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choli [55]
3 years ago
10

How does ultraviolet light result in the formation of thymine dimers?

Physics
1 answer:
murzikaleks [220]3 years ago
3 0
Pyrimidine dimers<span> are molecular lesions </span>formed<span> from </span>thymine<span> or cytosine bases in DNA via photochemical reactions. </span>Ultraviolet light<span> induces the </span>formation<span> of covalent linkages by reactions localized on the C=C double bonds. In dsRNA (double-stranded RNA), uracil </span>dimers<span> may also accumulate as a </span>result<span> of </span>UV<span>radiation.</span>
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Answer:

If you try to lift up a weight in a swimming pool and then try to lift the same weight on the edge of the pool, it feels much lighter in the water.

This was supposed to have been first explained by the Greek scientist Archimedes. He said that the water gives an upward force or upthrust on any object in it.

You can weigh an object in air and then in water and actually work out the upthrust, it is the difference between the two readings. For this reason the upthrust is often called the loss in weight of the object.

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3 years ago
A heat engine is a device that uses<br> to produce useful work.
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A heat engine <em>is </em>a device that uses to produce useful work.

Definition - a device for producing motive power from heat, such as a gasoline engine or steam engine.

So..

If this is a true or false question.. Your answer is:

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Hope this helps!

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7 0
3 years ago
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NASA communicates with the Space Shuttle and International Space Station using Ku-band microwave radio. Suppose NASA transmits a
jeyben [28]

Answer:

λ₁ = 2.50 10⁻² m,   λ₂ = 1.66 10⁻² m  

Explanation:

Microwave communication is very efficient because it does not have atmospheric interference, for which it is widely used and has been regulated to avoid interference, the ku band is in the range between 12 and 18 GHz.

Let's calculate the wavelength for the two extreme frequencies of this band

wavelength and frequency are related

         c = λ f

          λ = c / f

f₁ = 12 GHz = 12 10⁹ Hz

          λ₁ = 3 10⁸ /12 10⁹

           λ₁ = 2.50 10⁻² m

f₂ = 18 GHz = 18 10⁹ Hz

          λ₂ = 3 10⁸ /18 10⁹

          λ₂ = 1.66 10⁻² m

Unfortunately in your exercise the specific frequency is not fired, for significant figures they must be the same number as the figures of the frequency, in general the frequency has 3 or 4 significant figures

8 0
4 years ago
Where can you find the neutrons of an atom? in the nucleus with the protons orbiting the nucleus In the nucleus with the electro
cricket20 [7]

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Nuclease is the answer I know

I hope this is the answer

3 0
4 years ago
3. Source 2 demonstrates the division in Congress into two as outlined in which document
Anarel [89]

Answer:

A

Explanation:

the bill of right was the outlined document.

8 0
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