1. Science Starter Pick up the Cell City Analogy Warm Up Sheet
Read through the description of the city and do your best to assign each organelle to one of the underlined words
You will have 7 minutes to complete this!
Take out last nights homework for a quick check

2. Today’s Agenda Science Starter Organelle Review Cell Lab (Quick!)
Cell Membrane Transport
Exit Quiz

3. Understand the Structure of Cells and the Function of Organelles
Objective 2.1a
Understand the Structure of Cells and the Function of Organelles

4. Mitochondria

5. Ribosomes

6. Nucleus

7. Endoplasmic Reticulum

8. Golgi Apparatus

9. Protein

10. Cell Membrane (Plasma)

11. Lysosomes (Peroxisomes)

12. Nucleolus

13. Human Cheek Cell Lab
We are going to visualize our own cells to see the true structure!
Every group will need the following:
Microscope
Glass Slide and Coverslip
Toothpick and Kleenex
Before we start touching things a couple notes:
Microscope use
Methylene Blue
Clean up

14. Human Cheek Cells
Low Power
High Power

15. Describe the Types and Importance of Cell Transport
Objective 2.1b
Describe the Types and Importance of Cell Transport

16. CELL MEMBRANE TRANSPORT
Anatomy & Physiology

17. The Cell Membrane
Semi-permeable (controls what can enter and leave the cell
Helps the cell maintain homeostasis
Made up of a double lipid layer

18. Plasma Membrane Proteins
Functions of the proteins in membrane
Composition varies widely among cell types
channels
transporters
receptors
intracellular junctions
enzymes
cytoskeleton anchors
cell identity markers
Transport
Enzyme
Receptor
Anchor
Cell Recognition
Cell Joining

19. 2 Types of Cell Membrane Transport
PASSIVE TRANSPORT
REQURIES NO ENERGY
MOLECULES MOVE FROM A HIGH TO LOW CONCENTRATION
TYPES:
DIFFUSION
FACILITATED DIFFUSION
OSMOSIS
ACTIVE TRANSPORT
REQURIES ENERGY (ATP)
MOLECULES MOVE FROM A LOW TO HIGH CONCENTRATION
Ex: solute pumping and bulk transport

20. Osmosis – Isotonic Solution
Example 1: Equal movement of water in and out of cells
*the cell shape stays the same
See page 45

21. Osmosis – Hypotonic Solution
Example 2: More water moving into cells than is moving out
*the cell will swell or grow larger
See page 45

22. Osmosis – Hypertonic Solution
Example 3: More water moving out of cells than is moving in
*the cell will shrink or get smaller
See page 45
Take the Section 1.3 Quiz

23. Endocytosis Cell transports molecules (such as proteins) into the cell
Pinocytosis
Phagocytosis
Cell transports molecules (such as proteins) into the cell 
Receptor-mediated endocytosis →

24. Exit Quiz
What is the MAIN difference between active and passive transport?
What are the types of passive transport?
What are the types of active transport?

25. Plasma Membrane Junctions
Tight Junctions: Impermeable junctions that encircle adjacent cells.
Desmosomes: Anchoring junctions between cells.
Gap Junctions: Communicating junctions that allow substance to pass from one cell to another.

26. DIFFUSION (PASSIVE TRANSPORT)
Diffusion is the movement of particles from a high concentration to an area of low concentration.
The smell of fresh baked cookies “spreading” throughout the room is an example of diffusion.

27. FACILITATED DIFFUSION (PASSIVE TRANSPORT)
Diffusion of molecules through membrane channels with the help of proteins in the cell membrane

28. OSMOSIS (PASSIVE TRANSPORT)
Osmosis is the diffusion of water through a semi-permeable membrane.
Osmosis occurs when water particles move from a high concentration to a low concentration.
Osmosis is how the cell gains and loses its needed water.

29. Active Transport – Solute Pumping
ATP energy indirectly to move substances
ATP energy drives an ion pump to create a concentration gradient; then a carrier protein uses the energy of the concentration gradient to “drag” or “push” transport of another substance(s) by facilitated transport
A Na+ ion and a glucose bind to the symport, then the symport transports the glucose and Na+ ion inside the cell.

30. Bulk Transport Exocytosis
The transfer of large molecules and fluids across membranes via vesicles using ATP energy. This type of transport mechanism includes exocytosis and endocytosis.
Exocytosis