Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Why do most iron-oxidizing bacteria grow at an
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- A chemolithoautotroph is respiring using only iron (Fe3+) and nitrite (NO2-). This bacterium does not consume organic molecules. How does this organism make ATP?arrow_forwardEscherichia Colin and Enterobacter aerogenes show a slant that is partially acidic and partially no-change. What would you expect if the tubes were incubated for 48 hours. Do you think the bacteria would continue to turn the slant acidic? Explain why or why not.arrow_forwardWhat is the effect of pH on microbe's growth? Define halophiles, osmotolerant and barophiles.arrow_forward
- In what phase of the bacterial growth curve do cells die at rapid rates?arrow_forwardIf triclosan is the active agent in antibacterial handsoaps, what group of bacteria can grow freely in your soap dispenser?arrow_forwardif a bacterium lacks cytochrome C oxidase, does that make the bacterium an anaerobe? Explain?arrow_forward
- A bacterial organism is catalase positive and cytochrome oxidase positive. This could suggest that the organism is an obligate aerobe. True or false?arrow_forwardOrganısms that grow at temperatures in excess of 100 C are known as A) O thermophiles ) O extreme halophiles C) O psychrophiles D) O hyperpsychrophiles E) O hyperthermophiles.arrow_forwardWhat is meant when it is said that a bacteria is an obligate anaerobe?arrow_forward
- What are the steps in nitrate reduction as carried outby Pseudomonas species? What is this metabolic processcalled?arrow_forwardFrom what source do bacteria obtain their requirements for mineral elements like Ca, Fe etc. in nutrient broth?arrow_forwardWith regard to gram-negative enterics, what do the letters O, H,and K stand for?arrow_forward
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