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The top documents tagged [areas of low concentration]
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Respiration. Sketch the diagram and name the three substances X, Y, Z. Can you identify the organelles shown in the cells?
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Active Transport transport that requires a cell to expend its own energy to pump a molecule across the membrane. Movement of molecules from areas of low
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All organisms are made of cells Cells are mostly liquid. Surrounding the cells is also liquid. *
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Section 4-1 What is homeostasis? Cells maintain homeostasis by controlling the movement of substances across the cell membrane
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DIFFUSION AND OSMOSIS. Types of Cellular Transport Passive Transport cell doesn’t use energy 1. Diffusion 2. Facilitated Diffusion 3. Osmosis Active
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II. The Cell Membrane. A. Cell Membrane Function 1.Transport Proteins are selectively permeable- regulate what materials enter and exit the cell 2.Enzymes
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Cellular Transport. I. General A. Definition = molecules moving across the cell membrane B. Cell Membrane is selectively permeable (lets some things in,
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Chapter 2– The Cell In Action Section 1 – Exchange with the Environment
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Circulatory & Respiratory System Anticipatory Set Prepare whiteboards and materials. When I say, “go,” you will count how many times you feel your pulse
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Diffusion and Osmosis. To remain alive, cells, tissues, and organs must maintain a balance between themselves and the environment. This balance is called
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Homeostasis How everything keeps from blowing up, falling apart, self-destructing, dying from diseases, and, in general, getting along fine from one day
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Biology 3A – membranes. Cells exchange matter and energy In: Out: Processes:
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