Deck 21: Protiststhe Simplest Eukaryotes

Question 1

Protists cause all EXCEPT which of the following diseases?

A) dysentery
B) neurotoxic shellfish poisoning
C) malaria
D) AIDS
E) trichomonal infections of the reproductive tract

Answer 1

D

Question 2

Which feature is shared by euglenoids and kinetoplastids?

A) an eyespot
B) a single flagellum
C) photoautotrophy
D) parasitic existence
E) live in marine and freshwater habitats

Answer 2

B

Question 3

Which is NOT a shared characteristic of parabasalids and diplomonads?

A) heterotrophy
B) flagella
C) oxygen-poor or anaerobic habitats
D) abundant mitochondria
E) presence of a pellicle

Answer 3

D

Question 4

Which group is most closely related to fungi?

A) radiolarians
B) stramenopiles
C) alveolates
D) choanoflagellates
E) oomycotes

Question 5

Which of the following specialized structures is NOT correctly paired with a function?

A) gullet; ingestion
B) cilia; food gathering
C) pellicle; digestion
D) contractile vacuole; water balance
E) pellicle; flexible support

Question 6

What feature is common to all the alveolates?

A) heterotrophy
B) lung-like sacs used for respiration
C) bioluminescence
D) complex life cycle with two hosts
E) membrane-bound sacs beneath the plasma membrane

Question 7

Protists are

A) autotrophic.
B) heterotrophic.
C) unicellular.
D) multicellular.
E) all of these.

Question 8

Which of the following is NOT true of euglenoids?

A) Many move by pseudopods.
B) Many contain chloroplasts.
C) Many absorb nutrients from their environment in a heterotrophic manner.
D) Their cell body is surrounded by a pellicle.
E) They use a contractile vacuole to maintain water balance.

Question 9

To which of the following groups does the organism in the above figure belong?

A) diplomonads, parabasalids, trypanosomes, and euglenoids
B) ciliates, dinoflagellates, and apicomplexans
C) water molds, diatoms, and brown algae
D) chlorophyte and charophyte algae
E) amoebas and slime molds

Question 10

Which of these groups is least closely related to the other four?

A) ciliates
B) finoflagellates
C) diplomonads
D) apicomplexans
E) all of the above are equally closely related

Question 11

The apicomplexan parasite Plasmodium infects cells of which of the following?

A) blood
B) liver
C) brain
D) both blood and liver
E) blood, liver, and brain

Question 12

To which of the following groups does the organism in the above figure belong?

A) diplomonads, parabasalids, trypanosomes, and euglenoids
B) ciliates, dinoflagellates, and apicomplexans
C) water molds, diatoms, and brown algae
D) chlorophyte and charophyte algae
E) none of the above

Question 13

Which statement is NOT true about malaria?

A) The disease is caused by an evolving organism.
B) It is transmitted from person to person by the bite of a mosquito.
C) Its mortality rate is linked to the allele for Sickle Cell Anemia.
D) Its greatest mortality rate is in Africa.
E) The number of cases reported in North America is rising.

Question 14

A pellicle is NOT

A) thin.
B) inside the plasma membrane.
C) made of elastic proteins.
D) intended to protect the cell.
E) involved in retaining the shape of the cell..

Question 15

Which of the following is incorrect concerning Radiolarians?

A) They have perforated shells of calcium carbonate.
B) They form part of the plankton.
C) They use pseudopods for feeding.
D) They have vacuoles that impart buoyancy.
E) They are heterotrophic protists.

Question 16

The term "plankton"

A) refers to a taxonomic division of algae.
B) is a common term for microscopic organisms that drift or swim weakly in water.
C) includes only multicellular forms.
D) refers to small aquatic plants.
E) would apply to large brown algae.

Question 17

Red tides and extensive fish kills are caused by population blooms of

A) Euglena.
B) specific dinoflagellates.
C) diatoms.
D) Plasmodium.
E) fish.

Question 18

To which of the following groups does the organism in the above figure belong?

A) diplomonads, parabasalids, trypanosomes, and euglenoids
B) ciliates, dinoflagellates, and apicomplexans
C) water molds, diatoms, and brown algae
D) chlorophyte and charophyte algae
E) amoebas and slime molds

Question 19

Which of the following is NOT a feature of trypanosomes?

A) anaerobic respiration
B) single, large mitochondrion
C) cause widespread and serious infections of humans and cattle in the tropics
D) life cycle involves an intermediate, blood-sucking insect host
E) causative agents of Chagas disease and African sleeping sickness

Question 20

Today the term "algae" is used primarily for organisms in the group(s)

A) bacteria.
B) protista.
C) plantae.
D) bacteria and protista only.
E) bacteria, protista, and plantae.

Question 21

Use the figure above to answer the following questions.It shows the life cycle of Chlamydomonas, a green alg
a.
Cellular slime molds can be distinguished from plasmodial slime molds on the basis of

A) reproductive structures.
B) spore formation.
C) number of nuclei per cell.
D) slime trails.
E) food requirements.

Question 22

Use the figure above to answer the following questions.
Which stage(s) is(are) the diploid sporozoite stage(s) of the Plasmodium (malaria) parasite?

A) A
B) B
C) C
D) A and B
E) none of these

Question 23

Which letter points to the counterpart of a stem in a flowering plant?

A) A
B) B
C) C
D) D
E) none of these

Question 24

The red algae are classified as

A) rhodophytes.
B) chlorophytes.
C) phaeophytes.
D) bryophytes.
E) pterophytes.

Question 25

Use the figure above to answer the following questions.It shows the life cycle of Chlamydomonas, a green alg
a.
Which stage(s) show(s) the diploid portion of the life cycle?

A) A
B) B
C) C
D) D
E) D and E

Question 26

Which of these statements is false regarding stramenopiles?

A) They have unique flagella with tinsel-like filaments.
B) Some species are unicellular.
C) They include diatoms and red algae.
D) Most are photosynthetic.
E) Their chloroplast structure hints at endosymbiotic origins.

Question 27

Use the figure above to answer the following questions.It shows the life cycle of Chlamydomonas, a green alg
a.
The closest relatives of fungi and animals are

A) amoebozoans.
B) chlorophytes.
C) alveolates.
D) stramenopiles.
E) none of these.

Question 28

Use the figure above to answer the following questions.It shows the life cycle of Chlamydomonas, a green alg
a.
The group Amoebozoa

A) are shape shifters.
B) includes the amoebas.
C) includes the slime molds.
D) includes species most of which are able to form pseudopods.
E) includes all of these.

Question 29

Red algae

A) are primarily marine organisms.
B) are thought to have developed from green algae.
C) contain xanthophylls as their main accessory pigments.
D) are mostly unicellular.
E) are all of these.

Question 30

Most freshwater algae belong to which group?

A) red algae
B) green algae
C) brown algae
D) golden algae
E) blue-green algae

Question 31

Use the figure above to answer the following questions.It shows the life cycle of Chlamydomonas, a green alg
a.
Cells very similar to choanoflagellates are found in:

A) Land plants
B) Sponges
C) Mold
D) Bacteria
E) None of these

Question 32

Use the figure above to answer the following questions.
Which stage(s) produce(s) the characteristic chills and fever of the disease?

A) A
B) B
C) C
D) A and B
E) B and C

Question 33

The above organism is responsible for fish kills and belongs to which of the following groups?

A) chrysophytes
B) dinoflagellates
C) flagellated protozoans
D) ciliates
E) oomycotes

Question 34

Which pigment(s) is(are) characteristic of chlorophytes?

A) chlorophyll a
B) phycobilins
C) chlorophyll b
D) phycoerythrins
E) chlorophylls a and b

Question 35

Use the figure above to answer the following questions.It shows the life cycle of Chlamydomonas, a green alg
a.
Asexual reproduction is indicated by letter

A) A.
B) B.
C) C.
D) D.
E) E.

Question 36

The gritty substance you may feel on your teeth after using toothpaste is actually

A) small deposits of sand.
B) diatomaceous earth.
C) cellulose from dinoflagellates.
D) a synthetic abrasive.
E) derived from foraminiferans.

Question 37

Chloroplasts of red algae may have evolved from ancient endosymbiotic

A) cyanobacteria.
B) dinoflagellates.
C) apicomplexans.
D) archaeans.
E) nitrifying bacteria.

Question 38

Use the figure above to answer the following questions.
The large organism shown here belongs to the ____ group?

A) kinetoplastids
B) diplomonads
C) green algae
D) red algae
E) brown algae

Question 39

Use the figure above to answer the following questions.It shows the life cycle of Chlamydomonas, a green alg
a.
Meiosis and germination of spores is indicated by letter

A) A.
B) B.
C) C.
D) D.
E) E.

Question 40

The organism shown here represents the ____ stage in the life cycle.

A) sporophyte
B) gametophyte
C) haploid
D) motile
E) feeding

Question 41

MATCHING
Classification.Select the best choice for the following statements using the five groups listed below.
a.apicomplexans
b.amoebozoans
c.euglenoids
d.dinoflagellates
e.trypanosomes
Chagas disease and African sleeping sickness are caused by members of this group.

Question 42

Classification.Select the best choice for the following statements in reference to the four groups of protists listed below.
a.stramenopiles
b.amoebozoans
c.alveolates
d.parabasalids and diplomonads
This group includes the diatoms.

Question 43

__________ and __________ are single-celled heterotrophs with a secreted shell.

Question 44

Are humans responsible for neurotoxic shellfish poisoning?

Question 45

Why is malaria such an effective disease?

Question 46

__________ are aquatic heterotrophs and autotrophs with a cellulose covering.

Question 47

Classification.Select the best choice for the following statements in reference to the four groups of protists listed below.
a.stramenopiles
b.amoebozoans
c.alveolates
d.parabasalids and diplomonads
The slime molds are members of this group.

Question 48

MATCHING
Classification.Select the best choice for the following statements using the five groups listed below.
a.apicomplexans
b.amoebozoans
c.euglenoids
d.dinoflagellates
e.trypanosomes
All members of this group are parasitic alveolates.

Question 49

In nutrient-rich water, photosynthetic protists may undergo population explosions known as __________.

Question 50

Classification.Select the best choice for the following statements in reference to the four groups of protists listed below.
a.stramenopiles
b.amoebozoans
c.alveolates
d.parabasalids and diplomonads
The common amoeba, Amoeba proteus, is a member of this group.

Question 51

Some protists have complex life cycles and change between the haploid and diploid state.This process is called __________.

Question 52

Classification.Select the best choice for the following statements in reference to the four groups of protists listed below.
a.stramenopiles
b.amoebozoans
c.alveolates
d.parabasalids and diplomonads
The malarial parasite Plasmodium is a member of this group.

Question 53

Classification.Select the best choice for the following statements in reference to the four groups of protists listed below.
a.stramenopiles
b.amoebozoans
c.alveolates
d.parabasalids and diplomonads
Paramecium belongs to this group.

Question 54

MATCHING
Classification.Select the best choice for the following statements using the five groups listed below.
a.apicomplexans
b.amoebozoans
c.euglenoids
d.dinoflagellates
e.trypanosomes
These possess an eyespot for detecting light needed for photosynthesis.

Question 55

MATCHING
Classification.Select the best choice for the following statements using the five groups listed below.
a.apicomplexans
b.amoebozoans
c.euglenoids
d.dinoflagellates
e.trypanosomes
Neurotoxin from some members of this group can kill humans.

Question 56

Euglenoids live in freshwater; a __________ rids them of excess water.

Question 57

MATCHING
Classification.Select the best choice for the following statements using the five groups listed below.
a.apicomplexans
b.amoebozoans
c.euglenoids
d.dinoflagellates
e.trypanosomes
These move by means of pseudopods.

Question 58

__________ are single-celled and mostly or entirely heterotrophic.

Question 59

__________ are heterotrophs that grow as a mesh of absorptive filaments.Some are plant pathogens.

Question 60

Which major group of eukaryotes are protists not closely related to?

Question 61

Why can red algae grow at deeper depths of water than green algae?