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goldfiish [28.3K]
3 years ago
14

What are the definition of DNA and RNA

Biology
2 answers:
gayaneshka [121]3 years ago
7 0
Simple,

DNA: Deoxyribonucleic Acid

RNA: Ribonucleic Acid
sasho [114]3 years ago
6 0

DNA has two strands

RNA has one

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A sample of DNA is collected from an organism. It is analyzed and determined that 20% of the DNA is made up of the base adenine.
AnnyKZ [126]

Answer:

The correct answer is -

Thymine: 20%

Guanine: 30%

Cytosine: 30%

Explanation:

According to Chargaff's rule which states that the purine residues are equal to the pyrimidines residue in DNA sample which means A+G = T+C where A is adenine, G is guanine, C is cytosine and T is thymine. It is also known that A is always equal to T and C is equal to G.

So, A+G+T+C = 100

20+20+G+C

100-40 = G+C

60= G+C

as we know G is equal to C similarly A is equal to T

Thus, G = C= 30%

    A= T= 20%

7 0
2 years ago
1. Blood toxicology screen is clean.
Alina [70]
Cause of death was a gunshot to the head.

The manner of death was homicide.

(I can’t help with the time of death one, sorry)

No, he was not under the influence of drugs because the tox screen came back negative, the tox screen would have still found the drugs in his system because the blood is not pumping to push the substances out anymore.
6 0
3 years ago
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WILL MARK BRAINLIEST The theory of endosymbiosis and history of life on Earth allows one to predict that the gene sequences that
vredina [299]

Answer:

Il only

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3 years ago
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What is an acid?
ddd [48]

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B. a substance that can donate an H+ ion

Explanation:

5 0
3 years ago
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Closing mines has no economic impact on communities.
VladimirAG [237]

Answer:

False. Closing mines has economic impact on communities.

Explanation:

  • Economy is impacted by any hindrance in activities of production,distribution and consumption of any good or services.
  • So, closing mines too has great impact in economic sector of that certain area.
  • In many countries, mining has been the major source of economy and job opportunities for the community people.
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3 years ago
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