Answer:
The restriction endonucleases in bacteria (b) they provide a defense mechanism against infection by viruses
Explanation:
The restriction endonucleases is a protein that is produced by the bacterias that interacts with the DNA of them and gives protection to the bacterial cell by defending against viruses.
Is important to remember that viruses go into different organisms just with a copy of DNA that wants to replicate inside of them creating more and more copies until it breaks the hosting cell and this is how the infection spreads. This protein restricts (that's the reason of its name) or stops the replication stage of the virus DNA by cutting it into many pieces stopping in this way the spread of the infection and the death of the bacteria.
If you want water to flow out of the tubing piece filled with a 50% solution, the minimum concentration of the solution in the beaker must be more than 50%. This is because, water can only flow out of the tubing piece if the concentration of the water inside the beaker is greater than that of the tubing piece; the water will move from the region of low concentration to the region of high concentration.
Adaptation is not the characteristic of life
