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
Streptococcus bacteria can grow in the presence of oxygen, but they do not make catalase. Explain how...
Streptococcus bacteria can grow in the presence of oxygen, but they do not make catalase. Explain how this can be.
Provide examples of organisms that use different strategies to survive in cold weather and explain why...
Provide examples of organisms that use different strategies to survive in cold weather and explain why you think one might be a better method than the other.
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...
Why is the conversion of pyruvate to lactate necessary for glycolysis under anaerobic conditions? Why is...
Why is the conversion of pyruvate to lactate necessary for glycolysis under anaerobic conditions? Why is there no conversion under aerobic conditions? Please explain in detail.
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...
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...
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