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rusak2 [61]
3 years ago
6

Need help with this question ASAP:

Biology
1 answer:
tatyana61 [14]3 years ago
5 0

Answer:

I am positive the answer is C because I used to study the exact same lesson.

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A different DNA ladder from NEB (Cat #N3200L) comes as 500 uL of a 1000 ug/mL solution and is not pre-mixed with the 6 X DNA loa
JulijaS [17]

Answer:

4 ul Loading Buffer + 19.70 ul dH2O + 0.30 ul DNA Ladder

Load 12 ul on the gel.

Explanation:

DNA Ladder concentration = 1000 ug/ml

1000 ug DNA in 1 ml DNA Ladder solution →    150 ng DNA = 0.15 ug DNA in..... 0.00015 ml = 0.15 ul DNA Ladder solution

6x DNA Loading Buffer → it has to be diluted by an equal volume 6 times (1 ul LB + 1 ul distilled H2O)

An appropriate volume to load on an average agarose gel is 12 ul, so:

2 ul Loading Buffer + 9.85 ul dH2O + 0.15 ul DNA Ladder = 12 ul

But since 0.15 ul is a very small volume and mistakes could be made while measuring it, let's make double:

4 ul Loading Buffer + 19.70 ul dH2O + 0.30 ul DNA Ladder = 24 ul

And load half of that solution (12 ul) on the gel.

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3 years ago
What are enterocoelous and schizocoelous organisms?
Mars2501 [29]
Schizocoely is a process by which some animal embryos develop while splitting the mesodermal embryonic tissue. On the other hand, <span> enterocoelous was formed </span><span>in which the coelom forms from pouches "pinched" off of the digestive tract.</span>
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3 years ago
How has this continued petroleum extraction from selected areas over time likely affected petroleum resources on Earth?
garri49 [273]

Answer:Petroleum, also called crude oil, is a fossil fuel. Like coal and natural gas, petroleum was formed from the remains of ancient marine organisms, such as plants, algae, and bacteria. Over millions of years of intense heat and pressure, these organic remains (fossils) transformed into carbon-rich substances we rely on as raw materials for fuel and a wide variety of products.

Explanation:

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3 years ago
The structure of a chloroplast consists of thylakoid sacs that are stacked together one over the other. How does the arrangement
Tcecarenko [31]

Answer:

vizioner conter nu poltvinh

Explanation:

grandes comer ler coltrantes

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3 years ago
Which of the following statements about kinetic energy is incorrect
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To do the top of stored energy.
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