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adoni [48]
3 years ago
9

The Hershey and Chase experiments involved the preparation of two different types of radioactively labeled phage. Which of the f

ollowing best explains why two preparations were required?A. The bacteriophage used in the experiments was a T2 phage.B. It was necessary that each of the two phage components, DNA and protein, be identifiable upon recovery at the end of the experiment.C. Each scientist had his own method for labeling phage, so each conducted the same experiment using a different isotope.D. Establishing the identity of the genetic material required observation of two phage generations.
Biology
1 answer:
Tems11 [23]3 years ago
6 0

Answer:

The correct answer is B.It was necessary that each of the two phage components, DNA and protein, be identifiable upon recovery at the end of the experiment

Explanation:

Hershey and chase in his experiment lebelled the T₂ bacteriophage with radioactive sulfur and radioactive phosphorus separately. Then they infect E.coli with T₂phage and separated phage from bacteria by centrifugation.

Because DNA contains phosphorus not protein, cells infected with phage containing radioactive phosphorous showed radioactivity bacause DNA enters the cell not protein confirming DNA is the genetic material and radioactive sulfur was found in supernatant.

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A .Structurally support the cell 
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8 0
3 years ago
Name the 4 nucleotide bases and how they pair up.
S_A_V [24]

Answer:

Adenine Thymine

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Explanation:

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Help me!! Suppose you must design an experiment to test how a paper airplane's shape affects the distance it will fly. Your plan
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Explanation:

Make a standard, "dart" design paper airplane

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Throw the plane at least four more times. Each time before you throw the plane, make sure it is still in good condition (that the folds and points are still sharp). When you toss it, place your toe on the line and try to launch the plane with a similar amount of force, including gripping it at the same spot.

Once you have a good idea of how far your plane typically flies, change the plane’s shape to increase how much drag it experiences. To do this, cut slits that are about one inch long right where either wing meets the middle ridge. Fold up the cut section on both wings so that each now has a one-inch-wide section at the end of the wing that is folded up, at about a 90-degree angle from the rest of the wing.

Make paper planes that are different sizes and compare how well they fly.

Try making paper planes out of different types of paper, such as printer paper, construction paper and newspaper. Use the same design for each.

Some people like to add paper clips to their paper planes to make them fly better. Try adding a paper clip (or multiple paper clips) to different parts of your paper plane (such as the front, back, middle or wings) and then flying it

I hope i helped

3 0
3 years ago
Read 2 more answers
PLEASE ANSWER 1,2,and 4 I WILL GIVE BRAINLIEST
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I have no clue i never learned this also never learned common core 
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3 years ago
Why is a circulatory system is important in meeting the needs of all cells throught an animals body
Anarel [89]
Provide oxygen to all the cells
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2 years ago
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