Cellular Transport Reading Activity

Directions Get out your notes and title it Cell Membrane Notes Go to Page 50 and Read the first paragraph under the heading: Cell Membrane

Question What is signal transduction?

Directions Read about the General Characteristics of the cell membrane In your notes, write the definition of Semi- Permeable

Question List some words used to describe the cell membrane.

Directions Read the first paragraph of the Cell Membrane Structure In your notes: Draw a phospholipid (head and 2 tails) Draw a small phospholipid bilayer with proteins and carbohydrate chains

Question What three macromolecules make up the cell membrane?

Directions Read the second paragraph of the Cell Membrane Structure In your notes: Write which molecules can pass freely through the cell membrane and why they can do that. Write which molecules cannot pass freely through the cell and why they cannot. Describe cholesterol’s role in the cell membrane

Directions Read the third, fourth and fifth paragraph of the Cell Membrane Structure In your notes: Write the functions of proteins in the cell membrane.

Directions Go to page 58 and read the first paragraph underneath 3.3 Movements Through Cell Membranes In your notes: Make a list of passive forms of transport and active forms of transport Active = __________ Energy Passive = __________ Energy

Directions Read the Section on Diffusion In your notes: Define: Concentration Gradient Equilibrium

Draw Extracellular Fluid Intracellular Fluid (Cytoplasm) Draw a concentration gradient where one side has a higher concentration than the other. Extracellular Fluid Intracellular Fluid (Cytoplasm)

Directions Read the section on facilitated diffusion In your notes: Define: Facilitated Diffusion Facilitated diffusion is similar to simple diffusion in that it only moves molecules from regions of __________ concentration toward regions of ___________ lower concentration. Watch the Video https://www.youtube.com/watch?v=vKGN_Zhz8AY

Directions Read the section on Osmosis In your notes: Define: Write: Isotonic Hypertonic Hypotonic Write: Water moves from hypotonic solutions  Hypertonic solutions (Low solute) (High solute) (Low Water) (High Water)

Draw Draw a concentration gradient where one side has a higher concentration than the other. A B

Which direction will the water flow?

Which direction will the water flow?

Which direction will the water flow?

Directions Read the section on filtration In your notes: Define: Edema

Directions Read the paragraph under Active Mechanisms In your notes: Passive transport = movement from ______ to _____ concentration and _________ require energy. Active transport = movement from ________ to ______ concentrations and ___________ require energy.

Directions Read the section on Active Transport In your notes: Define: How is active transport similar to facilitated diffusion? How is active transport different from facilitated diffusion? Why are protein channels involved in active transport called pumps? Particles that are transported via active transport.

Directions Read the section on Endocytosis and Exocytosis In your notes: Define: Endocytosis Exocytosis Pinocytosis Phagocytosis Receptor mediated endocytosis How is active transport similar to facilitated diffusion? How is active transport different from facilitated diffusion? Why are protein channels involved in active transport called pumps? Particles that are transported via active transport. Watch the Video