Biology 2013. Experiment – when an idea is tested. Independent Variable – measured (time or temp.) Dependent variable – manipulated variable. (WHAT.
7-3 Movement through the Membrane A. The cell membrane is semipermeable - only certain molecules can get through B. Passive transport: no energy required.
Bell work Sandworms are annelid worms that live on the seafloor. They absorb oxygen and excrete wastes through their skin. Which characteristic will best.
The Cell Membrane and Transport. A fluid mosaic with a double layer of phospholipids with embedded proteins. Jobs: Regulates exchange Creates a barrier.
1. How many factors are involved in transporting the goods shown from the manufacturer to a store? 2. What might happen if one of the factors is temporarily.
Homeostasis & Transport Chapter 7 Section 7.3 & 7.4.
Diffusion (passive transport) Diffusion is the process by which molecules move from areas of high concentration to areas of low concentration.
Ch 5 Homeostasis and cell transport
Exchange with the Environment 4 -1
CO 5
