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9 July, 19:58

The bacteria grown in Luria broth with only lactose were expected to: Select one: a. Grow much faster than those grown in Luria broth and glucose. b. Mutate at a higher frequency than those grown in luria broth and glucose. c. Search for another carbon source. d. Show marked B-galactosidase activity. e. Show no B-galactosidase activity.

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  1. 9 July, 22:40
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    D. Show marked B-galactosidase activity.

    Explanation: Bacteria are Microorganisms which can be very infectious.

    Luria broth also called luria bertani broth, lysogenic broth are very rich Nutrition where certain Bacteria grow it is used generally for bacterial cultivation and growth, it has been known to support the growth of many bacteria such as Escherichia coli to an optical density of up to 600nm. Industrially, it is widely used for cultivation of Escherichia coli species.
  2. 9 July, 23:54
    0
    Option D is correct

    Explanation:

    Luria broth contains yeast concentrate so it would show a marked B - galactosidase activity which is an enzyme that catalyzes the hydrolysis of B - galactosides including lactose and it is the first step of lactose fermentation.
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