In the classic experiment conducted by Hershey and Chase, why was the pellet radioactive in the centrifuge tube that contained b
acteria with viruses? A. The bacteria were in the pellet, and many contained the radioactive viral DNA.
B. The bacteria were in the pellet, and they had incorporated radioactive proteins into their cell membranes.
C. The radioactive protein coats of the viruses were in the pellet.
D. The radioactive viruses (coats plus DNA) were in the pellet.
E. The radioactive viruses were in the pellet, and the bacteria were in the supernatant.
<h2>Hershey and Chase conducted a series of experiments in order to prove that DNA is the genetic material.</h2>
Explanation:
In this experiment, sulphur-35 and phosphorous-32 were used to radioactively label protein and DNA respectively. The bacteriophage (viruses that infects the bacteria) were allowed to infect the <em>E. coli </em>and it was found that bacterial pellets contains P-32 in their DNA and not S-35. This indicates suphur is not found in DNA, it is present in protein. This experiments proves that DNA is the genetic material and not protein.
<span>A scientific theory must be testable and capable of being proven false. This is very important for these theories to be dealt with because they become the dependencies when they are applied for the analysis of the concepts and problem solving.</span>
When someone suffers from lower eyelid retraction, it means that their lower eyelid has actually been pulled downward which is an example of a scary face.
Another example is by grabbing your bottom lip with your top teeth. When you do this, your mandible moves in an anterior direction.
Answer:Desde un punto de vista evolutivo y biológico, la función del cerebro como órgano, es ejercer un control centralizado sobre los demás órganos del cuerpo.
