Nester's Microbiology: A Human Perspective
9th Edition
ISBN: 9781259709999
Author: Denise G. Anderson Lecturer, Sarah Salm, Deborah Allen
Publisher: McGraw-Hill Education
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Chapter 28, Problem 7MC
Summary Introduction
Introduction:
Nitrogen assimilation is required for the production of amino acids by bacteria and plants. The nitrogen gets into the consumers from the plants for the synthesis of
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The annamox reaction
A) O produces excessive amounts of ammonia
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)O is an alternate mode of fixing nitrogen
D) O None of the above
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Chapter 28 Solutions
Nester's Microbiology: A Human Perspective
Ch. 28 -
1. Describe why a microbial mat has green,...Ch. 28 -
2. How do bacteriocins benefit bacteria in their...Ch. 28 - Prob. 3SACh. 28 - What is the role of genetic databases in...Ch. 28 - Prob. 5SACh. 28 - Prob. 6SACh. 28 - Prob. 7SACh. 28 - Prob. 8SACh. 28 - Give examples of free-living and symbiotic...Ch. 28 - Prob. 10SA
Ch. 28 - Prob. 1MCCh. 28 - Which of the following is false? a) Culture...Ch. 28 -
3. Which of the following pairs that relate to...Ch. 28 - Prob. 4MCCh. 28 - Prob. 5MCCh. 28 - Prob. 6MCCh. 28 - Prob. 7MCCh. 28 -
8. Energy for ecosystems can come from
a)...Ch. 28 -
9. Mycorrhizas represent associations between...Ch. 28 - In symbiotic nitrogen fixation by rhizobia and...Ch. 28 - Prob. 1ACh. 28 - Prob. 2ACh. 28 - Prob. 1CTCh. 28 - Prob. 2CT
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- Microorganisms that require carbon dioxide for growth are called: * A)Psychrophiles B)Capnophiles C)halophiles D)Mesophilesarrow_forwardWhich of the following is often added to wine to inhibit growth of the natural microbial populations on grapes?a) Benzoic acid b) Lactic acid c) Carbon dioxided) Sulfur dioxide e) Oxygenarrow_forward12. Enzymes that can be shut down or activated based on the presence of chemicals in their environment are called a) holoenzymes b) repressed c) constitutive d) regulated 13. An organism with a temperture growth range of 45°C to 60°C would be called afn) a) extremophile b) psychrotroph c) thermoduric d) psychrophile d) thermophile 14. When microbes are in a close nutritional relationship, and one benefits but the other is not harmed it is called a) symbiosis b) satellitism c) commensalism d)mutualism e)synergism 15. The term obligate refers to a) the ability to exist in a wide range of conditions b) existing in a very narrow niche c) using chemicals for energy production d) using oxygen for metabolism 16. The E. coli that normally live in the human large intestines and produce vitamin would best be termed a relationship a) parasitic b) saprobic c) commensal d) mutualistic 17. A holoenzyme is a combination of a protein and a substance called a) apoenzymes bị cofactors c) catalysts…arrow_forward
- Regarding nitrogen fixation, are the following statements True or False? a) Atmospheric nitrogen is reduced to the biologically useful form NH3 (or NH4 ). b) Nitrogen fixation in nature and in the lab requires a metal cofactor or catalyst. c) The availability of fixed nitrogen limits biological productivity. d) Ammonium from the atmosphere is fixed to more usable forms of nitrogen, such as nitrite (NO2–). e) Nitrogen fixation is energetically neutral, using a negligible amount of ATP. f) The enzyme nitrogenase, which takes part in nitrogen fixation, is inactivated by oxygen.arrow_forwardSome marine bacteria, such as Cytophaga species, live and grow well inside fish guts and in waters below freezing temperatures. These bacteria are: a) Halophilic b) Psychrophilic c) Friophilic d) Thermophilic e) Mesophilicarrow_forwardWhen both glucose and lactose are present in the media in which E. coli is growing, which is the preferred carbon source? a)Lactose b)Both Glucose and Lactose c)Xylose d)Glucosearrow_forward
- Strict anaerobes cannot live in the presnece of oxgyen because: a.)they have to mitochondria b.) they cannot absord nutrients from the envioment c.)they cannot make macromolcules d.) they lack detoxifing enzymes e.) they cannot make ATP oragnisms need phosphorous to incoroprate it in their: a.) cell membrane b.) DNA and RNA c.) ATP d.) a and c e.) a, b, and carrow_forwardRequires oxygen at a lower concentration than typically found in air. Question 3 options: a) Obligate aerobe b) Facultative anaerobe c) microaerophile d) None of the abovearrow_forwardWhich is true regarding bacterial and archaea species that use nitrogen and sulfur compounds in different ways? A) O Sulfate-reducing bacteria are those that respire anaerobically using sulfate. B) O Nitrifying bacteria are lithotrophs that produce nitrite and nitrate. C) O Denitrifying bacteria are those that respire anaerobically using various oxidized forms of nitrogen. D) O Sulfur oxidizing bacteria are lithotrophs that obtain energy from sulfur compounds either aerobically or anaerobically E) O All the above are true.arrow_forward
- If an organism feeds on dead or dying organisms that this mode of feeding is called: a) Heterotroph b) Chemoheterotroph c) Chemolithoautroph d) Chemolithoorganotroph e) Saprobicarrow_forwardWhat is one of the main aspects of design for Enhanced Biological Phosphorus Removal (EBPR)? a) keeping nitrate and oxygen out of the anaerobic zone b) allowing fermentation in thr aerobic zone which is then recycled to the anaerobic zone c) PHA conversion to VFA's like acetic acid d) none of the abovearrow_forwardGrowth of microbes in a solid media is identified by the formation of? a) Pellicle at the top of mediab) Coloniesc) Sediment at the bottomd) Turbidityarrow_forward
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