EBK BIOLOGY
11th Edition
ISBN: 8220101472069
Author: Byers
Publisher: PEARSON
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Chapter 21, Problem 3FTB
Protist chloroplasts surrounded by four-layer membranes arose evolutionarily through _____, in which an ancestral nonphotosynthetic protist engulfed but did not digest a(n) ___.
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A protist that contains contractile vacuoles most likely lives ______.
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Photosynthetic protists are collectively known as__________; nonphotosynthetic, single-celled protistsare collectively known as _________.
Protists include ____ and _____.
Chapter 21 Solutions
EBK BIOLOGY
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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- Carbon-containing mechanism of plant-like protists occurs in _________NucleusGulletPyrenoidContractile vacuoleUndulating membranearrow_forwardI don't understand this practice bio question: Despite the fact that modern taxonomists have abandoned the Kingdom Protista, the term "protist" persists in the biological literature. Explain the current meaning of the term protist and give several specific examples.arrow_forwardProtists that make up a large proportion of Earth’sphytoplankton include___________ and__________ .The protist group containing the species most likelyto one day be cultivated for biofuel production is__________.arrow_forward
- Why are protists not all grouped together into a single eukaryotic supergroup? Their modes of reproduction are extremely diverse. They do not all possess the same mitochondria structure. They did not all evolve from a shared common ancestor. Their DNA sequence is not identical. They fulfill many different ecological roles. They are found in a variety of habitats.arrow_forwardProtists are the most varied group of organisms that we studied this term. They display unique adaptations in feeding, reproduction, and lifestyle (parasitism, free living, etc) among many others! Discuss protist evolution, including an overview of the major groups, and the breadth of variations that occur within this paraphyletic clade. How did protists lead to the evolution of the rest of life on Earth?arrow_forward50) 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_forward
- 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 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_forwardThe kingdom whose members have a complex cell wall, grainy cytoplasm, and no true nucleus is ___. Protista Fungi Bacteriata Moneraarrow_forward
- Endosymbiosis greatly altered eukaryotes as they acquired organelles. In the red algae shown below, the mitochondria is on left (solid lines), the chloroplast is in the middle (dotted lines), and the nucleus is on the right (dashed lines).arrow_forwardProtists are(a) single-celled eukaryotes.(b) multicellular eukaryotes.(c) single-celled prokaryotes.(d) single-celled akaryote. Please try to break the solutions into as many steps as practically possible and the steps should come one by one and they should be short and crisp and plagiarism-free.arrow_forwardQue Selest the parasite(s) among the following protists: 000 Paramecium Euglena Plasmodium Amoeba «Question 15 of 36 Moving to another question will s Trypanosoma Questiarrow_forward
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