Notes 1 Introduction to Chapter 5 Page 97 With your table: 1) Watch this video.video 2) Answer these questions: a) What is this organism? b) What is the organism doing? c) You know a little about the structure of cell membranes. How is this possible? Standards: CLE Compare different models to explain the movement of materials into and out of the cell. SPI Compare active and passive transport. RLE Recognize the importance of homeostasis as a survival mechanism. Define homeostasis: Macro example: Micro example: a relatively stable state of equilibrium or a tendency toward such a state Homeostasis We maintain a stable body temperature. Cells use the cell membrane to regulate what comes in and out of the cell to keep steady levels of nutrients, water and other substances. Cell Membrane Transport Two main types of cell transport: o Passive: o Active: the movement of substances across a cell membrane without the use of energy. the movement of chemical substances, usually across a cell membrane that requires the use of energy. Cell Energy 1.Energy for the cell is made in the: 2. Energy for the cell is made from: 3. The energy molecule used by the cell is: Mitochondria Glucose (simple sugar) ATP (adenosine triphosphate) Review Homeostasis: Two types of Cell Membrane Transport: Energy molecule: a relatively stable state of equilibrium or a tendency toward such a state Passive - uses no energy; Active - uses energy ATP - made from glucose in the mitochondria is used during active transport.