All categories

2 years ago

Which of the following is correct about the Hershey chase experiment

Biology

2 answers:

Dima020 [189]2 years ago

5 0

Answer:

The correct answer will be option C (infected bacteria contained tags from the virus DNA).

Explanation:

Alfred Hershey and Martha Chase conducted the experiments to know whether protein or DNA was the genetic material of the cell.

Bacteriophage viruses were grown in 2 mediums containing- radioactive sulfur (³⁵S) and radioactive phosphorus (³²P) and allowed to infect bacterium (E. coli) and then separated them via centrifugation .

They found that bacterial pellet were infected by the ³²P –viruses but not ³⁵S viruses as phosphorus is present in the DNA but absent in proteins which showed that virus transferred its DNA to the bacteria.

Thus, option C is the correct answer.

SSSSS [86.1K]2 years ago

4 0

C.They determined that the infected bacteria contain tags from the virus’s
DNA.
The experiment involved adding in isotopes to label viruses and inserting them into bacteriophages. The Hershey and Chase experiment found the radioactivity sediment IN the bacteria (versus staying behind in the solution) concluding that the DNA had indeed entered the bacteria.

You might be interested in

According to the ipat model, technology that enhances our acquisition of minerals, fossil fuels, timber, and ocean fish ________

Natalka [10]

According to the ipat model, technology that enhances our acquisition of minerals, fossil fuels, timber, and ocean fish increase environmental impact.
IPAT is a model or equation which expresses that
I (stands for Environmental impact) is the product of three factors: P (stands for population), A (is affluence) and T ( for Technology).
IPAT can be written as (I=PAT) or I = pxAxT

8 0

2 years ago

Which of the following pairs a land cover with its most appropriate use? A. Urban land → Human shelter B. Rangeland → Lumber C.

larisa [96]

A. Urban land --> human shelter (APEX)

5 0

2 years ago

Read 2 more answers

Which of the following statement(s) is/are TRUE about Red Blood Cells (RBCs)? a) A normal RBC has a nucleus RBCs' production is

olga_2 [115]

Answer:

RBCs' production is controlled by erythropoietin.

Mature RBCs are released into the bloodstream after approximately seven days RBCs are produced in the bone marrow

Explanation:

The hormone erythropoietin is produced and released in the bloodstream by peritubular interstitial cells of kidneys. The function of erythropoietin is to increase the number of the precursors of red blood cells and thereby to stimulate the production of red blood cells in the bone marrow. When the oxygen supply to body cells is reduced, the hormone erythropoietin stimulates the development of proerythroblasts into reticulocytes and thereby increases the RBC production.

RBCs are produced by the process of erythropoiesis and take about seven days to become mature and to be released in circulation to serve the function of oxygen delivery. The maturation of RBCs also includes the loss of most of the organelles such as the nucleus and mitochondria to accommodate hemoglobin protein. The life span of circulating RBCs is about 100-120 days.

4 0

2 years ago

A ________ zone is the place where two lithospheric plates converge, one riding over the other. Most volcanoes on land occur par

natima [27]

Tha answer is D)

-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-

8 0

2 years ago

Read 2 more answers

What is the primary function of carbohydrates attached to the exterior of cell membranes?

Alekssandra [29.7K]

Answer:

The correct option is : a. Identification of the cell

Explanation:

The cell membrane, also called plasma membrane, is a semi-permeable membrane surrounding the cytoplasm of the cell, that protects and separates the interior of the cells from the external environment.

The carbohydrate layer of the cell membrane is known as the glycocalyx. In eukaryotes, the carbohydrates present on the surface of the cell membrane play a important role in the cell-cell recognition and share information.

7 0

2 years ago