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jek_recluse [69]
3 years ago
8

Which of the following is the best representation of the limiting factors affecting the elk population in this ecosystem?

Biology
1 answer:
erastovalidia [21]3 years ago
7 0

Answer:

Number of wolves, and harshness of winter.

Explanation: I took the test

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For a science fair project, two students decided to repeat the Hershey and Chase experiment, with modifications. They decided to
umka21 [38]

Answer is (E) : Amino acids (and thus proteins) also have nitrogen atoms; thus, the radioactivity would not distinguish between DNA and proteins.

Let me explain you why. Hershey and Chase conducted their experiment to show what is the genetic material that passes from one generation to another generation. Is it protein or DNA? For explaining this, they allowed the virus to grow in the presence of two different radio active elements.

In one set they grew viruses in the presence of P-32 radio-active element  

In another set they grew viruses in the presence of S-35 radio active element.

The reason why they choose these two radio-active element was, phosphorus is present in DNA but not in proteins and similarly sulphur is found in proteins but not DNA.

These viruses were allowed to infect bacteria and the later was observed to be radio-actively labelled with P-32 but not S-35. This clearly showed that DNA is the genetic material which was passed from virus to bacteria.  

Now if you choose Nitrogen for labeling, it won't help you in getting any conclusion since nitrogen is present in both proteins and DNA.

8 0
3 years ago
Where do people in the five boroughs (NYC etc) get their tab water? Please provide reasearch as well.
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Hope this helps

8 0
3 years ago
What is the name for the substance that is chemically changed by an enzyme?
Kazeer [188]

Answer:

A substrate

Explanation:

4 0
1 year ago
Please Help (:
Usimov [2.4K]
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