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Yanka [14]
3 years ago
12

What is a unique characteristic of stem cells that makes them important

Biology
1 answer:
sertanlavr [38]3 years ago
4 0

Answer:

Transportation

Explanation:

They can transport substances / nutrients from roots to different parts of the plant which makes the stem important for the plant.

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<h2>A. Keeping a body healthy from disease</h2>

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2 years ago
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The purpose of a hypothesis is: 1. to start a plan to test your idea 2. to provide the answer to your investigation 3. to allow
zimovet [89]

Answer:

3.

Explanation:

As a hypothesis is used as an experiment in order to define the relationship between two variables, and to find the answer(s) to a question while a formalized one forces us to brainstorm about the results in which we should search for in an experiment.

5 0
3 years ago
The cell theory eventually replaced the concept of spontaneous generation as a result of what experimental evidence?
Arisa [49]

<u>Answer:-</u> <em>Option C </em>- evidence that microorganisms cannot grow in boiled broth when new organisms were not allowed to enter.

<u>Explanation:-</u>

  • <em>Theory of spontaneous generation</em> stated that the living organisms can be created from non living matter. However, this theory was disapproved and replaced by the <em>cell theory</em> which stated that all living organisms are created from cells and new cells arise from pre-existing cells.
  • There were several experiments conducted by various scientists to disapprove the theory of spontaneous generation however, the experiment that was most successful to do so was the one conducted by <em>Louis Pasteur</em> in 1859.
  • <em><u>Description of the experiment:-</u></em>

-In his experiment, Pasteur boiled a meat broth in a flask (it was known that boiling the broth kills the micro organisms) and then heated the neck of the flask to bend into a S- shape.

The purpose of the S shaped neck was to allow the air to enter into the flask but not the micro-organisms as the micro organisms will settle by gravity in the neck and not reach into the flask.

<em>observations of the experiment</em> :-

1. Pasteur observed that even though the air entered the flask no micro organisms were growing in the flask.

2. Further,when he tilted the flask so that the broth came in contact with the part of the neck where the air borne microorganisms could have settled he was able to observe microbial growth in the flask.

These observations laid the theory of spontaneous generation to rest and proved that <em>organisms can only grow in the presence of pre-existing cells </em>which in this case were the microorganisms.  

4 0
3 years ago
Which of the following statements is an example of genetic engineering using recombinant DNA?
kolezko [41]
The correct answer is: Inserting a gene into a pea plant to make them resistant to insects
3 0
3 years ago
What are the five causes of environmental problems?
kykrilka [37]

Answer:

Biodiversity. Biodiversity is the most complex and vital feature of our planet. ...

Water. Water pollution is a huge concern for us and our environment. ...

Deforestation. We need plants and trees to survive. ...

Pollution. ...

Climate Change.

Explanation:

6 0
3 years ago
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