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 3FIB
Protist chloroplasts surrounded by four-layer membranes arose evolutionarily through __________, in which an ancestral nonphtotosynthetic protist engulfed but did not digest a(n) __________.
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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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- In secondary endosymbiosis, the plastid organelle is derived from engulfing Prokaryotic algal cell. an True Falsearrow_forwardAn autotrophic protist, such as a diatom or a dinoflagellate, can evolve into a heterotrophic protist (and therefore a protozoan) simply by losing its chloroplasts. Under what conditions might this take place?arrow_forwardProtists include ____ and _____.arrow_forward
- Is chrysophyta mobile or sessilearrow_forwardThe prtists that causes malaria evolved from a photosynthetic ancestor and has the remnant of a chloroplast. The organelle no longer functions in photosynthesis, but it remains essential to the protist. Why might targeting this organelle yield an antimalarial drug that produces minimal side effects in humans?arrow_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_forward
- Protists Question Detalls Which of the following are examples of protists producers? Amoeba spp. Cyanobacteria spp. (Chlorophyta, or Green Algae) Fucus spp. or Kelp [Phaeophyta, or Brown Algae) ? 0:24 ?? 0:52 1:00 ? ? 1:38 1:46 Paramecium spp. 1 Point Diatoms spp. (Chrysophyta, or Golden Algae) Polysiphonia spp. (Rhodophyta, or Red Algae) 2:43 [0] Submitarrow_forwardStrepto-and Staphylo- are prefixes that describe: Ocell arrangement virulence spore location morphologyarrow_forwardYou are given five test tubes, each containing an unknown protist, and your task is to read the description below and match these five protists that you know to the correct test tube. -Paramecium -Pfiesteria (dinoflagellate) -Navicula (diatom) -Plasmodium -Amoeba In test tube 1, you sketch the organism and come up with a picture that looks like the one below. You note the organism appears to be “eating” the smaller microorganism. Chemical analysis of test tube 2 indicates the presence of a chemical that is toxic to fish and humans. In test tube 3, you detect the presence of substantial amounts of silica. Microscopic analysis of organisms in tube 4 reveals the presence of an apicoplast in the organism Microscopic analysis of the contents in tube 5 reveals the presence of one large macronucleus and several small micronuclei in each organism Match the description with the correct protistarrow_forward
- Help this was wrongarrow_forwardIn the pictures below, identify the arrowed reproductive structures of microscopic cyanobacteria based on the following descriptions: Akinetes are dormant structures larger than the vegetative cells, are rich in food reserves, and have thick walls. Most filamentous cyanobacteria develop akinetes in adverse conditions (e.g., winter, dry periods). When favorable conditions return, they germinate and produce new filaments. Hormogonia are short pieces of filaments consisting of 5–15 trichomes that fragment and develop into new filaments. Heterocytes (or heterocysts) are multicellular structures that have a thick and massive sheath, formed by members of the Nostocales. It is the location of the enzyme nitrogenase for nitrogen fixation, the conversion of nitrogen gas into ammonium and then amino acids. They may be intercalary or terminal in position and may germinate from either end or both the ends to give rise to new filaments. Non-filamentous cyanobacteria generally produce spores…arrow_forwardSome 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_forward
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