The TEM is a form of electron microscope in which an image is derived from electrons that have passed through the specimen, in particular one in which the whole image is formed at once rather than by scanning. The specimen is placed in a vacuum.
Answer:
No, they only respond to a signal if they have a receptor that can receive the signal.
Explanation:
Is this true or false?
If so, this is very true.
Broken circuits can produce a strong electric shock and can be very dangerous.
Answer choice B.
Negative feedback is when the system is always returning to the same consistant conditions.
A good example of negative feedback would be body temperature (always returns to normal, despite small flunctuations).
Positive feedback always progresses completely. Like growth (once you grow, you stay that way) & pregnancy (fetus is constantly growing and then undergoes childbirth, a forward process).
Hope that helps!
