Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 21, Problem 1AC
Summary Introduction
To review:
Whether protists engage in complex activities as compared to other multicellular organisms and the rationale behind the complex nature.
Introduction:
Protists are not a group of organisms with specific abilities. It is a rather term of convenience to classify eukaryotes that do not belong to plants, animals, and
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The internal structure of many protists is much more complexthan that of cells of multicellular organisms. Does thismean that the protist is engaged in more complex activitiesthan the multicellular organism is? If not, why are protistancells more complicated?
A protist that contains contractile vacuoles most likely lives ______.
in ice
in a marine environment
in fresh water
within the cells of another organism
Protists are a group of eukaryotic organisms that are brought together by scientists mostly by convenience. I) What is the relationship between all protists that ties them together? ii) provide an example of a autotrophic and heterotrophic protists group, iii) what is the relationship between the multicellular eukaryotes and the protists?
Chapter 21 Solutions
Biology: Life on Earth (11th Edition)
Ch. 21 - 1. Which of the following statements about...Ch. 21 - Prob. 2MCCh. 21 - The organism that causes malaria belongs to which...Ch. 21 - Prob. 4MCCh. 21 - Prob. 5MCCh. 21 - Prob. 1FTBCh. 21 - Prob. 2FTBCh. 21 - 3. Protist chloroplasts surrounded by four-layer...Ch. 21 - Prob. 4FTBCh. 21 - Prob. 5FTB
Ch. 21 - Prob. 6FTBCh. 21 - List the major differences between prokaryotes and...Ch. 21 - 2. What is secondary endosymbiosis?
Ch. 21 - Prob. 3RQCh. 21 - 4. What is the major ecological role played by...Ch. 21 - Which protist group consists entirely of parasitic...Ch. 21 - Which protist groups include seaweeds?Ch. 21 - Prob. 7RQCh. 21 - Prob. 1ACCh. 21 - Prob. 2AC
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- What distinguishes protists from prokaryotes? What distinguishes protists from fungi, land plants, and animals?arrow_forwardWhich parasitic protist evades the host immune system by altering its surface proteins with each generation? a. Paramecium caudatum b. Trypanosoma brucci c. Plasmodium falciparum d. Phytophthora infrstansarrow_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 advantage do you think a protist would gain by having a unicellular, filamentous, or colonial formarrow_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_forwardAmoeba, Paramecuim, and Spirogyra are diverse. Why, then, are they all classified as protists?arrow_forward
- What feature of protists allow them to survive harshenvironmental conditions?a. vegetative cellsb. planktonc. cystsd. plastidse. vacuolesarrow_forwardIs protist dna in a nucleus unicellular or multicellular?According to the phylogeny presented in this chapter which protists are in the same eukaryotic supergroup as plants a) green algae b) dinoflagellates c) red algaed both a and c in a lifecycle with alternation of generations multicellular haploid forms alternate with a unicellular haploid forms b unicellular diploid formsc multicellular haploid forms d) multicellular diploid formsarrow_forwardWhich 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.arrow_forward
- Which of the following protist exhibit the discoid type of mitochondrial cristae? A. trypanosoms B. diatoms C. oomycete D. brown algaearrow_forwardWhat characteristic distinguishes most animal-like protists from otherprotists?arrow_forwardHow are protists related to other eukaryotes, such as humans?arrow_forward
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