What is Osmosis? What is a solution? What is a solvent? What is a solute? Q1 WK9.

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Presentation transcript:

What is Osmosis? What is a solution? What is a solvent? What is a solute? Q1 WK9

What is Osmosis?  Osmosis: the diffusion of water across a semi- permeable membrane  Semi-permeable: allows certain molecules in while keeping others out.

Osmosis Terms:  Hypotonic Solution - One solution has a lower concentration of solute than another.  Hypertonic Solution - one solution has a higher concentration of solute than another.  Isotonic Solution - both solutions have EQUAL concentrations of solute.  Solute = material being dissolved  Solvent = the substance doing the dissolving

What is the Difference Between Diffusion and Osmosis?  Diffusion refers to the movement of any molecules from a high to a low concentration  Osmosis refers only to the movement of water.

Important Dates! Friday 10/30/2015: Grape Lab Report Due Friday 10/30/2015: Microscope and Molecular Transport Exam Q1 WK8 Tuesday 10/27/2015 Agenda: Osmosis Notes: Osmosis and Tonicity Activity: Osmosis Story Board Packet Homework: Osmosis Story Board Packet due Wednesday/Thursday 10/28- 10/29/2015 for 50 Points

Important Dates! Friday 10/30/2015: Grape Lab Report Due Friday 10/30/2015: Microscope and Molecular Transport Exam Q1 WK8 Wednesday/Thursday 10/28-10/29/2015 Agenda: Active Transport Notes: Active Transport vs. Passive Transport Activity: Molecular Transport Station Rotation Homework: Work on Grape Lab Reports

What is Active Transport? Do Now: 1. Name the three types of passive transport that we talked about last week. 2. What is ATP?

Active Transport  Needs energy (ATP)  Goes from LOW CONCENTRATION to HIGH CONCENTRATION  How is this different from passive transport?

 There are a few types of active transport, but all that you really need to know is:  It requires ATP (energy)  It moves in the opposite direction of passive transport!

Friday 10/30/2015 Agenda: Microscope and Molecular Transport Exam GRAPE LAB REPORTS DUE TODAY!!!!! Homework: No Homework this Weekend!!