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Transcript
CELL MEMBRANE DAY TWO (A) Objective: Today we will compare and contrast the three forms of transport across a cell membrane. Warm Up: Osmosis Worksheet Cell Transport Notes Describe these 3 types of movement across cell membranes. 1. simple diffusion 2. facilitated diffusion 3. active transport Passive transport does _______ require additional energy & moves materials from ________ to _________ concentration. Give 2 examples of passive transport in cells. ___________ diffusion is a type of __________ transport because energy is NOT required. Facilitated diffusion uses _____________ proteins to help move materials from _________ to __________ concentrations. Name 2 materials that move into or out of cells by facilitated diffusion. Name 2 types of transport proteins found in cell membranes. Describe channel proteins. How do carrier proteins help move materials across a cell membrane? Channel proteins have an opening or ___________ through which molecules can passively move by _____________ diffusion. Do all carrier proteins extend across the cell membrane? _____ Explain how these carrier proteins move materials across the membrane. Some carrier proteins can change ________ to move materials across the cell membrane. __________ transport requires additional energy to move materials. Active transport uses cellular energy known as _________. Active transport moves materials AGAINST the concentration gradient or from _________ to ___________ concentration. The _______________ pump is an example of active transport. Moving very large particles out of the cell is called _____________. In exocytosis, wastes are moved out of the cell in ___________ that fuse with the cell membrane. __________ involves moving large particles into the cell. Taking in large liquid droplets is called ____________ or "cell drinking". "Cell eating" is known as ______________. White blood cells engulfing bacteria is an example of _____________. _____________ is the opposite of exocytosis. Transport Mechanism Comparison Worksheet Part One of Gummi Bear Lab (Time Permitting: Chapter 7.3 Worksheet Closing: I will create a chart that compares and contrast the three types of transport I learned about today.