Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 21, Problem 1MC
Which of the following statements about protists is False?
- a. Same protists are photosynthetic.
- b. All protists are eukaryotes.
- c. Although protists are diverse, they form a single clade.
- d. Protists include both unicellular and multicellular species.
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Which of the following is NOT true of protists?
Select one:
a. Some are unicellular.
b. They may be photosynthetic.
c. They are usually aerobic, though some are not.
d. They may have cell walls.
e. They may be prokaryotic.
Which of the following characteristics is NOT one all protists share?
A.
mixotrophic, autotrophic and heterotrophic
B.
eukaryotic
C.
mostly unicellular
D.
symbionts
Which of the following statement(s) is/are TRUE?
a. yeasts are unicellular fungi
b. molds and mushrooms are filamentous fungi. The filaments are chains of cells called "hyphae"
C. most protozoa are unicellular, animal-like members of Domain Archaea, many of which are motile
and lack cell walls
d. algae have historically been described as "plant-like" protists because they contain chloroplasts
and cell walls
e. organisms which make chlorophyll a can perform oxygenic photosynthesis
f. all organisms which make chlorophyll a have chloroplasts
g. Nostoc, algae and plants all make chlorophyll a and all have chloroplasts
h. Nostoc, algae and plants have mitochondria which evolved from primitive endosymbiotic bacteria
i. Photoautotrophs perform photosynthesis and chemoheterotrophs require pre-formed organic
molecules as a source of carbon and energy
j. Cyanobacteria, algae and plants are photoautotrophs. Fungi, protozoa and animals are
chemoheterotrophs
k. Most bacteria, all fungi, all algae…
Chapter 21 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 21.1 - define protist and describe the various ways in...Ch. 21.1 - What do biologists mean when they say that sex and...Ch. 21.1 - describe a scenario for the evolutionary origin of...Ch. 21.1 - describe the major effects of protists on people...Ch. 21.2 - Just as the invasive Cauterpa seaweed often...Ch. 21.2 - Cauferpa taxifolia, the invasive seaweed that...Ch. 21.2 - Is it important to stop the spread of Caulerpa?...Ch. 21.2 - list the major protist taxonomic groups and the...Ch. 21.2 - Imagine that you are a physician consulting with a...Ch. 21.2 - If you like sushi, youve probably eaten a sushi...
Ch. 21.2 - describe some examples of how members of each...Ch. 21 - The internal structure of many protists is much...Ch. 21 - Which of the following statements about protists...Ch. 21 - List the major differences between prokaryotes and...Ch. 21 - What are some important benefits and services...Ch. 21 - Prob. 2FIBCh. 21 - The harmful protist blooms known as red tides are...Ch. 21 - What is secondary endosymbiosis?Ch. 21 - Protist chloroplasts surrounded by four-layer...Ch. 21 - The organism that causes malaria belongs to which...Ch. 21 - what is the importance of dinoflagellates in...Ch. 21 - Prob. 4FIBCh. 21 - The finger-like extensions of the cell membrane...Ch. 21 - What is the major ecological role played by...Ch. 21 - Prob. 5FIBCh. 21 - Prob. 5MCCh. 21 - Which protist group consists entirely of parasitic...Ch. 21 - Prob. 6FIBCh. 21 - Which protist groups include seaweeds?Ch. 21 - Which protist groups include species that use...
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- Which of the following protist exhibit the discoid type of mitochondrial cristae? A. trypanosoms B. diatoms C. oomycete D. brown algaearrow_forwardWhich of the following explains why protists are considered a paraphyletic group? A Protists are prokaryotic. B Protists cannot be a monophyletic group because their morphology and behavior are so variable. C Protists lack a common ancestor. O D The MRCA of the protists also gave rise to plants, animals, and fungi. O E Choices B and D are both correct.arrow_forwardWhich statement about protists is true? a. Protists have many different metabolic lifestyles. b. Almost all protists are parasitic. c. All protists use pseudopods or cilia to locomote. d. All marine protists rid themselves of excess water by means of contractile vacuoles. e. Protists are found only in aquatic habitats.arrow_forward
- Which of the following can be associated with life cycles in protists? Select all that apply. A. alternation of generations B. multicellular haploids and unicellular diploids C. heterotrophic diploids and phototrophic haploids D. meiosis and fertilization E. binary fission F. zygotes producing gametesarrow_forwardYou have discovered a photosynthetic protist that lives in fairly deep water (for example, 250 m deep). To which of the following groups should this organism be classified? A. diatoms B. green algae C. red algae D. cercozoanarrow_forwardWhich of the following is NOT a characteristic of all protists?a. Unicellularb. Cells containing membrane-bounded organellesc. Cells containing a nucleusd. Eukaryoticarrow_forward
- What genus of protists appears to contradict the statement that unicellularity restricts cell size? a. Dictyostelium b. Ulva c. Plasmodium d. Caulerpaarrow_forwardWhat feature of protists allow them to survive harshenvironmental conditions?a. vegetative cellsb. planktonc. cystsd. plastidse. vacuolesarrow_forwardIdentify from the list below the protists that function almost like multicellular organisms when food is depleted, forming a multicellular mass that forms fruiting bodies. A. slime molds B. oomycetes C. cercozoans D. diatomsarrow_forward
- Identify from the list below the protists that possess two flagella, are unicellular and common members of the phytoplankton A. diatoms B. dinoflagellates C. forams D. parabasalidsarrow_forwardSlime molds/moulds or mycetozoans is a broad term that applies to many fungus-like protists. a. In what sense is it appropriate to describe slime molds as “fungus animal”? b. Elaborate on the evolution of the slime molds into two distinct groups.arrow_forwardwhich of the statements is not true regarding protist? a. they may have cell walls b. They may be photosynthetic c. they may be prokaryotic d. they are usually aerobic though some are not e. some are unicellulararrow_forward
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