Explain why organisms that can survive and/or grow under aerobic conditions need the enzymes catalase and...
Explain why organisms that can survive and/or grow under aerobic conditions need the enzymes catalase and superoxide dismutase.
Homework Answers
Aerotolerant anaerobes do not perform aerobic respiration, they grow in the presence of Oxygen. Peroxidase, superoxide dismutase , and catalase are the main enzymes involved in the detoxification of the reactive oxygen species.
Superoxide dismutase is usually present in the cell that can tolerate oxygen.
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Explain why organisms that can survive and/or grow under aerobic
conditions need the enzymes catalase and...
In aerobic conditions, what would happen to a bacteria that did not contain the enzyme superoxide...
In aerobic conditions, what would happen to a bacteria that did not contain the enzyme superoxide dismutase or catalase
Is it possible a bacterium that can only grow at the bottom of a tube of...
Is it possible a bacterium that can only grow at the bottom of a tube of thioglycolate broth is also oxidase- positive? Why, or why not? Select one: a. Yes, it is absolutely possible. This bacterium is facultative anaerobic, so it uses oxidase to ferment glucose. b. No, it is not possible. It is an obligate anaerobe, and has no reason to have enzymes needed for aerobic respiration. O c. No, it is not possible. It can only use fermentation...
a) Will all gram positive organisms grow on a rose agar plate? ecplain why or why...
a) Will all gram positive organisms grow on a rose agar plate? ecplain why or why not. b) Will all gram negative organisms grow on a MAC agar plate? explain why or why not. c) Can colony morphology be done from a MAC or Rose agar plate? why or why not.
Is it possible a bacterium that can only grow at the bottom of a tube of...
Is it possible a bacterium that can only grow at the bottom of a tube of thioglycolate broth is also oxidase-positive? Why, or why not? Select one: O a. Yes, it is absolutely possible. This bacterium is facultative anaerobic, so it uses oxidase to ferment glucose. O b. No, it is not possible. It is an obligate anaerobe, and has no reason to have enzymes needed for aerobic respiration. O c. No, it is not possible. It can only use...
Question #1: Aerobic organisms use oxygen; where & when do humans "consume" oxygen in the steps...
Question #1: Aerobic organisms use oxygen; where & when do humans "consume" oxygen in the steps of aerobic cellular respiration? Question #2: What are the advantages & disadvantages of glycolysis followed by anaerobic fermentation? Question #3: What is the economic importance of fermentation by yeast Question #4: What gas is responsible for the holes in baked bread? Question #5: What are the two types of fermentation and which is possible in human skeletal muscle under certain conditions? Question #6: Why...
The maximum pressure most organisms can survive is about 1000 times the atmospheric pressure. Only small,...
The maximum pressure most organisms can survive is about 1000 times the atmospheric pressure. Only small, simple organisms such as bacteria can survive such high pressures. What then is the maximum depth at which these organisms can live under the sea (assuming that the density of seawater is 1025 kg/m3)? km
catalase test EXPERIMENT 30 LAB REPORT OBSERVATIONS AND RESULTS Record your observations in the following chart....
catalase test
EXPERIMENT 30 LAB REPORT OBSERVATIONS AND RESULTS Record your observations in the following chart. Bacteria Foaming or No Foaming Catalase Present Absent M. luteus S. aureus S. lactis 1. Review Questions: 1. Explain why the enzyme catalase is essential for the survival of many aerobic and facultative anaerobic organisms? 2. Explain how catalase negative bacteria are capable of growing in the presence of oxygen Experiment 30 Catalase Test 273 3. Can bacterial cultures grown on blood agar be...
37. What does the enzyme catalase do (also see Chapter 6)? a. Detoxifies H.O, created in...
37. What does the enzyme catalase do (also see Chapter 6)? a. Detoxifies H.O, created in the oxidation of flavoprotein in the e' transport chain b. Detoxifies H,O, created by the action of superoxide dismutase c. Allows many aerobic, facultatively anaerobic, and microaerophil microbes to survive d. All of the above 38. What type of media is used in the catalase test (we will use the test tube version, not the slide) a. Agar plate b. Agar slant c. Agar...
If a bacterium is a facultative anaerobe, can it grow on glutamate under anoxic conditions? please...
If a bacterium is a facultative anaerobe, can it grow on glutamate under anoxic conditions? please justify your answer
In general, why do organisms that have high survivorship have low fecundity? In general, organisms have...
In general, why do organisms that have high survivorship have low fecundity? In general, organisms have a finite (i.e., limited) amount of energy that can be used for either promoting survival or promoting reproduction. o Organisms that produce lots of offspring don't need to survive for long periods of time. O Organisms that are capable of surviving long periods of time don't need to produce lots of offspring. This is an adaptation that organisms with high survivorship have acquired.
Is it possible a bacterium that can only grow at the bottom of a tube of thioglycolate broth is also oxidase- positive? Why, or why not? Select one: a. Yes, it is absolutely possible. This bacterium is facultative anaerobic, so it uses oxidase to ferment glucose. b. No, it is not possible. It is an obligate anaerobe, and has no reason to have enzymes needed for aerobic respiration. O c. No, it is not possible. It can only use fermentation...
Is it possible a bacterium that can only grow at the bottom of a tube of thioglycolate broth is also oxidase-positive? Why, or why not? Select one: O a. Yes, it is absolutely possible. This bacterium is facultative anaerobic, so it uses oxidase to ferment glucose. O b. No, it is not possible. It is an obligate anaerobe, and has no reason to have enzymes needed for aerobic respiration. O c. No, it is not possible. It can only use...
Question #1: Aerobic organisms use oxygen; where & when do humans "consume" oxygen in the steps of aerobic cellular respiration? Question #2: What are the advantages & disadvantages of glycolysis followed by anaerobic fermentation? Question #3: What is the economic importance of fermentation by yeast Question #4: What gas is responsible for the holes in baked bread? Question #5: What are the two types of fermentation and which is possible in human skeletal muscle under certain conditions? Question #6: Why...
catalase test
EXPERIMENT 30 LAB REPORT OBSERVATIONS AND RESULTS Record your observations in the following chart. Bacteria Foaming or No Foaming Catalase Present Absent M. luteus S. aureus S. lactis 1. Review Questions: 1. Explain why the enzyme catalase is essential for the survival of many aerobic and facultative anaerobic organisms? 2. Explain how catalase negative bacteria are capable of growing in the presence of oxygen Experiment 30 Catalase Test 273 3. Can bacterial cultures grown on blood agar be...
37. What does the enzyme catalase do (also see Chapter 6)? a. Detoxifies H.O, created in the oxidation of flavoprotein in the e' transport chain b. Detoxifies H,O, created by the action of superoxide dismutase c. Allows many aerobic, facultatively anaerobic, and microaerophil microbes to survive d. All of the above 38. What type of media is used in the catalase test (we will use the test tube version, not the slide) a. Agar plate b. Agar slant c. Agar...
In general, why do organisms that have high survivorship have low fecundity? In general, organisms have a finite (i.e., limited) amount of energy that can be used for either promoting survival or promoting reproduction. o Organisms that produce lots of offspring don't need to survive for long periods of time. O Organisms that are capable of surviving long periods of time don't need to produce lots of offspring. This is an adaptation that organisms with high survivorship have acquired.
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