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5. A microbe that grows best where there is oxygen available but can still grow in regions with no oxygen is known as a(n).. A) aerobe B) microaerophile C) aerotolerant D) facultative anaerobe 6. The TSI agar is not used to inhibit the growth of bacteria, but it is used to detect the ability of bacteria to produce H2S gas and fermentation products. Based on the description, this medium is classified as.. A) none of these are correct B) differential only C) selective only D) selective & differential 7. Organisms with special nutritional needs and are difficult to grow in the laboratory are said to be A) aerotolerant B) halophiles C) barophiles D) fastidious 8. Which of the following ingredients could serve as the nitrogen source in a medium? A) Proteins B) Two of these are correct C) Nucleic acids D) Glucose 9. Periplasmic exoenzymes are typically produced by A) yeast B) Two of these are correct C) Gram-negative bacteria D) Gram-positive bacteria 10. A halophile is an organism that A) can grow in dry conditions B) can grow under radiation C) can grow in high salt concentrations D) can grow under high hydrostatic pressure

          5. A microbe that grows best where there is oxygen available but can still grow in regions with no oxygen is known as a(n)..
A) aerobe B) microaerophile C) aerotolerant D) facultative anaerobe
6. The TSI agar is not used to inhibit the growth of bacteria, but it is used to detect the ability of bacteria to produce H2S gas and fermentation products. Based on the description, this medium is classified as..
A) none of these are correct B) differential only C) selective only D) selective & differential
7. Organisms with special nutritional needs and are difficult to grow in the laboratory are said to be
A) aerotolerant B) halophiles C) barophiles D) fastidious
8. Which of the following ingredients could serve as the nitrogen source in a medium?
A) Proteins B) Two of these are correct C) Nucleic acids D) Glucose
9. Periplasmic exoenzymes are typically produced by
A) yeast B) Two of these are correct C) Gram-negative bacteria D) Gram-positive bacteria
10. A halophile is an organism that
A) can grow in dry conditions B) can grow under radiation C) can grow in high salt concentrations D) can grow under high hydrostatic pressure

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Added by Jack A.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

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Solved by Expert Shyam P

05/06/2022

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Step 1: An organism that grows best where there is oxygen available but can still grow in regions with no oxygen is known as a facultative anaerobe. Show more…

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5. A microbe that grows best where there is oxygen available but can still grow in regions with no oxygen is known as a(n).. A) aerobe B) microaerophile C) aerotolerant D) facultative anaerobe 6. The TSI agar is not used to inhibit the growth of bacteria, but it is used to detect the ability of bacteria to produce H2S gas and fermentation products. Based on the description, this medium is classified as.. A) none of these are correct B) differential only C) selective only D) selective & differential 7. Organisms with special nutritional needs and are difficult to grow in the laboratory are said to be A) aerotolerant B) halophiles C) barophiles D) fastidious 8. Which of the following ingredients could serve as the nitrogen source in a medium? A) Proteins B) Two of these are correct C) Nucleic acids D) Glucose 9. Periplasmic exoenzymes are typically produced by A) yeast B) Two of these are correct C) Gram-negative bacteria D) Gram-positive bacteria 10. A halophile is an organism that A) can grow in dry conditions B) can grow under radiation C) can grow in high salt concentrations D) can grow under high hydrostatic pressure

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Transcript

0:00 Hello.

00:01 So answer of this question it is option d that is facultative anurbies.

00:21 So do you we know that that is what is anaerobes.

00:26 This facultative anaerobes are those organisms that shows better result in the in oxygen's presence but can also show this growth in an aerobic condition.

00:39 An aerobic condition.

00:40 That means absence of oxygen because their enzyme system functions came into stop without the presence of the oxygen.

00:54 The b option it is incorrect because the micro aerophils lives best in the low oxygen profiles only.

01:03 C is incorrect because unlike the facultative ones, aerotolerants are just tolerant to oxygen but they better function in anaerobic.

01:13 Environment.

01:15 The next we have the correct option for this that is option b that is differential only.

01:31 See the selective mediums are those mediums which are selectively only for the growth of certain microorganisms.

01:43 The name itself suggests that is the selective.

01:49 As the tsi argued do not selectively allow growth of the some microorganism and it inhibits the other's growth so it is not a selective medium.

02:01 Differential medium are those medium used to distinguish closely related microorganin which is based on some properties that can be easily distinguished visibly.

02:12 So the tsi medium it is used to select the lactose fermenting bacteria only hence it is a differential medium.

02:22 The next we have the correct option for this option d, that is fastidious.

02:35 The aerotolerant are just tolerant to, they are just tolerant to only oxygen.

02:47 But they better functions in an aerobic environment as they do not require the special nutrients but it is based on the oxygen level...

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