigophoran
B)Amebozoan
C)Apicomplexan
D)Ciliophoran

Question 25

The proper order of development of Plasmodium from the time of infection to the parasitization of red blood cells is:

A)trophozoite→merozoite→sporozoite
B)sporozoite→merozoite→trophozoite
C)trophozoite→sporozoite→merozoite
D)sporozoite→trophozoite→merozoite

Question 26

Fungi are classified according to the _____.

A)type of cell wall they posses
B)type of photosynthetic pigments they posses
C)the nature of their sexual cycle
D)the nature of their asexual cycle

Question 27

One major difference between flatworms and roundworms is that _____.

A)roundworms are never parasites
B)flatworms are never parasites
C)roundworms have a pseudocoelom
D)flatworms don't infect humans

Question 28

Which of the following statements about protists is true?

A)The protozoan responsible for malaria is classified as a ciliate.
B)Eutrophication occurs when protists stop growing in a body of water.
C)Amoeba move by means of cilia.
D)All protists are eukaryotic.

Question 29

Fungi are never _____.

A)saprophytes
B)obligate parasites
C)facultative parasites
D)heterotrophs

Question 30

Mushrooms,as well as the human pathogen Cryptococcus are classified in the phylum _____.

A)Zygomycota
B)Ascomycota
C)Basidiomycota
D)Deuteromycota

Question 31

The only non-motile group of protozoans is the _____.

A)Mastigophorans
B)Amebozoans
C)Apicomplexans
D)Ciliophorans

Question 32

Members of the phylum Ascomycota produce asexual spores called ________ .

A)antheridia
B)archegonia
C)ascogonia
D)conidia

Question 33

Fungal hyphae are sometimes separated into smaller compartments by cross walls called _____.

A)mycelium
B)thalli
C)sporangia
D)septa

Question 34

Fungi can be differentiated from plants by the fact that:

A)fungi are all unicellular, plants are all multicellular
B)fungi do not have a cell wall, plants have a cell wall
C)fungi cannot photosynthesize, plants can photosynthesize
D)fungi are prokaryotic, plants are eukaryotic

Question 35

Cells walls in fungi are often made of _____.

A)cellulose
B)peptidoglycan
C)chitin
D)calcium carbonate

Question 36

A typical fungus consists of a mass called a ________ made up of many threadlike structures called ________ .

A)thallus, mycelium
B)mycelium, hyphae
C)hyphae, mycelium
D)mycelium, thallus

Question 37

Fungi with no known sexual stage (in their life cycle)are assigned to the phylum _____.

A)Zygomycota
B)Ascomycota
C)Basidiomycota
D)Deuteromycota

Question 38

The largest group of protozoa is the _____.

A)Mastigophorans
B)Amebozoa
C)Apicomplexans
D)Ciliophora

Question 39

The major characteristic used to divide protozoans into four major groups is _____.

A)type of feeding behavior
B)habitat
C)reproduction strategies
D)type of motility

Question 40

Bread molds are members of the phylum _____.

A)Zygomycota
B)Ascomycota
C)Basidiomycota
D)Deuteromycota

Question 41

Arachnids have ________ legs and include ________.

A)six, lice, fleas and flies
B)six, ticks and mites
C)eight, lice, fleas and flies
D)eight, ticks and mites

Question 42

Helminths:

A)are all obligate parasites
B)have left and right halves that are mirror images
C)are a type of protozoa
D)are all hermaphroditic

Question 43

Which factor(s)has/have contributed to malaria's recent comeback?

A)Failure to vaccinate people living in susceptible areas
B)Emergence of DDT resistant mosquitoes
C)Environmental changes in developing countries
D)Two of the above factors

Question 44

Which of the following statements about Fungi is true?

A)sexual stages have all been observed
B)are the biggest organisms on earth
C)live in the intestine or circulatory system of hosts
D)are all multicellular

Question 45

Wuchereria bancrofti is the causative agent of _____.

A)trichinosis
B)malaria
C)sleeping sickness
D)elephantitis

Question 46

The Guinea worm is carried by:

A)ticks
B)insects
C)arachnids
D)crustaceans

Question 47

Tapeworms consist of a head end and a long chain of hermaphroditic segments,each of which is called a ________.

A)scolex
B)proglottid
C)sporocyst
D)cysticercus

Question 48

A mechanical vector:

A)lives on or in another organism at the expense of the host
B)simply carries microbes on the outside of its body
C)reproduces as an asexual form in this host
D)infects by mechanical insertion of a syringe

Question 49

Parasites are dependent on their hosts for survival. Which organism do you think is better adapted to a parasitic lifestyle,one that is virulent and often kills its host,or one that only causes mild chronic illness in its host? For vector-transmitted parasites there are two hosts involved in the lifecycle,how does that complicate adaptation to the human host?

Question 50

Outline or illustrate in detailed form the life cycle of the malaria parasite,naming the stages and the various host organisms involved.Describe another protozoan that causes human diseases.

Question 51

What are the four groups of parasitic helminthes? Name one parasitic helminth in each group that causes human disease and describe its hosts and transmission.

Question 52

This organism belongs to the:

A)protists
B)arthropods
C)helminths
D)fungi

Question 53

This organism moves by:

A)pseudopodia
B)cilia
C)flagella
D)microtubules

Question 54

A tapeworm's hydatid cyst:

A)contains only one cysticercus or bladder worm
B)migrates to the host's digestive gland
C)can enlarge and develop many tapeworm heads
D)develops into mature flukes

Question 55

Human fungal diseases are known by the general name _______.

A)canadiasis
B)mycoses
C)mylcelium
D)none of the above

Question 56

This organism moves by:

A)flagella
B)cilia
C)pseudopodia
D)cannot move

Question 57

Undercooked pork is most likely to pass along _____.

A)Schistosoma
B)Echinococcus
C)Wuchereria
D)Trichinella

Question 58

Arthropods are responsible for transmitting ________ pathogens.

A)viral
B)bacterial
C)protozoan
D)viral, bacterial and protozoan