Chapter 18 Protists Full Test Bank

1.

In Paramecium, the function of a contractile vacuole is to 
 

2.

Of the following, which is not a characteristic of protists? 
 

3.

Which group of protists consumes CO₂ and produces O₂ for much of Earth, serving as the base of food webs in lakes, streams, and the oceans?

4.

A protective layer made of rigid or elastic protein strips surrounding the cell membrane of euglenoids is a 
 

5.

Silica walls are characteristic of 
 

6.

While on a field trip near the ocean coastline, you visit a company that harvests jellylike substance from protists. This substance can be used as food, or in biology lab dishes for culturing organisms that have red-blue pigments, and store starch like plants. The company extracts the substance from multicellular plant-like organisms. You are observing the economic values of

7.

Which algae group has the largest multicellular forms?

8.

A substance produced by brown algae that is used as an emulsifying and thickening agent in many foods and other products is 
 

9.

The Irish potato famine in the mid-1840s was caused by a heterotrophic protist, Phytophthora infestans, which caused widespread infection of potato plants. It was successful in infecting because it was

10.

The engulfment of food particles by a heterotrophic protist cell is

11.

Some protozoa have cell structures that are formed as temporary extensions of the cell membrane, allowing the cell to detect and respond to their environment, and to catch and engulf food. These extensions are called

12.

The organism Plasmodium falciparum causes malaria. In which type(s) of human cell(s) does it infect and grow? 
 

13.

In malaria, Plasmodium falciparum grow inside human cells. Because they use the human cells for food, they are which of the following? 
 

14.

A woman was told by her doctor that while she is pregnant, she might want to let someone else care for her cats so she would not contract toxoplasmosis. What is the mechanism of transmission of toxoplasmosis?

15.

From which source, is it thought, that chloroplasts in algae originated? 
 

16.

From which source, is it thought, that mitochondria in algae originated? 
 

17.

Euglena have chloroplasts and can perform phagocytosis. Euglena would be considered which of the following? 
 

18.

DNA sequence evidence suggests that plants, fungi, and animals arose from different lineages of unicellular protists. This suggests which of the following? 
 

19.

Euglena and dinoflagellates have chloroplasts and flagella. This indicates they are 
 

20.

Chlamydomonas is multicellular, produces motile haploid sperm, and is photosynthetic. Chlamydomonas is which of the following? 
 

21.

Entamoeba histolytica can cause amoebic dysentery. It moves using pseudopodia, can only feed by phagocytosis, and is unicellular. Entamoeba histolytica is classified as 
 

22.

Trichonympha is a unicellular flagellated protist that lives within termites and allows the termite to be able to "digest" wood. Trichonympha is which of the following? 
 

23.

Trichonympha is a unicellular flagellated protist that lives within termites and allows the termite to be able to "digest" wood. Trichonympha is classified as 
 

24.

African sleeping sickness is caused by Trypanosoma brucei, a unicellular flagellated protist that infects red blood cells after being injected into the bloodstream. Trypanosoma brucei is which of the following?

25.

Malaria is caused by Plasmodium falciparum, a nonmotile protist that contains a cluster of microtubules at one end of the cell. Once injected into the bloodstream, these microtubules are used to attach to red blood cells. In areas of the world where malaria is endemic, people have a relatively high incidence of the allele for

26.

Malaria is caused by Plasmodium falciparum, a nonmotile protist that contains a cluster of microtubules at one end of the cell. Once injected into the bloodstream, these microtubules are used to attach to red blood cells. Malaria is transmitted by the bite of a

27.

Malaria is caused by Plasmodium falciparum, a nonmotile protist that contains a cluster of microtubules at one end of the cell. Based on these characteristics, Plasmodium falciparum is classified as

28.

One reason that malaria continues to be the world's most significant infectious disease is because Plasmodium falciparum continues to develop resistance to the drugs that have been used to treat malaria. Which of the following is the contributing factor to its resistance? 
 

29.

Organisms, such as forams, move by pseudopodia and feed by phagocytosis. Thess organisms are classified as __________________protozoa. 
 

30.

Foraminiferan shells are made of 
 

31.

Dictyostelium discoideum is an unusual organism, one that straddles the boundary between the unicellular and the multicellular. Its feeding phase consists of individual amoeba-like cells that move independently, feeding on bacteria by phagocytosis. When the food runs out, cells begin to aggregate into a multicelled structure that migrates toward light. The cells differentiate into a base, stalk, and spores; only the spores survive to colonize a new habitat. What is the advantage of forming spores? 
 

32.

Diatoms are a type of algae, but with a hard silica shell. Which of the following structures would you expect to find directly underneath the silica shell? 
 

33.

Where in a diatom would you find its yellowish photosynthetic pigment? 
 

34.

Based on the theory of endosymbiosis, which of the following would you expect to find in a chloroplast? 
 

35.

Within the typical sexual reproduction of green algae, the genetic composition of the sporophyte form of the protist is

36.

Which of the following best states the hypothesis tested by Abrams and Townsend while investigating the natural selection of copepods that avoid predation of bioluminescent dinoflagellates?

37.

In the experiment studying bioluminescence and the predation of copepods by fish, a control group of jars with bioluminescent dinoflagellates experienced a higher predation rate of copepods by stickleback fish than in the jars with nonbioluminescent dinoflagellates. This provided significant evidence that

38.

The correct sequence in body forms and life stages occurring in alternation of generations in green algae protists is

39.

A dinoflagellate has both a transverse flagellum and longitudinal flagellum. 
 
True    False

40.

Golden algae, diatoms, and brown algae contain yellowish pigments. 
 
True    False

41.

Alternation of generations means having alternating, multicelled haploid and diploid phases in a life cycle. 
 
True    False

42.

All protists are single-celled. 
 
True    False

43.

Protists can be heterotrophs. 
 
True    False

44.

Protists can be autotrophs. 
 
True    False

45.

Slime molds may exist as either single amoeboid cells or large masses of cells that behave as one multicellular organism. 
 
True    False

46.

Water molds are unlike fungi in that water molds have diploid filaments and cell walls containing cellulose, whereas fungi have haploid filaments and cell walls containing chitin.

 
 
True    False