When DNA replication occurs, the DNA strand is being unwound, causing the DNA to be overwound tightly past the replication fork.
For example, If you have ever wrapped two strings around each other and then tried to pull part the middle of the string while holding the ends tight, the rest of the string past the place you're pulling the string apart becomes very tight and strained.
Topoisomerase is an enzyme that binds to the DNA and helps release some of that strain by unwinding the DNA past the replication fork.
That means the correct box is the leftmost one. Hope this helps:)
C) Healthy ecosystems is a value of biodiversity, whereas climate change, pollution, and invasive species are not.
The correct answer is letter A, Feces. A doctor must order a fecalysis, a procedure that checks the compounds that are found within the stool. This way the doctor would know if something is wrong with the patient's intestines and other digestive organs.
Answer:
Which of the following terms identifies a singular path for the flow
If I am not wrong, I believe the answer is Producers. The reason as to why I say that producers is the answer is because in every food chain, there needs to be a base. That base is what provides the starting energy that will later on move up in the food chain.
