C ell Transport Teachers' notes Lesson objectives Essential Question: How do cells exchange nutrients and waste with their environment? GPS: SB1. a. Explain.

Cell Transport

Teachers' notesLesson objectives

Essential Question: How do cells exchange nutrients and waste with their environment?

GPS: SB1. a. Explain the role of cell organelles for both prokaryotic and eukaryotic cells, including the cell membrane, in maintain homeostasis and cell reproduction.

Topic 2: Transport and Homeostasis

A. The Cell Membrane and Homeostasis 1. If a cell can't adjust and respond to changes in their environment,

then the cell can't survive because it can't maintain homeostasis. 2. Homeostasis is the ability of a cell or organism to maintain stable

internal conditions despite changes in its environment. 3. It is important for a cell to control internal control internal

concentrations of water, vitamins, and other nutrients while eliminating cellular wastes.

4. The functions of the cell membrane are:-protection-support-structure-regulates what materials enter and leave the cell5. The property of the membrane that allows certain materials to pass through the cell while keeping others out is selective

permeability.

Other Important Information:  *The cell membrane is made up of  two layers of lipids called the  lipid bilayer. *Proteins are embedded in the cell membrane to help the cell  function.  

B. Passive Transport 7. The movement of materials into or  out of the cell without energy is  passive transport. (moves from high to low concentration) 8.The three types of passive  transport are diffusion, osmosis, and  facilitated diffusion.

9. Diffusion *is the movement of substances across the cell membrane from and area of high concentration to an area of low concentration. (from more crowded to less crowded) *Particles continue to diffuse into or out of the cell until their  concentration is the same on both sides of the cell membrane.  (equilibrium)

10. Osmosis is the diffusion of WATER.  a.. In a hypertonic solution, the concentration of solute outside  the cell is higher than the concentration in the cytoplasm. (water moves out of the cell and it shrinks or shrivels) b.. In a hypotonic solution, the concentration of solute in the  cytoplasm is higher than that outside the cell. (water moves into the cell causing the cell to swell and   possibly burst) c. In an isotonic solution, there are equal concentrations on both  sides of the membrane. (cell size stays the same)

11. Facilitated Diffusion occurs when a protein embedded in the cell membrane carries a substance across the membrane by diffusion. 

Interactive Concepts in Biochemistry: Cellular Transport

PASSIVE TRANSPORT

Membrane proteins called _______________facilitate the passage of molecules across a membrane.

There are two types of transporters. ________________transporters use _________ energy and

_____________ transporters use energy called ____________ to "drive" the transport.

______________ permease is an example of passive transporter.

Passive transport moves molecules from a ___________ concentration to a __________ concentration.

Glucose permease is a type of transporter that allows molecules to move in __________ directions.

When glucose permease was added to the membrane this caused water to pass in both directions and sugar from a

_____________ concentration to a low concentration.

transporters

Passive no

active ATP

Glucose

higher lower

both

higher

Drag each word to the proper location. Once completed use the eraser to reveal the answer.

transporters

Passive

no

active

ATP Glucose higher

lowerboth higher

Active Transport13. Protein pumps, endocytosis, and exocytosis are all processes that us energy to transport materials into or out of the cell.

14. Active Transport is a process that drives large substances across the cell membrane from a region of low concentration to a region of high concentration. It requires energy!!!

15. Endocytosis is a process in which a cell surrounds and takes in material from its environment. 

16. Exocytosis is a process in which a cell fuses with the cell membrane and releases materials from inside the cell.  

Interactive Concepts in Biochemistry: Cellular Transport

ACTIVE TRANSPORT

Moves a solute from a _________________ concentration to a higher

concentration but must consume ______________ to do this.

lower

ATP

Drag each word to the proper location. Once completed use the eraser to reveal the answer.

lowerATP

Click on a number...then write the definition in the box

Click on the clue, then choose the correct letters to reveal the term