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bixtya [17]
3 years ago
13

Describe the means by which Hershey and Chase established that only the DNA of a phage enters an E. coli cell. What conclusions

did these scientists draw based on these observations?
Biology
1 answer:
ASHA 777 [7]3 years ago
6 0

Answer:

Harshey and chase labeled T2 bacteriophage with radioactive sulfur and radioactive phosphorus. As DNA contains phosphorus, not protein and protein contain sulfur, not phosphorus, therefore, the presence of radioactivity in cell can determine which is the genetic material .

Then Harshey and Chase infected <em>E.coli</em> with T2 bacteriophage and centrifuged the cell. They found radioactive phosphorus in cell pellet and radioactive sulfur in supernatant.

So by this experiment, they concluded and proved that DNA is the genetic material that gets transfer from one generation to another.

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Because of their increased protein needs, it is unhealthy for athletes to choose to become vegetarians. because of their increas
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Over the past four decades, researchers have identified many types of ______. Examples include growth factor receptors, transcri
Serhud [2]

Over the past four decades, researchers have identified many types of oncogenes, including growth factor receptors, transcription factors, and intracellular signaling proteins.

<h3>What are oncogenes?</h3>

These are specific genes in an organism that can cause the formation of cancer. These genes are prone to defects that when activate, signal for a cell to become a tumor. The genes listed in the question are some examples of the types of cells that can be oncogenes.

Therefore, we can confirm that over the past four decades, researchers have identified many types of oncogenes, including growth factor receptors, transcription factors, and intracellular signaling proteins.

To learn more about oncogenes visit:

brainly.com/question/7310602?referrer=searchResults

6 0
2 years ago
Some strains of Mycobacterium tuberculosis are resistant to so many antibiotics that it has become known as a(n)
timama [110]

Answer:

\huge\boxed{\sf Multidrug\ resistant}

Explanation:

<u>Antibiotics:</u>

"Medicines used against bacteria are called antibiotics."

<u>Example:</u>

Rifampin, isoniazid.

Mycobacterium Tuberculosis is a bacteria.

However, some of its strains are resistant to antibiotics and thus is classified as multidrug resistant (MDR resistant)

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>

3 0
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