We tend to think of the process of DNA replication as this well laid out stoic process like a factory line. It isn't. The DNA doesn't lie in a straight line for the DNA polymerase to read and it is moving - not static. It is tangled and curved. First understand this is the molecular level. Things don't "think", bacteria don't make decisions, they have no neurons. Everything is a chemical reaction that very often depends on osmotic pressure of one concentration being stronger then another both inside of the cell and outside. Nothing is empty though even at that level there is a lot of "nothing".
Answer:
There are many types of restriction enzymes. Each type is very specific as to where it cuts. They cut along specific base sequences of DNA strands.
Answer:
independent variable: the cd Bart plays
dependent variable: whether Maggie stops crying
hypothesis: if Bart plays Taylor Swift, then Maggie will stop crying.
Answer:
When the propagation of an infectious disease gets reduced, people stop getting their children or themselves getting vaccinated for the infectious disease.
But what we forget is somebody out there might be an asymptomatic carrier of the disease and can spread the disease. As a result, if many people are not vaccinated for the particular disease, then there might be an outbreak of the infectious disease again and it can be deadly.
Answer:
1. There is a small sample of the disease that's being tried to prevent so that the body can get used to fighting it.
2. In the vaccine there is a small sample of a disease that the vaccine is being used to prevent. The white blood cells fight harmful bacteria and so prevent diseases.
3. A vaccine works by training the immune system to fight viruses or bacteria.
4. The antigenic variability of the virus and other viruses and bacteria acts as infective agents.
