microbiology Bunker Hil: × \\ Course: 2018SP CSecure https://digital.wwnorton.co

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microbiology

Bunker Hil: × Course: 2018SP CSecure https://digital.wwnorton.com/7597 Graded Ch 10 Reading Quiz 04/04/18 This is a Multiple Choice question / It is worth 1 point/You have 1 of 1 attempts remainirn 02 Question ( point) v1st attempt Which of the following traits is shared by Escherichia coli and Bacteroides species? Choose one: O A. Both help us digest food. o B. Both produce oxygen o C. Both are Gram-positive bacteria. D. Both produce antibiotics. 3 OF 14 QUESTIONS COMPLETED USER This PC

Explanation / Answer

2. Escherichia coli is a facultative anaerobe while Bacteroides species is anaerobic. E.coli is oxygen tolerant but Bacteroides gets killed in presence of oxygen. So, the statement that both produce oxygen is incorrect.

E.coli and Bacteroides species are Gram negative organisms. So, the statement that both are Gram-positive bacteria is incorrect.

E.coli and Bacteroides species do not produce antibiotics. However, E.coli can produce antibiotics if genetically engineered. So, the statement that both produce antibiotics is incorrect.

E.coli helps in digestion and absorption of food and also it produces vitamin K. Bacteroides species also help in the digestion of food, especially they help in the digestion of plant food. So, the statement that both help us digest food is correct.

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