front 1
Plasmodium falciparum is a protistan parasite, borne by
mosquitoes, that constitutes a serious health problem for humans. The
disease it causes is: | back 1 B. malaria |
front 2 Protists are NOT monophyletic. This means: | back 2 C. that all protists are not more closely related to each other than they are to some other kinds of organisms |
front 3 Which of the following types of organisms are NOT considered to be
part of the plankton? | back 3 D. periphyton |
front 4
Phytophthora, a pathogen attacking a wide variety of plants,
is a(n): | back 4 B. protist |
front 5 Flagella can be used to: | back 5 E. propel the organism, collect food, and propel reproductive cells |
front 6 Phagocytosis (Phagotrophy) is: | back 6 E. the capture of food particles by a cell |
front 7 Endosymbiosis gave rise to: | back 7 D. both chloroplasts and mitochondria |
front 8 Which of the following statements is NOT true of Trichomonas vaginalis?
| back 8 D. It has mitosomes. |
front 9 Which of the following DOES NOT occur in Euglenozoa? | back 9 D. cilia |
front 10 The immediate ancestors of plants were: | back 10 A.charophyceans |
front 11 Stramenopiles are unique in that they possess: | back 11 B. hairy flagella |
front 12 There was a massive immigration of Irish to the United States in the
mid-19th century because of a failure of the Irish potato crop caused
by: | back 12 C. Phytophora infestans |
front 13 Which of the following statements best describes secondary
endosymbiosis? | back 13 B. A host cell ingests another cell already containing a primary symbiont. |
front 14 Which of the following statements is NOT true of any Foraminifera?
| back 14 E. They have flagella |
front 15 Amoebae are characterized by: | back 15 A. locomotion by extension of pseudopodia |
front 16 The collars on the cells of choanoflagellates have the function of:
| back 16 B. filtering bacterial food from the water |
front 17 The group of protists to which you are most closely related is:
| back 17 A. the choanoflagellates |
front 18 Which of the following terms DOES NOT describe a basic type of
protistan nutrition? | back 18 B. eutrophic |
front 19 Which of the following statements DOES NOT characterize decomposers?
| back 19 E. They contain endosymbionts. |
front 20 Algae appear in colors of gold, brown, red, or green. The
significance of that fact is: | back 20 A. These pigments absorb the quality of light prevalent in their various preferred habitats and enhance their photosynthetic ability. |
front 21 Which of the following are not used by protists for protection
against predators? | back 21 C. gamma radiation |
front 22 Bioluminescence is: | back 22 A. emission of flashes of light by organisms |
front 23 The dinoflagellate Pfisteria is an important protist. Which
of the following statements DOES NOT describe its attributes? | back 23 D. It is a major cause of food poisoning in humans. |
front 24 Which of the following statements is NOT true of protistan cysts?
| back 24 E. They attach to host cells by small hooks. |
front 25 The adaptive significance of sexual reproduction is that it: | back 25 A. diversifies genotypes thereby allowing faster evolutionary responses to changing environments |
front 26 In a zygotic life cycle: | back 26 A. Haploid cells form gametes that fuse to produce thick-walled diploid zygotes capable of surviving stressful conditions. |
front 27 Diatoms reproduce by: | back 27 C. a gametic life cycle |
front 28 Diatoms have a special problem: | back 28 D. because their two halves fit like the lid and body of a pillbox and on repeated cell divisions the half that is overlapped gets progressively smaller |
front 29 Exchange of genetic material in ciliates is known as: | back 29 C. conjugation |
front 30 When a ciliate reproduces asexually by mitosis: | back 30 A. The macronucleus divides into two with each new cell receiving an identical macronucleus. |
front 31 In sexual reproduction in ciliates the sequence of events is: A. (1) in each conjugating pair of cells all but one of the four
diploid micronuclei disintegrates, (2) then the surviving one
undergoes meiosis to produce four haploid micronuclei, of which three
also disintegrate, (3) the remaining micronucleus undergoes mitosis to
produce two, (4) of which one stays in the parent cell and the other
moves to the opposite cell while the macronucleus in each cell
disintegrates, (5) the cells separate, each with two nuclei, one of
its own and one from its conjugant, (6) one haploid micronucleus in
each cell forms a new haploid macronucleus and the other divides
mitotically to form eight new haploid micronuclei, (7) the two haploid
macronuclei fuse to form a diploid one and the eight haploid
micronuclei fuse by pairs into four diploid micronuclei. | back 31 B. (1) in each conjugating pair of cells all but one of the four diploid micronuclei disintegrates, (2) then the surviving one undergoes meiosis to produce four haploid micronuclei, of which three also disintegrate, (3) the remaining micronucleus undergoes mitosis to produce two, (4) of which one stays in the parent cell and the other moves to the opposite cell while the macronucleus in each cell disintegrates, (5) the cells separate, each with two nuclei, one of its own and one from its conjugant, (6) the two haploid micronuclei in each cell fuse to form a diploid micronucleus, that (7) divides mitotically, producing diploid macronuclei and micronuclei. |
front 32
Plasmodium sporozoites produce merozoites in the human:
| back 32 D. liver |
front 33 The sexual phase of Plasmodium is called a: | back 33 B. gametocyte |
front 34 The symptoms of malaria are: | back 34 E. alternating chills and fever |
front 35 The malarial stage infecting red blood cells of humans are the:
| back 35 A. merozoites |
front 36 Sleeping sickness is transmitted by: | back 36 B. tsetse flies |
front 37 Knowledge of a pathogen's genome is useful because: | back 37 D. It allows developing drugs that target metabolic pathways unique to the pathogen. |
front 38 The photosynthetic systems of algae living in deeper water are
adapted to absorb more of the light of which of the following colors?
| back 38 C. blue-green |
front 39 The choanoflagellates are in the supergroup: | back 39 A. Opisthokonta |
front 40 Slime molds are in the supergroup: | back 40 C. Amoebozoa |
front 41 Some algae are more closely related to plants than they are to other algae. | back 41 TRUE |
front 42 Protozoa are monophyletic. | back 42 FALSE |
front 43 The supergroup Excavata contain some of Earth's most recent eukaryotes. | back 43 FALSE |
front 44 Metaboly is a reduced level of metabolism that allows protists to remain dormant under stressful environments. | back 44 FALSE |
front 45 Paramylon are stored particles of carbohydrate | back 45 TRUE |
front 46 Red algae, green algae, and plants are so closely related that they are grouped in the same supergroup by most biologists. | back 46 TRUE |
front 47 Animals and fungi are more closely related to each other than either is to plants. | back 47 TRUE |
front 48 Zoospores are single flagellated cells that disperse otherwise nonmotile protists. | back 48 TRUE |
front 49 Sexual reproduction provides multiple benefits to protists | back 49 TRUE |
front 50 The alternate host for Entamoeba histolytica is the Anopheles mosquito. | back 50 FALSE |