Why did lenskis microbial broth turn cloudy group of answer...

Why did Lenski's microbial broth turn cloudy? Group of answer choices A new strain of E. coli bloomed after it evolved to feed on citrate when glucose ran out. There was a bacterial bloom from a contaminated colony The colony of E. coli was producing citrate when the glucose ran out The original E. coli colony had evolved to feed on citrate when the glucose ran out

Transcript

0:00 Hello everyone.

00:01 So in this question we have to discuss a little bit about microbiology.

00:06 So as per this question, if an organism is grown in a nutrient rich broth to high turbidity always produces a blue pigment.

00:16 Let's see it like this.

00:18 Let's assume this is our nutrient rich broth test tube having nutrient rich broth.

00:28 This is your nutrient rich broth right all.

00:30 Here entirely like this so when an organism is grown in this nutrient rich broth to high turbidity it produces high turbidity as an high density of your organism it has high density of the organism so when it is grown it produces a blue pigmentation a blue pigmentation is seen like this in the nutrient growth.

01:09 So when a large inoculum is transferred from this nutrient rich broth having the organism to a nutrient -rich agar plate, we have grown the organism over here, now we are transferring it to see the actual bacterial growth to observe it in a petri dish.

01:27 Let's eat like this.

01:29 This is your petri dish.

01:39 We will take our end from a straight wire or a loop we can say we can pick up the inoculum transfer it to here inoculum is transferred here something like this just as it so this was the inoculum it will be spreaded like this okay so when you will observe it it is already grown but if you'll observe it after some time you can appreciate a blue colored pigment it should look something like this.

02:19 Let's see, pigmentation...

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