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IrinaK [193]
3 years ago
6

What is one difference between DNA and RNA?

Biology
1 answer:
Andrews [41]3 years ago
3 0
Hey, I believe your answer would be D. Only DNA contains the sugar deoxyribose. This is the answer, because RNA contains sugar ribose, not sugar deoxyribose.
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What does the word Photosynthesis mean?
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A

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release of energy through the breakdown of glucose

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When did Cyanobacteria start producing pure oxygen
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<u>Answer:</u>

Cyanobacteria start producing pure oxygen around 200 million years ago.

<u>Explanation:</u>

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(a) What cell structures best reveal evolutionary unity?
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The correct answer will be-

1. Evolutionary unity-  DNA

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<u>Case I </u>

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The best characterized evolutionary molecule is DNA molecule which took the role of genetic material in past and is passed on to the daughter cells and still is made up of the same components which are a five-carbon sugar, four types of nitrogenous bases and a phosphate group. This DNA molecule is present in almost every organism except for a few viruses.

<u>Case II </u>

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7 0
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Put the following events in the correct order:
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c. Transcription of one DNA strand results in mRNA, which is a complementary copy of the information in the DNA.

a. The mRNA leaves the nucleus and goes to a ribosome open choices for ranking.

b. The building blocks of proteins, are carried to the ribosome by tRNAsAmino acids.

The process of deoxyribonucleic acod starts with replication to transcription and translation.

Replication involves the formation of a complementary base from a old or template DNA Strand this then serve as a template for transcription.

transcription involves the coping of information on the DNA to an intermediate mRNA ( messanger ribonucleic acid) in the nucleus which then move from the nucleus to ribosome in the cytoplasm where translation occurs.

Translation is the conversion of the information on the mRNA to an amino acid with the help of enzyme transferse ribonucleic acid(tRNA).

Hence the arrangement is from C ---- A-----B.

3 0
3 years ago
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