Cell Membrane Transport Notes

Slides:

Advertisements

Similar presentations

Maintaining Cellular Homeostasis How do organisms regulate their body’s internal environment?

Advertisements

Cell Membrane (Transport) Notes

Chapter 7.3 Cell Transport

Osmosis.  Energy requirements?  No energy required  Modes of passive transport?  Diffusion through cell membrane  The movement of a substance from.

Movement of particles across the cell membrane without using energy

II. Movement of Materials through Cell Membrane. Selectively permeable membrane- AAAAllows some materials to pass and not others.

Cell Membrane Transport. Cell membrane transport There are 2 types of cell membrane transport: Passive Transport Substance move from High concentration.

Chapter 7.3 Cell Transport

Facilitated Diffusion Active Transport

Diffusion The movement of molecules from an area of high concentration to an area of low. concentration.

Types of Transport Review. The movement of particles against the direction of diffusion requiring cell energy. ACTIVE TRANSPORT.

Diffusion (passive transport) Diffusion is the process by which molecules move from areas of high concentration to areas of low concentration.

Getting In & Out of a Cell Osmosis & Diffusion Getting In & Out of a Cell Osmosis & Diffusion.

Cellular Transport Unit 5. Passive Transport  Does not use energy 1. Diffusion Movement of particles from an area of higher concentration to an area.

QOD: How is a receptor different from a recognition protein? LG: Understand how cells maintain homeostasis by explaining how different environmental conditions.

Cell Transport. Diffusion Process by which molecules tend to move from an area of high concentration to low concentration.

Movement of Materials Through The Cell Membrane For a cell to maintain its internal environment, (i.e., achieve homeostasis) it has to be selective in.

Passive vs. Active Transport. Passive Transport Does NOT require energy Moves substances from higher to lower concentration.

Transportation of Molecules. Cellular Transport Carbohydrate Chain Lipid Bilayer.

PASSIVE TRANSPORT One way cells maintain homeostasis is by controlling the movement of substances across their cell membrane. Cells want to reach “equilibrium”.

Cellular Transport: movement of materials in and out of a cell  Homeostasis: combination of two words  Homeo = same  Stasis = steady  Homeostasis:

 Cell transport is the movement of particles and it takes place because cells are trying to maintain balance (homeostasis).

The Cell Membrane Cell Membrane – boundary that separates cells from their environment and controls what moves in and out of the cell.

Anatomy and Physiology Cell Transport. Types of Transport Diffusion Characteristics –Particles move from an area of high concentration to an area of low.

Cellular Transport. Homeostasis All the previous topics discussed are important in maintaining homeostasis. Homeostasis is the ability of the cell to.

Cell Transport. Structure of the Cell Membrane Made of phospholipids and proteins Made of phospholipids and proteins Phospholipids look like a head with.

Transport Across Membranes. The Plasma Membrane A selectively permeable phospholipid bilayer with integrated proteins.

Cell Membrane Transport Notes

Essential Standard Bio.1.2 Analyze the cell as a living system.

7-3 Cell Membrane The cell membrane regulates what enters and leaves the cell It is made of a double layer sheet called a lipid bilayer.

Station 1- Vocabulary Match the terms to their meaning and write down the definition on your review sheet. Vocabulary Term 1.Energy 2.Passive Transport.

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

Cellular Transport Across the Membrane

4.1 Cell Membranes and Transport

Cell Transport.

Structure, Function, and Transport

Passive Transport: Diffusion & Osmosis 3.4

Membrane Transport.

Membrane Transport.

Unit 3 “Movement Through Cell”

Ch. 5 – Homeostasis & Transport

Ch. 7: The Structure & Function of Cells

Cellular Transport Biology 2017.

Types of Transport Across Cell Membranes

Basic Cell Structure The Cell Membrane

Cellular Transport Section 7-4.

Cellular Transport.

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

Plant and Animal Cell Structures

Section Objectives Predict the movement of water and other molecules across selectively permeable membranes. (SPI ) Compare and contrast.

Cellular Physiology TRANSPORT.

Cellular Transportation

BIOLOGY Unit 2 Notes: Cell Membrane Transport

Cell Transport 7.3.

Movement of particles across the cell membrane without using energy

Ch 5 Homeostasis and cell transport

Movement Through a Membrane

Cellular transport How are cells able to control what enters and what leaves the cell while maintaining homeostasis?

Movement through a Cell Membrane

Facilitated Diffusion:

Cell Processes 7th 15.2 Cell Transport.

Cells and Their Environment

Ch. 7-3 Cell Boundaries Notes.

Ch 5 Homeostasis and cell transport

Movement of particles across the cell membrane without using energy

PHAGOCYTOSIS ENDOCYTOSIS EXOCYTOSIS PINOCYTOSIS

Chapter 7 – Cell Structure & Function

Cell Transport Chapter 7, section 3

Academic Biology Notes

Presentation transcript:

Cell Membrane Transport Notes April 24, 2017

I.) Types of Cell Membrane Transport There are 2 types of cell membrane transport: Passive Transport Things flow from High to low Active Transport Low to high

Passive & Active Transport

II.) Passive Transport Diffusion Definition: The movement of particles from areas of high concentration to low concentration http://www.indiana.edu/~phys215/lecture/lecnotes/diff.html http://www.biosci.ohiou.edu/introbioslab/Bios170/diffusion/Diffusion.html

Equilibrium Continuous movement of particles, but no change in concentration When is equilibrium reached when discussing cell membrane transport? When the concentrations of particles are the same on both sides

Facilitated Diffusion Particles flow from high concentration to low concentration but this time they need the help of proteins to get through the cell membrane.

Passive transport (cont.) Osmosis The diffusion of water across a selectively permeable membrane Important in maintaining cell homeostasis Water flows to side of membrane where the water concentration is lower until equilibrium is reached

Osmosis (cont.) Osmosis is controlled by the amount of solutes on either side of a membrane

Remember, this is important, Osmosis deals with what? The movement of particles The movement of glucose The movement of water The movement of lipids 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Osmosis – Types of Solutions When dealing with osmosis, water can either move into the cell or out of it. We describe the solutions that cells are in as either hypotonic, isotonic, or hypertonic. 90% What are the concentrations? 40%

Isotonic Solution Isotonic solution – Concentration of solute is the same in the cell and the area around the cell.

Isotonic solution

Hypotonic Solution Hypotonic Solution – Concentration of solute is lower in the solution than in the cell. Where is water going to move in order to reach equilibrium (Equal concentrations)? Inside the cell

Hypotonic solutions Since water moves into the cell the cell can explode So, Hypotonic solution, low concentration of solute, cell can explode

Plant & animal cells in a hypotonic solution

Hypertonic Solution Hypertonic solution – concentration of solute is higher in the solution than in the cell. Where is water going to move in order to reach equilibrium (Equal concentrations)? Outside the cell

Hypertonic solutions Since water moves out of the cell the cell will shrink So, Hypertonic solution, high concentration of solute, cell will shrink

Plant & animals cells in a Hypertonic Solution

The following diagram demonstrates what type of solution? = solute Hypotonic Isotonic Hypertonic 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

In the following diagram which way is water going to move? = solute Inside the cell Outside of the cell Both 1 and 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

The following diagram demonstrates what type of solution? = solute Hypotonic Isotonic Hypertonic 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

In the following diagram which way is water going to move? = solute Inside the cell Outside of the cell Both 1 and 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Active Transport Molecules move from low concentration to high concentration Requires energy….why?

Other membrane transport activities that require energy Endocytosis Engulfing of large particles or liquids from outside the cell

2 types of Endocytosis Phagocytosis Pinocytosis Engulfing of large particles from outside the cell Pinocytosis Engulfing of liquids from outside the cell

Other membrane transport activities that require energy Exocytosis Release of large particles or liquids from inside the cell Outside the cell Inside the cell

This diagram is an example of what membrane transport? Diffusion Facilitated diffusion Endocytosis Exocytosis 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

This diagram is an example of what membrane transport? Diffusion Facilitated diffusion Endocytosis Exocytosis 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30