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disa [49]
3 years ago
5

Are there any effective ways of studying for tests?

Biology
1 answer:
lukranit [14]3 years ago
6 0

Answer:

yea they are get a quiet room some calming music no distractions

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6. (3 pts) After transformation, 40 colonies were present on the plate. What is the transformation efficiency of the competent c
natali 33 [55]

Answer:

Given:

Number of colonies on plate = 40

Amount of DNA used for transformation = 100ng

Volume of competent cells used = 100ul

Total volume = 1ml (1000ul)

Volume plated for growth = 200ul

The amount of cells transformed per 1 µg of DNA is called the transformation efficiency

(CFU is colony forming units) => (number of colonies on plate/ng of DNA plated) X 1000 ng/µg = CFU/µg of DNA

Amount of DNA used for plating = 100ng * (200/1000)

                                                      = 100ng * (1/5)

                                                      = 100/5 = 20ng

Efficiency calculation = 40 colonies / 20ng = 2 colonies/ng

               (2 colonies/ng) * (1000 ng/µg) = 2000 CFU/ug DNA

Transformation efficiency = 2000 Transformants / ug DNA

                                          = 2 x 10³ Transformants / ug DNA

Explanation:

Efficiency of transformation is highest in the 100 pg-1 ng range, so Low transformation efficiency could be because of high amount of DNA used for transformation.

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3 years ago
A woman with hemophilla and a ma hemophilla? n without hemophilia are expecting a baby boy. What are the chances that their son
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A zero percent chance that the son will have hemophilia and a 100 percent chance that the son will be a carrier for hemophilia
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3 years ago
Solar cells have many advantages. what is not one of these?
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<span> electricity storage systems readily available. </span>
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You are trying to determine information about the structure of a protein that you have purified. You carry out a series of exper
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if I am not draw molecular weight of the directive functional protein is your answer give thanks to me

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4 years ago
The outcome of protein synthesis is ______.
Rudik [331]

Answer:

C. A protein

Explanation:

The outcome of protein synthesis is <u>a protein.</u>

5 0
2 years ago
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