True. The crust of the Earth has some permanent magnetization, and the Earth's core generates its own magnetic field, sustaining the main part of the field we measure at the surface. So we could say that the Earth is, therefore, a "magnet."
Explanation:
cells have proteins called receptors that bind to signaling molecules and initially I ate a physiological response...because membrane receptors interact with both exteacellar signals molecules within the cell, they permit signaling molecules to affect cell function without actually entering the cell.
Answer:
Sitting down for a meal may also help your brain register that you've consumed a “real meal,” reducing the likelihood you'll overeat during the following meal ( 6 ). Summary: Eating while standing up may increase the speed at which you eat, which could cause you to overeat and consume more calories
Interferon's are the answer.
Interferon's are a group of proteins produced by virus infected cells that help other cells resist viral infection. <span />