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lukranit [14]
3 years ago
7

Earth. 1. A

Biology
1 answer:
iragen [17]3 years ago
3 0

Answer:

b

Explanation:

i have done dis b4

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Pseudomonas aeruginosa is a non-fermenting GNR, it grows on EMB. Which of the following would be true (Circle none, one or many)
Dafna11 [192]

Answer:

The correct answer is a. Pseudomonas aeruginosa would be colorless on EMB

Explanation:

Pseudomonas aeruginosa is a gram-positive bacteria that is rod shape. It shows a few nutritional requirements and can even adapt to those conditions in which the other bacteria can be adapt.

It is non-fermentative bacteria so it does not ferment lactose and other carbohydrates. As EMB agar contains lactose and some dye, therefore, the lactose fermenting bacteria ferment the lactose and show good growth and color change.

But as Pseudomonas aeruginosa is a non-fermentative bacteria it does not ferment lactose and does not show any color and forms a colorless colony. Therefore the correct answer is a.

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sergiy2304 [10]

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if an element has a half-life of 30 million years and there is 12.5% of it remaining in a rock, how old is that rock
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Answer:

The half-life of a substance is the amount of time it takes for half of that substance to decay. However, after two half-lives, half of the half remaining will decay, leaving you with one quarter of the original substance.

So, after 1 million years you will have 50% of the original substance remaining.

And, after 2 million years you will have 25% of the original substance remaining.

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And after 4 million years you will have 6.25% of the original substance remaining.

Explanation:

Hope it helps:)

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