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gulaghasi [49]
3 years ago
9

What are the 3 key roles of DNA?

Biology
1 answer:
Lera25 [3.4K]3 years ago
6 0

Answer:The sequence of the nucleotides along the backbone encodes genetic information

Explanation:

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Scientists have identified two major branches of prokaryotic evolution. What was the basis for dividing prokaryotes into two dom
Tresset [83]

Answer:

Genetic evidence like difference in ribosomal sequence.

Explanation:

Earlier archaea were considered in bacteria because of their similar appearance with bacteria. Other than similar appearance they also show other similarities with bacteria like lack of nucleus and membrane-bound organelle, presence of single chromosome, mode of reproduction, etc.

Carl Woese was the scientist who discovered archaea and made a separate domain for archaea. After the sequencing archaeal genome, he found that the gene sequence like rRNA sequence of archaea is not similar to bacteria and eukarya. So by genetic evidence, he divided prokaryotes into two domain bacteria and archaea.

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4 years ago
There are many nutrients important to plant growth. What kind of nutrient comes from water and air?
djverab [1.8K]

Answer:

Three elements, carbon, oxygen and hydrogen, are essential to plant growth and are supplied by air and water.

Explanation:

Plants take up essential elements from the soil through their roots and from the air (mainly consisting of nitrogen and oxygen) through their leaves. Nutrient uptake in the soil is achieved by cation exchange, wherein root hairs pump hydrogen ions (H+) into the soil through proton pumps.

5 0
3 years ago
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Why is there stuff? this is a science question?
Elena L [17]

This is a strange way of asking a question but "stuff" is  made up of things called atoms. EVERYTHING is made up of atoms. In solids, the atoms are tightly compacted together. In liquids, the atoms are sort of close together but move freely. In gasses, the atoms are very spread out. I hope this answers your question, I can't really think of much else to say about this... :D

5 0
3 years ago
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The _____________ is a gel-like fluid that fills plant and animal cells. It holds the organelles in place and gives each cell it
Shtirlitz [24]

Answer:

cytoplasm

Explanation:

The cytoplasm's job is to hold organelles in place and it is a jelly-like substance.

6 0
3 years ago
All organisms are composed of one or more basic units of life is called​
Masja [62]

Answer:

The answer is Cells

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4 years ago
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