PRESCOTT'S MICROBIOLOGY
11th Edition
ISBN: 2818440045677
Author: WILLEY
Publisher: MCG
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Chapter 25.7, Problem 4CC
Why do you think members of Microsporidia are still sometimes considered protists? What structure is essential for the germination of a microsporidian spore? Describe its function.
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Is 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 forms
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?
Which of the following processes are involved in thereproduction of protists ?(a) Binary fission and budding(b) Cell fusion and zygote formation(c) Spore formation and cyst formation(d) All of the above
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.
Chapter 25 Solutions
PRESCOTT'S MICROBIOLOGY
Ch. 25.1 - Prob. 1CCCh. 25.1 - What is the distribution of these microbes?Ch. 25.1 - Prob. 3CCCh. 25.1 - Prob. 4CCCh. 25.1 - Prob. 5CCCh. 25.2 - Prob. 1MICh. 25.4 - Prob. 1CCCh. 25.4 - What is the difference between hyphae called...Ch. 25.4 - How do different mating types of Rhizopus...Ch. 25.4 - Prob. 4CC
Ch. 25.4 - Prob. 5CCCh. 25.5 - What determines when a yeast cell can no longer...Ch. 25.5 - In what ways is the life cycle of filamentous...Ch. 25.5 - Why does nutrient deprivation trigger sexual...Ch. 25.5 - Prob. 2CCCh. 25.5 - Where are you most likely find ascomycetes that...Ch. 25.6 - Prob. 1MICh. 25.7 - Prob. 1CCCh. 25.7 - Prob. 2CCCh. 25.7 - Prob. 3CCCh. 25.7 - Why do you think members of Microsporidia are...Ch. 25 - Prob. 1RCCh. 25 - Prob. 2RCCh. 25 - Prob. 3RCCh. 25 - Prob. 4RCCh. 25 - Prob. 5RCCh. 25 - Prob. 1ALCh. 25 - Prob. 2ALCh. 25 - Prob. 3ALCh. 25 - Analysis of sclerotia and conidia formation in the...Ch. 25 - Prob. 5AL
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- What distinguishes protists from prokaryotes? What distinguishes protists from fungi, land plants, and animals?arrow_forwardAfter plasmogamy has occurred, many molds (Mucoromycetes) exist in a heterokaryotic stage for up to centuries at a time. What occurs at the immediate end of this stage? The nuclei fuse in a process called karyogamy. The hyphae fuse in a process called karyogamy. Diploid spores are produced in various spore-producing structures. A haploid zygote is formed that becomes multicellular through repeated rounds of mitosis.arrow_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_forward
- Describe the morphology of oomycetes. Which protists are known for their cytoplasmic streaming movement? Which protists occasionally resemble tiny snails? What are the shells made of? Which group of protists have elaborate exteriors of glassy silica and are very common in the fossil record? What supergroup do land plants share a common ancestor with? What protists are common in tropical waters and are generally called “seaweeds?” Which of the algaes are the furthest living relatives to land plants? Which algaes are the closest living relatives to land plants? Which protists move using tube-like pseudopodia? Which protist group exhibits similarities to fungi as a result of convergent evolution? Which protist group takes on a slug form when nutrients are hard to come by? What protist group do animals share a common ancestor with? What are the choanoflagellates are believed to resemble? Which group contains at least one type of human parasite? Ecology of…arrow_forwardWhat material makes up a large proportion of a diatom’s cell wall? What material makes up a large proportion of a diatom’s cell wall? What are flagella? What purpose do flagella serve? What do euglenoids have instead of a cell wall? What characteristics do plantlike protists share with plants? How do euglenoids obtain food when there isn’t enough light to perform photosynthesis? How do dinoflagellates compare and contrast with euglenoids? How do algae get food to live?arrow_forwardClapter 4. Define and identify properties of biofilms Familiarize yourself with the following structures and what purpose(s) they se o Glycocalyx (both slime layer and capsule) Fimbriae o Flagella, distinguish the different flagella arrangements axial filament sex pili cell wall plasma membrane inclusions ribosomes plasmids nucleoid chromosome o endospores What characteristics distinguish the Domain Archaea and Domain Bacteria? Regarding cellwall hp O o 0 O O 0 0 oarrow_forward
- 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?arrow_forwardA) A major difference between eukaryotic cells and prokaryotic cells is that eukaryotic cells Group of answer choices exhibit little if any compartmentalization of function are generally smaller than prokaryotic cells have a large degree of internal organization lack organelles have little if any internal organization B) Which of the following statements about protists is false? Group of answer choices Some protists are mixotrophic Certain protists share a common ancestor with land plants Some protists are photosynthetic prokaryotes which are similar to the ancestral chloroplast Protists are a polyphyletic group of organisms that often bear little resemblance to each other Although most protists are unicellular, some protists are multicellular as wellarrow_forwardWhat is the role of protist in metabolism?arrow_forward
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