BIOLOGY: CONCEPTS&INVEST. (LL)
5th Edition
ISBN: 9781264706983
Author: Hoefnagels
Publisher: MCG
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Textbook Question
Chapter 18, Problem 5MCQ
Why are DNA sequences useful in the classification of protists?
- a. Because only protists have DNA
- b. Because genetic sequences have confirmed the traditional categories of protists
- c. Because DNA reveals evolutionary relationships, even among organisms that look different
- d. All of the above are correct.
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Why is the classification of protists based on DNA sequences useful? *
a. Because only protists have DNA
b. Because it has confirmed the traditional categories for protists
c. Because it has revealed evolutionary relationships, even among organisms that look diffferent
d. All of the above are correct
This is a required question
(2) Why is a species with small population more likely than one with a large population to undergo an extinction? *
a. Because small population are exposed to greater environmental changes
b. Because genetic diversity is likely to be lower in a small population
c. Because the mutation rate is too low
d. Because they take too long to produce an offspring.
which 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 unicellular
What genus of protists appears to contradict the statement that unicellularity restricts cell size? a. Dictyostelium b. Ulva c. Plasmodium d. Caulerpa
Chapter 18 Solutions
BIOLOGY: CONCEPTS&INVEST. (LL)
Ch. 18.1 - What features define the protists?Ch. 18.1 - Prob. 2MCCh. 18.1 - Why are evolutionary biologists interested in...Ch. 18.2 - Prob. 1MCCh. 18.2 - Prob. 2MCCh. 18.2 - List and describe the characteristics of the major...Ch. 18.3 - What mode of nutrition do the slime molds and...Ch. 18.3 - Prob. 2MCCh. 18.3 - Prob. 3MCCh. 18.4 - Prob. 1MC
Ch. 18.4 - Prob. 2MCCh. 18.4 - List three diseases caused by flagellated...Ch. 18.4 - Compare and contrast amoebae, foraminiferans, and...Ch. 18.4 - How do ciliates move and eat?Ch. 18.4 - Prob. 6MCCh. 18.5 - Prob. 1MCCh. 18.5 - Prob. 2MCCh. 18.6 - Use the food chain in figure 18.21a to explain why...Ch. 18.6 - Prob. 2MCCh. 18 - Which of the following is NOT a characteristic of...Ch. 18 - Suppose you are studying a protist under a...Ch. 18 - Some protist lineages arose from secondary...Ch. 18 - Prob. 4MCQCh. 18 - Why are DNA sequences useful in the classification...Ch. 18 - Explain why evolutionary biologists are interested...Ch. 18 - The amoeba Pelomyxa palustris is a single-celled...Ch. 18 - How is it adaptive for a red alga to have pigments...Ch. 18 - How are kelp similar to trees? How are they...Ch. 18 - Prob. 5WIOCh. 18 - Prob. 6WIOCh. 18 - Prob. 7WIOCh. 18 - Suppose someone hands you a microscope and a...Ch. 18 - Review the Survey the Landscape figure in the...Ch. 18 - Prob. 2PITCh. 18 - Molecular data have changed protist...
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- What feature of protists allow them to survive harshenvironmental conditions?a. vegetative cellsb. planktonc. cystsd. plastidse. vacuolesarrow_forwardWhich of the following statements is the MOST compelling argument that fungi are more closely related to animals than plants? A. Plants have chloroplasts whereas fungi and animals cells do not. B. Plants fix carbon dioxide from the air; fungi and animals use pre-existing organic molecules. C. The DNA sequences of ribosomal RNA of fungi share more homology with ribosomal RNA from animals than plants. D. Both animal and fungal cells are eukaryotic.arrow_forwardWhich of these protists is hypothesized to be ancestral to animals? a. a green algal protist b. a choanoflagellate c. an amoeboid protistd. a slime moldarrow_forward
- It is thought that the mitochondria and chloroplasts of eukaryotic cells came froma. the development of the internal membrane system.b. protists.c. mutation.d. endosymbiosis of bacteriaarrow_forwardWhich of the following taxon contains the other? a. Species b. Class c. Order d. Genusarrow_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
- Which pair of species would be the most similar? a. Both are in the same kingdom but different phyla b. Both are in the same phylum but different classes O c. Both are in the same class but different orders d. Both are in the same order but in different genus O e. Both are in the same Domain but different Kingdomarrow_forwardA group of environmentalists is studying the effects of recent commercial zoning to wildlife acreage on the biodiversity of a rural county. The group noted a steady decline in the population of animals, while bacteria and other protists remained constant. Which statement best discusses the reasons for the steady decline of animals as opposed to the protists? A. Bacterial growth is usually not affected by environmental changes because of asexual reproduction. B. The animals could not adapt to the new environment. C. Bacteria lived in areas that were not affected by the zoning D. The animals became susceptible to human and environmental harm.arrow_forwardIn this data table comparing DNA sequences among various protists, why do some cells have a dash rather than a value? A. Those cells would compare one species to itself. B. Those cells would duplicate comparisons shown elsewhere in the matrix. C. Those comparisons were not made by the researchers.arrow_forward
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