PRESCOTT'S MICROBIOLOGY
11th Edition
ISBN: 2818440045677
Author: WILLEY
Publisher: MCG
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Chapter 21.4, Problem 1.3CC
Compare the capacity of green nonsulfur (Chloroflexi) and green sulfur bacteria (Chlorobi) to position themselves in light of optimum wavelength.
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Name the photoreceptor pigment found in halophile bacteria.
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A phycobilin pigment in the red algae efficient in harvesting specific wavelength of light at great depths.
Name the special photoreceptor pigment present in halophiles.
Chapter 21 Solutions
PRESCOTT'S MICROBIOLOGY
Ch. 21.3 - In what ways are members of Aquifex and Thermotoga...Ch. 21.3 - Prob. 2CCCh. 21.3 - Design an experiment designed to explore the role...Ch. 21.3 - Explain the relationship between genome size and...Ch. 21.4 - Which of the phototrophs discussed perform...Ch. 21.4 - Prob. 1.2CCCh. 21.4 - Compare the capacity of green nonsulfur...Ch. 21.4 - Why do you think NH3 is converted to the amino...Ch. 21.4 - Prob. 2.1CCCh. 21.4 - Prob. 2.2CC
Ch. 21.4 - Prob. 2.3CCCh. 21.4 - Describe how a vegetative cell, a heterocyst, and...Ch. 21.4 - Prob. 2.5CCCh. 21.4 - Prob. 2.6CCCh. 21.5 - Prob. 1MICh. 21.5 - Prob. 2MICh. 21.5 - Prob. 1CCCh. 21.5 - Prob. 2CCCh. 21.5 - What might have been some of the culture...Ch. 21.5 - Prob. 4CCCh. 21.5 - Prob. 5CCCh. 21.7 - Prob. 1MICh. 21.8 - Prob. 1CCCh. 21.8 - Prob. 2CCCh. 21.8 - Prob. 3CCCh. 21.8 - Why are cytophagas ecologically important?Ch. 21.8 - Prob. 5CCCh. 21 - Prob. 1RCCh. 21 - Prob. 2RCCh. 21 - Prob. 3RCCh. 21 - Prob. 4RCCh. 21 - Prob. 5RCCh. 21 - Prob. 6RCCh. 21 - Prob. 7RCCh. 21 - The cyanobacterium Anabaena grows well in liquid...Ch. 21 - Compare the structural and functional differences...Ch. 21 - Prob. 3ALCh. 21 - Prob. 4ALCh. 21 - Prob. 5AL
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- Describe the manner in which cell density regulateslight production in luminescent bacteria.arrow_forwardA bacterial cell moving toward light would be an example of O 1) negative chemotaxis. O 2) negative phototaxis. 3) positive chemotaxis. O 4) positive phototaxis. 5) photoequilibriumarrow_forwardDescribe the step by step process of the light reactionsarrow_forward
- An entry in a recent scientific journal reports positive phototaxis in a newly discovered species. What condition could you create in the lab to encourage the growth of these organisms?arrow_forwardMany pelagic Bacteria can use light energy but arenot considered “phototrophs” in the same sense ascyanobacteria or purple bacteria. Explain.arrow_forwardIf algae are exposed to 14CO2 for a brief period while illuminated, the labeled carbon is initially found almost entirely in the carboxyl group of 3-phosphoglycerate. However, if illumination is continued after the label pulse, other carbon atoms become labeled. Explain.arrow_forward
- Describe the role of chlorophylls, bacteriochlorophylls, accessory pigments, reaction-center pigments, and antennae pigments in capturing radiant energy.arrow_forwardThe figure shows stratification of microbial layers in a Winogradsky column (a method used to simulate environments similar to microbial mats observed in nature). Cyanobacteria and algae Nonsulfur photosynthetic bacteria (e.g., Rhodomicrobium) Purple photosynthetic bacteria (e.g., Chromatium) Green photosynthetic bacteria (e.g., Chlorobium) Air Liquid Aerobic zone Microaerophilic zone (Less anaerobic) Anaerobic zone (More anaerobic) Mud mixed with sulfate and carbonate salts and cellulose or other organicsarrow_forwardGive three reasons why endospores are much more resistant to heat than are vegetative cells.arrow_forward
- Define each of the words meaning: chlamydomonas reinhardtii, photoinhibition, photoprotection, stoichiometrically, transgene, chemiluminescence, and chromatogram.arrow_forwardWhy do the reaction centers have different pigments rather than only the chlorophyls? quantitatively increasing the absorption photons narrowing coverage of the visible spectrum light increasing coverage of the visible spectrum light arranging light-harvesting complexe compensating for the high density of chlorophyllarrow_forwardWhat makes chlorophyll an effective photoreceptor? double bonds hydrophilic phytol group single bonds magnesium ion resonancearrow_forward
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