Deck 11: Eukaryotic Microorganisms and Parasites

Question 1

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

A) euglenoids
B) diatoms
C) sarcodines
D) dinoflagellates

Answer 1

C

Question 2

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

Answer 2

B

Question 3

Euglenoids contain a pigmented eyespot called a ________ ,which allows the protist to move toward light.

A) pellicle
B) stigma
C) test
D) septa

Answer 3

B

Question 4

Which of the following organisms is a saprophyte?

A) euglenoids
B) sarcodines
C) slime molds
D) diatoms

Question 5

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/n

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

Question 6

All protists

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

Question 7

Animal-like protists include

A) water molds
B) apicomplexans
C) diatoms
D) dinoflagellates

Question 8

Protozoa which are motile by means of flagella are members of the

A) mastigophorans
B) sarcodines
C) apicomplexans
D) ciliates

Question 9

A host in which a parasite reproduces sexually is a

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

Question 10

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

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

Question 11

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

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

Question 12

Organisms that obtain nutrients from decaying matter are

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

Question 13

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 14

Protozoa are

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

Question 15

Parasites having both male and female reproductive organs are known as

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

Question 16

Protists are classified according to whether they resemble organisms in each of the following kingdoms except

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

Question 17

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 18

Many protists have shells of calcium carbonate called

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

Question 19

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

Question 20

The Anopheles mosquito causes malaria,as the parasite must carry out part of its life cycle within the mosquito. In this case the mosquito is a

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

Question 21

Flatworms are more technically known as

A) platyhelminthes
B) nematodes
C) pseudocoelom
D) arachnids

Question 22

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

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

Question 23

Malaria is a result of infection by a

A) mastigophoran
B) sarcodine
C) apicomplexan
D) ciliate

Question 24

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 25

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 26

Bread molds are members of the phylum

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

Question 27

The only non-motile group of protozoans is the

A) mastigophorans
B) sarcodines
C) apicomplexans
D) ciliates

Question 28

Fungi with no sexual stage in their life cycle are found in the phylum

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

Question 29

The largest group of protozoa is the

A) mastigophorans
B) sarcodines
C) apicomplexans
D) ciliates

Question 30

Protozoans found in the human intestinal tract would most likely be

A) mastigophorans
B) sarcodines
C) apicomplexans
D) ciliates

Question 31

Which of the following statements about protists is true?

A) the protozoa 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 32

Mycology is defined as the study of

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

Question 33

Fungi are never

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

Question 34

The proper order of development of Plasmodium in human blood is

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

Question 35

Members of the phylum Ascomycota produce asexual spores called ________ .

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

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

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

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

Question 38

Fungi are classified according to the

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

Question 39

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 40

Cell walls in fungi are most often made of

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

Question 41

Wuchereria bancrofti is the causative agent of

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

Question 42

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 43

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

Question 44

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 45

Instead of a cell wall,many protists have a flexible outer covering called a

A) ciliate
B) pellicle
C) hyphae
D) redia

Question 46

Undercooked pork is most likely to pass along

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

Question 47

Fungi

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 48

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 49

Human fungal diseases are known by the general name _______.

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

Question 50

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 51

A mechanical vector

A) lives on or in another organism at the expense of the host
B) is simply along for the ride
C) reproduces as an asexual form in this host
D) infects by mechanical insertion of a syringe

Question 52

Arthropods are responsible for transmitting ________ pathogens.

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

Question 53

Which factor has 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 54

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 55

Helminths

A) are obligate parasites
B) have left and right halves that are mirror images
C) are a type of protozoa
D) humans typically worry about contracting Taenia Saginata from undercooked pork