Answer:
New cells are naive to the infectious cells who attack it or they are not well prepared to deal with the different scenarios. But, the cells who are attacked before has the set or sequence of the viral or bacterial genome strand been identified by them, which leads to more safety or protection from these foreign bodies.
Explanation:
- Mechanism To attack a host cell:
The viruses and other infectious material enters and attacks the host cell, by breaching its membrane wall and installing or leaving a gene of its own inside the cell. Which then combines with the genome of the cell and it goes through the process of replication, translation etc,along with the host cell machinery. Which then spreads the specific gene strand more in the environment
- <u>Camouflage obtained by the infectious cell to hide it self:</u>
After the genome enters the host cell at first it does not recognizes the strands or foreign cells, as they cover there body with a camouflage sort of membrane and they look more like the body cells.
- <u>Reactions by the host cell and as a whole the body:</u>
The organisms detects the genome of the infections cells or strand, as they store the data about it in its server or database. As if the next time they were under attack then precautions will be there by the host cell to deal with it.
As for the cell who are never attacked before will be less safe to deal with these foreign bodies.
After reading the description attached to the graph represented on the picture, I would say that the resistance gene was present in the aphid population as a result of changes in the aphids’ local habitat by the insecticide. I consider the second option as a correct one because according to the amount of spreading of insecticide<span> per year there was a possibility that it caused a such a change.
Do hope it will help you!</span>
A since the mass is larger therefore larger density
Answer:
As we know enzymes are specific for different reactions and The conditions required by an enzyme to function are also specific. An enzyme which works in a basic environment will not be able to function in a acidic environment.
If the pH for a reaction is increased from 2 to 11 then this change will change the active site of the enzymes. As a result, the substrate will not be able to fit into the enzyme and hence the enzyme will not catalyze the reaction.
