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
The human immune system fights infection by
lesya [120]

Answer;

Antibodies.


The human immune system fights infection by releasing antibodies.


Explanation;

The immune system acts to defend the body against pathogens such as viruses, bacteria and fungi that may cause a disease.

It does so using various types of mechanism, one is by the production of antibodies.

Antibodies are proteins that are produced by the B-cell and are used by the immune system to identify and neutralize pathogens.

These antibodies also activates proteins known as complements which assist in the killing of bacteria, viruses and the infected cells.

4 0
3 years ago
Read 2 more answers
What was a major problem for anthropologists when they were just studying objects in museum collections?
tia_tia [17]

A major problem for anthropologists when they were just studying objects in museum collections was that the objects were viewed as isolated from their cultural context.

<h3>What is Anthropology?</h3>

Anthropology is the scientific study of humans and includes the study of historical and contemporary human species as well as human behavior, biology, cultures, civilizations, and linguistics. While cultural anthropology examines cultural meaning, including norms and values, social anthropology explores patterns of behavior.

Today, the phrase sociocultural anthropology is frequently employed as a portmanteau. Language's impact on social life is the subject of linguistic anthropology. The biological evolution of people is studied in biological or physical anthropology.

Archaeological anthropology, sometimes known as "anthropology of the past," examines physical evidence to study human behavior. In North America and Asia, it is regarded as a subfield of anthropology, but in Europe it is viewed as a field unto itself or categorized under other related fields like paleontology and history.

Learn more about anthropology with the help of the given link:

brainly.com/question/14887941

#SPJ4



5 0
1 year ago
A scientist has chosen to study the motion of clouds in the atmosphere during thunderstorm. Which type of model is most appropri
LenaWriter [7]

Answer:

<em>The correct option is A) computer simulation</em>

Explanation:

Models can be described as as a representation of ideas, events or processes. Models might be mathematical, graphical, visual or computer simulations depending on the type of event being represented.

For studying the motion of clods, a computer simulation will be best because it will make it easier to understand the events related to moving clouds during thunderstorms.

An equation, map or graph cannot be used because neither of them can depict the information for motion of clouds in the atmosphere during a thunderstorm.

8 0
3 years ago
What is respiration and the types of respiration​
MakcuM [25]

Answer:

Hey mate......

Explanation:

This is ur answer.....

<em>Respiration is the process by taking in oxygen and liberating carbon dioxide from the oxidation of complex organic substances.</em>

<em>Three types of respiration include internal, external, and cellular respiration. External respiration is the breathing process. It involves inhalation and exhalation of gases. Internal respiration involves gas exchange between the blood and body cells.</em><em>.</em><em>.</em><em>.</em>

Hope it helps!

Brainliest pls!

Follow me! :)

6 0
3 years ago
If brown eye color is a dominant trait and blue eye color is a recessive trust what can be determined about the eye color
natita [175]

Eye color is much more complicated than is usually taught in high school (or presented in The Tech’s eye color calculator).  There we learn that two genes influence eye color.

One gene comes in two versions, brown (B) and blue (b).  The other gene comes in green (G) and blue (b).  All eye color and inheritance was thought to be explained by this simple model.  Except of course for the fact that it is obviously incomplete.

The model cannot, for example, explain how blue eyed parents can have a brown eyed child.  Yet this can and does happen (although it isn’t common).   

New research shows that the first gene is actually two separate genes, OCA2 and HERC2.  In other words, there are two ways to end up with blue eyes.  

Normally this wouldn’t be enough to explain how blue eyed parents can have a brown eyed child.  Because of how eye color works (see below), if one gene can cause brown eyes, it would dominate over another that causes blue.  In fact, that is what happens with green eyes in the older model.  The brown gene dominates over the green one resulting in brown eyes.

The reason these two genes can explain darker eyed kids with lighter eyed parents is that the two genes need each other to work.  And that the blue versions are broken genes.  Here is what things look like:

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the answer to this question
    15·2 answers
  • Which statement best defines morphology
    15·2 answers
  • What is the function of the Golgi apparatus? It modifies and stores proteins received from the endoplasmic reticulum. It gives t
    8·2 answers
  • Based on the DNA strand here, what is the contemporary: 5’- ACTGACATG -‘3
    12·2 answers
  • List the three principal hormones that regulate glucose metabolism. Explain the effects these molecules have on carbohydrate met
    5·1 answer
  • Two amino acids are shown below.
    9·1 answer
  • Ernest was looking at the following diagram of a cell. Which statement best explains how he should classify the cell?
    15·1 answer
  • What is the difference between a nonliving specimen and one that<br> a<br> you<br> considered dead?
    13·2 answers
  • Osmosis is like diffusion but refers to the movement of
    15·1 answer
  • Please hurry
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!