Prescott's Microbiology
11th Edition
ISBN: 9781260211887
Author: WILLEY, Sandman, Wood
Publisher: McGraw Hill
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Chapter 25, Problem 3AL
Summary Introduction
Neurospora crassa is a red bread mold and it possess a haploid life cycle. It generates ascospores as a product of meiosis. This red mold develop a circadian rhythm, which is a cellular time keeping process that permits temporal organization of behavioral, physiological, and molecular activities in eukaryotes.
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Some fungi can be viewed as coenocytic organisms that exhibit little differentiation. When differentiation does occur, such as in the formation of reproductive structures, it is preceded by septum formation. Why does this occur?
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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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Some fungal species can undergo both sexual and asexual life cycles. During very hot seasons fungi prefer; Select one: a. Asexual reproduction by mitosis, to reduce its genetic diversity b. Asexual reproduction by mitosis to reduce the number of spores c. Asexual reproduction by mitosis to produce diploid cells d. Sexual reproduction by meiosis to produce haploid spores that can resist extreme conditions e. Asexual reproduction by mitosis, as this process needs less energyarrow_forwardFungi tend to reproduce sexually when nutrients are limited or other conditions are unfavorable, but they reproduce asexually in more ideal conditions. Why is this strategy successful? Need referencearrow_forwardAfter a long excursion in the tropics you came back with multiple soil samples from different localities across the Andes. You are interested in discovering new sources of pharmaceuticals and want to test the antibiotic properties of fungi collected from tropical soils at different altitudes. How would you approach this question?. What scientific experiment would you conduct to isolate fungi with antibiotic characteristics?. Please be specific about your design, including your expected outcomes and conclusions from your experiment.arrow_forward
- Place the following events of the SEXUAL lifecycle of a Basidiomycota in chronological order from a spore landing on a substrate through the production of a spore.Basidiospore lands on a substrate Options: plasmogamy, heterokaryotic hyphae/mycelium, meiosis, heterokaryotic fruiting body, karyogamy within a basidium, haploid hyphaearrow_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 fungi exhibit dimorphism, i.e. they can exist in both yeast and mold form. Why is this so? What advantage does this provide for these organisms?arrow_forward
- When the Ascomycetes fungus reproduces sexually, mating type A fungi cross fertilize mating type a fungi. The resulting zygotes undergo meiotic and then mitotic division to produce asci with eight ascospores. The ascospores in the asci are ordered and reflect the position of the parental nuclei in the zygote. Use the passage to answer the question. How is the life cycle of Ascomycetes different from that of humans? A. Haploid cells undergo meiosis. B. Haploid cells undergo mitosis. C. Diploid cells undergo meiosis. D. Diploid cells undergo mitosis.arrow_forwardSince dimorphism is a property of fungi, how do you account for thefact that molds grow preferentially in vitro rather than in vivo?arrow_forwardThe Ascomycetes are the largest and most diverse group of fungi. They live in diverse habitats and even include unicellular species know as yeast. Below is a picture of yeasts cells using a SEM. What structure of the yeast cells in the picture is very conspicuous (you may want to read about yeast in our text p. 610)? O bud scar O chlorophyll O daughter cells O meiotic spores MacBcarrow_forward
- Yeast are unicellular fungi that reproduce by budding (Fig. 8.4.). Identify individual yeast cells and locate a budding cellarrow_forwardRead these two statements about plant-fungal interactions, then pick the statement below that is TRUE. (A) Root fungi in phylum Ascomycota can cause plants to produce antioxidants that provide protection against the stress of drought, and plants feed carbon to the fungi in their roots. (B) Root fungi and plants have evolved mutual benefits through a long history of interaction, in which fungi that provided the greatest benefits to plants had the highest fitness because of the carbon the plants fed them, and plants that supported fungi had the highest fitness because of the protection provided by the fungi. (A) is a proximate cause for plant-fungal symbiosis, whereas (B) is an ultimate cause. O (A) is an ultimate cause for plant-fungal symbiosis, whereas (B) is a proximate cause. Understanding plant-fungal interactions would NOT require cost-benefit analysis because there are no fitness trade-offs. (A) is an innate behavior and (B) is a learned behavior. O O O Oarrow_forwardBoth Ascomycetes and Basidiomycetes form ectomycorrhizal associations with plants. Another group of fungi, the Glomeromycota, form endomycorrhizal partnerships. Which answer below best describes the two pictures seen here? (Hint: mycorrhizae stain reddish-purple!) Picture A 400x (c.s.) Picture B 400x (c.s.) O Picture A is an endo- while Picture B is an ecto-mycorrhizal view O Picture A is an ecto- while Picture B is an endo-mycorrhizal viewarrow_forward
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