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Stells [14]
3 years ago
13

The restriction enzymes that cut the bacteriophage DNA cannot cut the bacterial chromosomal DNA. Explain this statement. The bac

teria can cut the viral DNA at its specific restriction site, but they cannot cut their own DNA since bacterial chromosomal DNA has altogether a different DNA sequence than the viral DNA. The bacteria can cut the viral DNA at its specific restriction site but protect their own chromosomal DNA by modifying its bases and blocking the restriction enzyme. The bacteria can cut the viral DNA at its specific restriction site but protect their own chromosomal D
Biology
2 answers:
Crazy boy [7]3 years ago
7 0
"<span>The bacteria can cut the viral DNA at its specific restriction site but protect their own chromosomal DNA by modifying its bases and blocking the restriction enzyme" is the one explanation to the statement given in question. The correct option among all the options that are given in the question is the second option.</span>
Leya [2.2K]3 years ago
5 0

The correct answer is option (B)  The bacteria can cut the viral DNA at its specific restriction site but protect their own chromosomal DNA by modifying its bases and blocking the restriction enzyme.

Restriction enzymes cleave the double stranded DNA at specific points into fragments. Endonucleases cleave the internal or the non-terminal phosphodiester bonds after recognizing specific sequences on the DNA which are often palindromic. To prevent the destruction of its own DNA by the restriction enzymes, a few specific bases are modified in each strand by the addition of the methyl groups. Bacteria prevent their own DNA from being cut by the restriction enzyme through the methylation of the restriction sites. The process is called the restriction modification system found in the bacteria and other prokaryotic organisms.  

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Who are agree on xenotransplantation
valentinak56 [21]

Answer:

The people who agree on xenotransplantation are those who have severe problems such as heart problems and failure of the kidneys. Xenotransplantation, while it is still being experimented with, is a possibly life-saving option for people with these illnesses. Another reason why people agree on Xenotransplantation is that because it could potentially supply us individuals with an unlimited indefinite quantity of things such as cells, tissues, and organs for humans.

8 0
3 years ago
How are the same procesess of mitiosis and meosis simullar to each other?
Veronika [31]

First Answer:

They both begin with similar events like chromosome replication.  However Mitosis involves only one division, while meiosis involves two divisions

Hope this helps a bit!

3 0
2 years ago
What information cannot be studied effectively using human torso models? I. the approximate sizes of organs II. the textures of
V125BC [204]

Answer:

II. the textures of organs

Explanation:

A human torso model is designed to be as accurate as possible so that students/researchers can understand the inner workings of the body. Therefore, the organs have been designed to be the same size of an actual human being of that stature, while also being in the correct position within the body to better understand the interrelationships between the organs. The only thing that is not accurate in these models is the texture of the organs as most are smooth plastic unlike the actual organs.

4 0
3 years ago
In an experiment, a certain colony of bacteria initially has a population of 50,000. A reading is taken every 2 hours, and at th
Iteru [2.4K]

Answer:

1) Recursive definition: p_n = (50,000)3^n

2) At the beginning of the 4th interval

Explanation:

1)

The initial population of the bacteria at time zero is

p_0 = 50,000

Here we are told that the reading is taken every two hours; we call this time interval "n", so

n=2 h

And also, after every time interval n, the number of bacteria has tripled.

This means that when n = 1,

p_1 = 3 p_0

And when n=2,

p_2 = 3 p_1 = 3(3p_0)=9 p_0

Applied recursively, we get

p_n = 3^n p_0

And substituting p0,

p_n = (50,000)3^n (1)

2)

Here we want to find at the beginning of which interval there are

p=1,350,000

bacteria.

This means that we can rewrite eq.(1) as

1,350,000=(50,000)3^n

By simplifying,

27=3^n

Which means that

n=3

However, this means that the number of bacteria is 1,350,000 after 3 time intervals; therefore, at the beginning of the 4th interval.

8 0
3 years ago
This process shown below is necessary for the continuity of life because it allows organisms to tranfer genetic information to n
Olegator [25]

What procces is shown above?

  • <em>D</em><em>N</em><em>A</em><em> </em><em>r</em><em>e</em><em>p</em><em>l</em><em>i</em><em>c</em><em>a</em><em>t</em><em>i</em><em>o</em><em>n</em>

DNA replication is the process where the strands of DNA seperate from each other to form two DNA molecules consisting of one new and one old chain of nucleotides.

8 0
2 years ago
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