1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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.

You might be interested in
Darwin and wallace's theory of evolution by natural selection was revolutionary because it _____.
Lisa [10]
<span>Notice a couple of things different between (A) and (B). It was NOT the first time a biologist proposed that species changed through time (so it's not B). But it finally *solidified* that idea by giving "change through time" (evolution) a MECHANISM. It gave a plausible explanation for WHY species change over time, in a testable way that made sense and had evidence to support it.

So it finally dismissed the idea that species are constant.

It also emphasized that the simple presence of *variation* within a population was a key reason for evolution.

While we're at it ... (C) is wrong because it's not *individuals* that acclimate (adapt) to their environment, but the population (the species) as a whole.

And (D) is wrong because it had nothing to do with economics or the monarchy.</span>
5 0
3 years ago
How do populations survive<br> and reproduce?
Kruka [31]

Answer:

Since individuals in a population differ, certain people in the population are better able to live and reproduce, despite a particular set of conditions. In general, these individuals survive and produce more offspring, thus passing their beneficial traits on to the next generation.

Explanation: hope this helps

3 0
3 years ago
An example of parallel choices in a key is _____.
Anna35 [415]
Flower color is red; AA. flower color is blue
3 0
3 years ago
How many body segments does a silkworm have?<br>a)four<br>b)ten<br>c)thirteen<br>d)sixteen ​
Kazeer [188]

Answer:

11 body segments silkworm have.

4 0
3 years ago
A Biologia Celular, também chamada de Citologia, é a parte da Biologia relacionada com o estudo das células, as estruturas funda
strojnjashka [21]

Answer:B

Explanation:

TENHA UM DIA ABENÇOADO

3 0
3 years ago
Other questions:
  • What is infographic?​
    14·2 answers
  • If a code on a dna molecule for a specific amino acid is cta, what would the messesnger rna codon be?
    10·1 answer
  • Keith is creating notes on invertebrate animals. Help him finish the sentences. The invertebrates belong to the domain Eukarya b
    14·1 answer
  • What is the meaning of abs?
    10·2 answers
  • Loni makes a diagram to help organize what she has learned about the gas laws.
    13·1 answer
  • Why are metals good conductors of electricity but covalent compounds are poor conductors
    8·1 answer
  • Please help me
    13·2 answers
  • List the 4️⃣stages of mitosis. *
    7·1 answer
  • We know our sun is/has
    14·1 answer
  • Jill takes her children to play in the park every afternoon. she notices that since the city changed their landscaping service,
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!