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astraxan [27]
3 years ago
8

Hi, I don’t understand this can someone help? Ill give brainliest.

Biology
2 answers:
weeeeeb [17]3 years ago
8 0
I agree with the other person
elena-s [515]3 years ago
6 0

Answer:

C

Explanation:

I'm honestly not sure, just looks like the right answer

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How would both the results of the hershey–chase experiment and conclusions drawn have been different if the viral dna had been a
Gnesinka [82]

Answer:

The bacterial pellet would have contained both isotopes, making it unclear which substance was the genetic material.

Explanation:

Bacteriophages are viruses that infect bacteria, those of the even T series (T2, T4 and T6). Hershey and Chase work with viruses that attack the enterobacteria Escherichia coli. Bacteriophages consisting of DNA viruses with a protein coat (capsid)

The infection process is that the virus injects its DNA into the bacteria. This viral DNA is inserted into the bacteria's DNA, which begins to make new copies (offspring) of the virus. After 25 minutes of injecting the DNA, the bacteria (host cell) explode, releasing hundreds of new bacteriophages. Since phages have only DNA and proteins, they were the appropriate tool to reveal the chemical nature of the hereditary material.

In 1952, Hershey and Chase designed an experience to find out if the inheritance was communicated by DNA or by proteins. They used radioactive labeling techniques to build two different types of phage populations (both T2). A population of phages grew in a medium containing the radioactive isotope S35. The S35 marks the proteins that contain the amino acids cysteine ​​or methionine and therefore this population contains radioactive proteins and not radioactive DNA, since the DNA does not contain sulfur. The second population of virus grew in a medium containing P32. P32 marks nucleic acids, but not proteins, so that this population contains radioactive DNA and non-radioactive proteins. Both types of viruses were used separately to infect susceptible E. coli cells.

4 0
3 years ago
What is the role of dna polymerase during dna synthesis?
alexandr1967 [171]

                The role of dna polymerase during dna synthesis is that the dna polymerase synthesize the dna molecules during dna synthesis in which they contribute to the formation of dna as it is the way of building the blocks of Dna.

4 0
4 years ago
A student is studying the migration patterns of several birds. She collects the data in the table. HURRYYYYYY I ONLY GOT UNTIL 2
Marta_Voda [28]

Answer:

ur ret4rded

Explanation:

bro ur stu p id this is 4th grader sh1t

4 0
3 years ago
Why do increased temperatures decrease photosystem II activity?
Alex787 [66]

Answer: Options are not given, here are the options.

a.Thylakoid membranes become more permeable to ions

b.The chlorophyll breaks down

c.The peripheral proteins lose their ability to bind to the transmembrane proteins

d.Water cannot bind to PSII to form oxygen

The correct option is C.

The peripheral proteins lose their ability to bind to the transmembrane proteins.

Explanation:

In photosystem 11, it is the center where light is converted to moving electrons. When the chlorophyll molecule absorb light, the electrons gain energy.

Increase temperature affects the activity of photosystem 11 because the peripheral protein lose their ability to bind to the transmembrane protein which is as a result of high temperature affecting the surface of ionic interactions which is for binding to transmembrane protein.

6 0
3 years ago
What type of fats or lipids form animal body fat that is used for stored energy and insulation?
amid [387]

The answer is Saturated Fats

3 0
3 years ago
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