Bissoy.com
Doctors Medicines MCQs Q&A

The restriction endonuclease is having a defence mechanism in the bacterial system against foreign DNA such as viruses. But how it is able to protect its own DNA?

The restriction endonuclease is having a defence mechanism in the bacterial system against foreign DNA such as viruses. But how it is able to protect its own DNA? Correct Answer By methylation of bacterial DNA by restriction enzyme

The bacterial DNA is methylated by restriction enzyme and thus now it is not recognized by the restriction endonuclease. Thus methylation prevents the restriction endonuclease from cutting its own DNA.

Related Questions

Which of the following among item A and item B are correct?
The right of private defence extends, subject to Section 99, to the causing of death of the assailant or aggressor in the following circumstances:
Item A: For defence of body:
1. Against an act which reasonably causes the apprehension of an assault to outrage the modesty
2. Against an act which reasonably causes the apprehension that the assailant will kill his children living in another city
3. Against an act which reasonably causes the apprehension that grievous hurt would otherwise be the consequence
Item B: For defence of property:
1. While the trespasser is engaged in house breaking during day time.
2. Against a thief who reasonably causes the defender to believe that he would lose his property
3. Against a person who commits mischief under such circumstances as may reasonably cause apprehension that grievous Hurt would be a consequence
Select the correct answer:
The following sentences have been given in a jumbled manner. Un-jumble the sentences and answer the option which describes the order of sentences in a correct manner.  A. India's government is in talks with foreign lenders to provide as much as $14.5 billion in credit to millions of its small firms, two officials said, in a sign, the country's banking system may not be robust enough to do the job on its own B. India's micro, small and medium enterprise(MSME) ministry is discussing the proposal to pull in foreign banks with the country's ministry of finance, which will make a final call. C. The push for foreign loans comes on the heels of the Indian government's announcement earlier this month that it plans to borrow about 700 billion rupees by issuing overseas sovereign bonds. D. The government is in discussions with multiple foreign lenders, including Germany's state-owned development bank KfW Group, the World Bank and some Canadian institutions to extend lines of credit to small enterprises E. One official said that the government plans to source up to 1 trillion Indian rupees of loans from foreign institutions because Indian banks were not in a position to provide enough capital for the small business sector, which is seen as critical to job creation.
Seven people A, B, C, D, E, F and G live on separate floors of a 7-floor building. Ground floor is numbered 1, first floor is numbered. 2 and so on until the topmost floor is numbered 7. Each one of these having a different cars-Cadillac, Ambassador, Fiat, Maruti, Mercedes, Bedford and Fargo but not necessarily in the same order. Only three people live above the floor on which A lives. Only one person lives between A and the one having a car Cadillac. F lives immediately below the one having a car Bedford. The one having a car Bedford lives on an even-numbered floor. Only three people live between the ones having a car Cadillac and Maruti. E lives immediately above C. E is not having a car Maruti. Only two people live between B and the one having a car Fargo. The one having a car Fargo lives below the floor on which B lives. The one having a car Fiat does not live immediately above D or immediately below B. D does not live immediately above or immediately below A. G does not have a car Ambassador. Question : How many people live between the floors on which D and the one having a car Bedford ?
In a federal system why a Judiciary is essential ? a. To enterprete the Constitution b. To protect the Fundamental Rights c. To protect the Supremacy of the Constitution d. To protect Democratic system e. To settle disputes between centre and states f. To protect parliamentary system
Viral transduction is the process by which viruses carry bacterial DNA from one bacterial cell to another. In what way does this process play a role in bacterial evolution?
The restriction endonuclease HaeIII recognizes the sequence GG↓CC and the point of cleavage is given by the arrow. If you want to clone a piece of DNA in a plasmid digested by HaeIII, what will be restriction enzyme of choice
S1: As I say, I was born and brought up in an atmosphere of the confluence of three movements, all of which were revolutionary.
P: I was born in a family which had to live its own life, which led me from my young days to seek guidance for my own self-expression in my own inner standard of judgement.
Q: No poet should borrow his medium ready-made from some shop of respectability.
R: But the language which belonged to the people had to be modulated according to the urging which I as an individual had.
S: The medium of expression, doubtless, was my mother tongue.
S6: He should not only have his own seeds but prepare his own soil.

The Proper sequence should be:
Read the passage carefully and choose thebest answer to each question out of the four alternativesand click the button corresponding to it. To know language is to be able to speak it; even a childwho does not yet attend school can speak his or herlanguage. In order to speak a language it is important tolisten to it and to read a few pages in it everyday. A childpicks up language and learns to talk just as (s)he learnsto walk. Walking and talking comes naturally to a child asit grows. In our country, a child may grow up speakingmore than one language, if these languages are spoken inthe home and in the neighbourhood. we call thismultilingualism. A child speaks a language or languagesmuch before (s)he starts going to school. To know alanguage then is first of all to be able to speak it as easilyand naturally as a tree year old child does. Later on thechild will learn to read and write in that language. In orderto read and write in a language, one has to speak it. But itis possible to speak a language but not able to read orwrite in it. A baby does not speak until it is nine monthsold but it understands a few words at six months of age.It has been listening ever since it was born, and even alittle before that. So the first strategy in speaking alanguage is to listen. To know a language one must be able to?
In the given question, a part of the sentence is printed in bold. Below the sentence, three alternatives to the bold part are given which may help improve the sentence. Choose the option that reflects the correct use of the phrase in the context of the sentence. In case the given sentence is correct, your answer is (E) i.e. No correction required. At first glance, it seems implausible that such an intricately engineered bio system such as our could have come about merely as a result of random modifications. i. such an intricately engineered bio system as ours ii. such intricately engineered bio system such as our iii. such intricately engineered bio system such as ours
  In the question below, a passage is given followed by three courses of actions numbered I, II and III. On the basis of the information given, you have to assume everything in the statement to be true, and then decide which of the following suggested courses of actions logically follow(s) for pursuing. Passage: Crores of money is spent on Defence every year. But India has not gone into war since 1999. That was 20 years ago! So, is it 20 years of sustained spending on defence without any real output or necessity? This is nothing but a national wastage- one might be inclined to think. Courses of action: I. The Government must stop spending on Defence altogether. II. The Government must temporarily halt defence spending. III. The Government should employ funds in some other rewarding areas.