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vesna_86 [32]
3 years ago
11

Which occurs during transcription?

Physics
2 answers:
ludmilkaskok [199]3 years ago
5 0

D.  mRNA is synthesized from a strand of DNA.


Transcription, hence the root script, means to write. This is the creation of the mRNA "messenger" information.

Sati [7]3 years ago
4 0
<span>It uses DNA as a template to make an RNA molecule. RNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation </span>occurs<span>. It is the transfer of genetic instructions in DNA to messenger RNA (mRNA). </span>During transcription<span>, a strand of mRNA is made that is complementary to a strand of DNA.</span>
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VR of a single movable Pulley is 2,why?​
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Explanation:

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Single movable pulley has 2 VR because in single fixed pulley, load is supported with two segments of the string. It makes the effort distance double of the load distance. {As VR = No.of pulley used or number of rope segments that supports the load.}

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3 years ago
A fat person weighing 80 Kg falls on a concrete floor from 2m. If whole of the mechanical energy is converted into heat energy,
sasho [114]

Answer:

The heat produced is 1568 J

Explanation:

The given parameters are;

The mass of the person, m = 80 kg

The height from which the person falls, h = 2 m

Mechanical Energy, ME = Potential Energy, PE + Kinetic Energy, KE

At the height, from where the person falls, the initial velocity of the person = 0 m/s

Therefore;

The initial kinetic energy, K.E. = 1/2·m·v² = 1/2 × 80 kg × (0 m/s)² = 0 J

From which we have;

The Mechanical Energy, M.E. = The initial Potential Energy, P.E. + 0 J

∴ The Mechanical Energy, M.E. = The initial Potential Energy, P.E.

The initial Potential Energy, P.E. = m·g·h

Where;

m = The mass of the person

g = The acceleration due to gravity ≈ 9.8 m/s²

∴ The initial Potential Energy, P.E. = 80 kg × 9.8 m/s² × 2 m = 1568 J

The Mechanical Energy, M.E. = The initial Potential Energy, P.E. = 1568 J

The whole mechanical energy is converted into heat energy, therefore, we have;

The Mechanical Energy, M.E. = The heat energy = 1568 J

The heat produced = The heat energy = 1568 J.

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2 years ago
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On a Fahrenheit thermometer, the gas becomes 18 degrees warmer.

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6 0
3 years ago
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