1. Cell Physiology and Cell Transport

2. Bellwork 9/19 Turn in your Homework
You need your Cell Physiology Notes today
Complete the following on your Bellwork from yesterday:
Which macromolecules function as fuel?
Which macromolecules function as long term energy storage?
Which macromolecules hold the genetic information?
Which macromolecules can act as enzymes?
What are the building blocks of starches (polysaccharides)?
What are the building blocks of nucleic acids?
Carbohydrates
Lipids
Nucleic Acids
Proteins
Monosaccharides
Nucleotides

3. Agenda 9/19 Essential Question: Learning Goal:
What are the various parts of the cell and what are their functions?
Correct HW
Review Cell PHysiology
HW: Study for Ch 3 Quiz tomorrow (Use study guide!)
Learning Goal:
Interpret diagrams of a cell and know the function of each structure
Match the ways in which substance move across a cell membrane with a given example.

4. Cell Transport Video What the amoeba sisters video and take notes.

5. What is the plasma membrane?
Carbohydrate Chain
Plasma Membrane
Phospholipid
Fatty Acid Tails
Polar head
Transport Protein

6. Cholesterol – fluidity
Hydropholic/hydrophobic – allows the cell to “reseal” when damaged
Proteins – enzymes, receptors for hormones, binding sites and used for treansport
Microvilli – increases the surface area

7. Movement of substances through the cell membrane.

8. Passive movement of substances through the cell membrane (no cellular energy required)
Diffusion: The process by which molecules or ions scatter or spread spontaneously from regions of high concentration to low concentration.
What happens to the candy when it is placed in water?
Watch this LINK

9. Passive Movement
2.Facilitated diffusion: When molecules such as sugar are too large to pass through the pores of the cell membrane, carrier molecules carry the large molecules from regions of higher to areas of lower concentration. LINK

10. Passive Movement
3. Filtration: Movement of molecules across a membrane as a result of pressure
LINK
Summary

11. 4. Osmosis: A special case of diffusion in which water molecules diffuse from regions of higher concentration to area of lower concentration.
LINK

12. Video https://www.youtube.com/watch?v=nHWUAdkYq4Q

13. Active Mechanisms (Use cellular energy)
Active transport -process that moves particles through membranes regions of lower concentration to regions of higher concentration. animation and quiz

14. ACTIVE TRANSPORT 1. Sodium Potassium Pumps
Uses specific carrier molecules (pumps)
Uses 40% of the cell’s energy
Particles transported include sugars, amino acids, sodium, potassium, calcium and hydrogen ions
amazing students

16. 2. Endocytosis- large particles are brought into a cell through vesicles
a. pinocytosis- cell
takes in liquids
b. phagocytosis- cell
takes in solids
c. receptor mediated
-specific molecules
move into cell
3. Exocytosis- a substance stored in a vesicle is released from the cell Animation

17. Summary
Passive transport- the cell does not expend energy 1. diffusion -movement of molecules -no force 2. osmosis -diffusion of water molecules 3. filtration -filter present -force

18. Summary Active transport- the cell uses energy to move molecules
Cell membrane pumps
- Proteins in the cell membrane
pump ions across the concentration gradient
2. endocytosis
-cell engulfs solids or liquids
3. exocytosis
-cell releases substances

19. Plasma Membrane Summary
Summarize in 3-5 sentences
How do cells transport material into and out of the cell?
Include the following vocabulary words:
Plasma/cell membrane
Selective permeability
Transport proteins
Phospholipid bilayer
Do not add your opinion- JUST FACTS
Passive Transport
Active Transport
Diffusion
Osmosis
Facilitated Diffusion
Endocytosis
Exocytosis

20. Kahoot Review