In a multicellular organism, the reproduction of cells is carefully controlled most of the time. Old cells are replaced with new cells and the growth rate is regulated so they do not reproduce too rapidly or too slowly. Which general process does this regulation represent?

What is the next step in the process after a substrate enters the active site of an enzyme

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.

What organ is the first to receive nutrients that have been absorbed from the digestive tract?