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ruslelena [56]
3 years ago
12

A substance that can not be broken down into any simpler substances is called?

Biology
1 answer:
stealth61 [152]3 years ago
7 0
A substance that can not be broken down into any simpler substance is called an  element.
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Describe the shape of a spider web observed during an investigation of living and non living things in your backyard is an examp
o-na [289]

Answer:

Qualitative

Explanation:

There's two kinds of observation in the scientific method: quantitative and qualitative.

Quantitative is like physical measurement, actual numbers and such. Such as height, weight, etc.

Qualitative is like color, descriptions, shape etc.

Therefore, I think answer should be Qualitative.

5 0
3 years ago
Hershey and Chase used a DNA-based virus for their work. How might the results have been different if they had used an RNA virus
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Answer:

The correct answer is c.With an RNA virus, radioactive RNA would have been in the final pellet.

Explanation:

Hershey and Chase infected<em> E.coil</em> with bacteriophage which was having DNA as its genetic material. The bacteriophage was labeled with radioactive sulfur and radioactive phosphorus and it was radioactive phosphorus that was found in the bacterial cells or pellet.  

As because DNA contains phosphorus, not protein therefore they it was proved that DNA is the genetic material. Similarly, RNA is also a nucleic acid which is genetic material for many viruses and contains phosphorus.

So if Hershey and chase might have chosen an RNA virus then radioactive RNA would have been present in the pellet. So the correct answer is c.

7 0
3 years ago
Janis tore a ligament in her ankle. Until the injury heals, she is at most risk for which of the following? dislocating bones lo
bulgar [2K]

Answer:

The correct answer is ''dislocating bones.''

Explanation:

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