1/13/16 T.O.C: What Are Cells?• Do Now: SUMMATIVE: Write a procedure for testing the

Question: “What is the effect of water temperature on the amount of oxygen dissolved in water”.

Then: Copy Learning Standard and Target 9-11 LS1D

The cell is surrounded by a membrane that separates the interior of the cell from the outside world and determines which substances may enter and which may leave the cell. Learning Target: I can Describe the structure of the cell membrane and how the membrane regulates the flow of materials into and out of the cell.

https://www.youtube.com/watch?v=PedajVADLGw

Oxygen Testing Tools

DRAW A PICTURE OF A CELL

• LABEL THE CELL MEMBRANE

Homework: Define the following:

• Diffusion• Concentration Gradient• Osmosis• Vacuole• Passive Transport• Active Transport• Selectively Permeable

Experimental Design• Hypothesis• Manipulated Variable (Experimental

Set-ups)• Responding Variable• Controlled Variables• Control Set up

These are the goals for your unit on homeostasis

• Understand that all organisms have an internal and external environment and are affected by interactions between these environments.

• Understand that organisms must actively maintain a balance in their internal environment.

• Understand that the interactions of systems that adjust the internal environment result in a dynamic balance called homeostasis

• Recognize that stresses may overwhelm the ability of organisms to maintain their internal environment

Writing a Testable Question

• Define Qualitative and Quantitative• Write 3 qualitative observations about the egg• Write 3 quantitative observations about the

egg

Movement through Membranes

• Animations

Experimental DesignWhat is the effect of changing the external environment on the internal environment?

• Hypothesis• Manipulated Variable (Experimental

Set-ups)• Responding Variable• Controlled Variables• Control Set up

Types of Solutions

98% H2O

2% NaCl

100%H2O

0% NaCl

96% H2O

4% NaCl

Procedure• Use step cards

Egg-speriment Data TableEnvironment Control Mass g Distilled Water

Mass gCorn Syrup g

Day 1 Day 2 Day 1 Day 2 Day 1 Day2

Quantitative Observations

Qualitative ObservationsEnvironment Control Distilled Water Corn Syrup

Day 1 Day 2 Day 1 Day 2 Day 1 Day 2