Prescott's Microbiology
11th Edition
ISBN: 9781260211887
Author: WILLEY, Sandman, Wood
Publisher: McGraw Hill
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Chapter 24, Problem 3AL
Summary Introduction
A large group that includes Apicomplexa, Ciliophora, Dinoflagellata are called Alveolata. Apicomplexa is otherwise called as Apicomplexia. It is unicellular and endospore-forming. All the apicomplexans are either inter or intracellular parasites of animals. Most of the apicomplexan have a unique form of organelle that includes a type of plastid is known as apicoplast.
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Chapter 24 Solutions
Prescott's Microbiology
Ch. 24.1 - Prob. 1CCCh. 24.1 - Prob. 2CCCh. 24.1 - Prob. 3CCCh. 24.1 - Prob. 4CCCh. 24.1 - Prob. 5CCCh. 24.1 - Describe vesicular, ovular, and chromosomal...Ch. 24.1 - Why has taxonomic classification of protists been...Ch. 24.2 - Prob. 1MICh. 24.2 - What are the functions of the stigma and the...Ch. 24.2 - Prob. 1CC
Ch. 24.2 - What is the function of the plasmalemma and...Ch. 24.2 - Prob. 3CCCh. 24.3 - Prob. 1MICh. 24.3 - Prob. 2MICh. 24.3 - Prob. 1CCCh. 24.3 - Prob. 2CCCh. 24.3 - Prob. 3CCCh. 24.4 - Prob. 1MICh. 24.4 - What are the functions of the micronucleus and...Ch. 24.4 - How does the trigger for sexual reproduction...Ch. 24.4 - Prob. 1CCCh. 24.4 - Compare how radiolaria use axopodia with the way...Ch. 24.4 - Prob. 3CCCh. 24.4 - Prob. 4CCCh. 24.4 - Describe conjugation as it occurs in ciliates....Ch. 24.4 - Prob. 6CCCh. 24.4 - Prob. 7CCCh. 24.4 - Prob. 8CCCh. 24.4 - Prob. 9CCCh. 24.5 - Prob. 1MICh. 24.5 - Compare the morphology of members of the genus...Ch. 24.5 - Prob. 2CCCh. 24 - Prob. 1RCCh. 24 - Prob. 2RCCh. 24 - Prob. 3RCCh. 24 - Prob. 4RCCh. 24 - Prob. 5RCCh. 24 - Prob. 6RCCh. 24 - Protist encystment is usually triggered by changes...Ch. 24 - Vaccine development for diseases caused by...Ch. 24 - Prob. 3ALCh. 24 - Benthic foraminifera inhabit marine sediments. It...Ch. 24 - Prob. 5AL
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- Some non-plant organisms like the protist that spreads malaria contain a non-photosynthetic chloroplast called an apicoplast. Crazy! What best explains how protists have evolved apicoplasts?arrow_forwardWhich of the following structures in chlorarachniophytes provides evidence that they evolved through the endosymbiosis of a green alga by a heterotrophic eukaryote? A. food vacuole B. nucleomorph C. mitosomes D. flagellaarrow_forwardWhat alga does a trypanosome superficially resemble?arrow_forward
- 50) Some protists, formerly united as the ʺamitochondriateʺ clade, have recently been shown to be rather diverse. Some of them possess neither mitochondria nor mitochondrial genes (and have been classified as fungi). Others possess no mitochondria, but do have mitochondrial genes in their nuclear genome. Still others have modified mitochondria (viz. mitosomes or hydrogenosomes). Which statement(s) represent(s) consequences of these recent findings? 1. The amitochondriates do not comprise a true clade. 2. The ʺamitochondriate hypothesisʺ concerning the root of the eukaryotic tree has been strengthened. 3. Just as there is a diversity of cyanobacterial descendants among eukaryotes, so too is there a diversity of alpha-proteobacterial descendants among the eukaryotes. 4. If the amitochondriate organisms continued to be recognized as a taxon, this taxon would be polyphyletic. 5. Horizontal gene transfer involving mitochondrial genes has occurred in some amitochondriate organisms. A) 1 only…arrow_forwardWhat term best describes the following organisms: some with tetramembraneous chloroplasts, some with hairy flagellae, some with pseudopods; some with cuplike indentations in the cell membrane? a) Excavata. b) SAR. c) Plantae. d) Unikonta. The term protista refers to : a) A kingdom within the superkingom SAR. b) A kingdom within the superkingdom Excavata. c) It is a descriptive term or common name for unicellular, colonial, and some multicellular organisms that lack true tissues. d) A phylum within the Kingdom Metazoa. Which term best describes the following organism: a unicellular (single celled) eukaryote that has a single large mitochondrion, and causes Chagas disease or sleeping sickness. a) Hypermastigophora. b) Diplomonada. c) Algae. d) Trypanosoma. e) Rhizopoda. 4. What term best describes the following organism: a multicellular eukaryote with a chitinous cell wall that is an absorptive heterotroph? a) Fungi. b)…arrow_forwardApicomplexans evolved from a photosynthetic ancestor and have the remnant of a chloroplast. This organelle no longer acts in photosynthesis, but remains essential to the protist. Why might targeting this organelle yield an antimalarial drug with minimal side effects in humans?arrow_forward
- The amoeba Pelomyxa palustris is a single-celled eukaryote with nomitochondria, but it contains symbiotic bacteria that can live in thepresence of oxygen. How does this observation support theendosymbiont theory?arrow_forwardIf an ancestral protist was classified as an opisthokont, then what should be true of this protist? -They should also have given rise to the plants. -They should perform heterotrophy by secretion of exoenzymes. -Like diplomonads and parabasalids, they should bear multiple flagella. -They should be parasitic -They should be the common ancestor of the basidiomycetes and animals.arrow_forwardWhat supergroup is Gracilaria in? Is this protist prokaryotic or eukaryotic?arrow_forward
- Why do some biologists describe the mitochondria of diplomonads and parabasalids as “highly reduced”?arrow_forwardChloroplast formation in zygotes of algae?arrow_forwardAccording to the endosymbiotic theory, protoeukaryotes did not have ribosomes until the endosymbiosis with mitochondria was established.arrow_forward
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