Question

Mike, a student in BIO 225, was performing a catalase test and had already set up a positive control with a known catalase positive bacteria, obtaining the expected bubbles when the hydrogen peroxide was added to the control sample. However, before he could perform the test with his unknown test bacteria sample, he spilled the remaining hydrogen peroxide from his lab kit supplies so he used some that he had in his home medicine cabinet. No bubbles were produced

          Mike, a student in BIO 225, was performing a catalase test and had already set up a positive control with a known catalase positive bacteria, obtaining the expected bubbles when the hydrogen peroxide was added to the control sample. However, before he could perform the test with his unknown test bacteria sample, he spilled the remaining hydrogen peroxide from his lab kit supplies so he used some that he had in his home medicine cabinet. No bubbles were produced
        
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Biology for AP Courses
Biology for AP Courses
Julianne Zedalis, John Eggebrecht
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Mike, a student in BIO 225, was performing a catalase test and had already set up a positive control with a known catalase positive bacteria, obtaining the expected bubbles when the hydrogen peroxide was added to the control sample. However, before he could perform the test with his unknown test bacteria sample, he spilled the remaining hydrogen peroxide from his lab kit supplies so he used some that he had in his home medicine cabinet. No bubbles were produced
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Mike, as a student in BIO 225, was performing a catalase test and set up a positive control with a known Catalase Positive bacteria obtaining the expected bubbles when the hydrogen peroxide was added to the bacteria sample. However, before he could perform the test with his unknown test bacteria sample he spilled the remaining Hydrogen Peroxide from his lab kit supplies so he used some that he had in his home medicine cabinet. No bubbles were produced after the addition of the hydrogen peroxide. What explanation of these results would you give Mike? Mike should conduct a test with a known Catalase Positive bacteria using the hydrogen peroxide from his medicine cabinet before interpreting his results. Mike's test bacteria sample is catalase negative. Mike's test bacteria sample is catalase positive. Mike can only use eScience supplied hydrogen peroxide for this catalase test. The term "sticky ends" refers to the sticky/gooey DNA obtained in extraction procedures. True False

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Transcript

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00:01 If we talk about this question then here the option which is correct is mike's test bacteria.
00:10 So mike's test bacteria sample is catalase positive.
00:20 This one is correct.
00:22 Basically since the bubbles were produced when the mike added the hydrogen peroxide from his medicine catalyzed to the bacteria sample, what does it indicate? it indicates the presence of the catalase activity in the bacteria...
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