Bell Ringer: 10/25/17 Objective: Explain the mechanisms of passive transport. Questions: Complete bottom ten questions of yesterday’s worksheet.

Slides:

Advertisements

Similar presentations

Cellular Transport.

Advertisements

Movement through Cells

Passive and Active Transport

Movement of materials through the cell membrane Passive Transport: materials move across the cell membrane by diffusion Diffusion can cause a cell to expand.

Movement of particles across the cell membrane without using energy

All organisms are made of cells Cells are mostly liquid. Surrounding the cells is also liquid. Inside Cell Cell membrane.

Cellular Transport 7.4. Diffusion Baking cookies aroma Baking cookies aroma Particles in G, L, S are in constant motion Particles in G, L, S are in constant.

CH 5 - P HOMEOSTASIS AND CELL TRANSPORT. OBJECTIVES 1. Explain how an equilibrium is established as a result of diffusion. 2. Distinguish between.

Cell Transport Osmosis and Diffusion.  Particles in constant motion  Run into each other and randomly spread out  Particles move from an area of high.

Chapter 4. Transport Across the Cell Membrane  Substances need to move into and out of the cell in order to maintain homeostasis  They can do this by.

PASSIVE TRANSPORT Movement of molecules across a membrane that requires no energy and always occurs down a concentration gradient Types of passive transport.

CELLULAR TRANSPORT. PASSIVE AND ACTIVE TRANSPORT REVIEW Doesn’t require energy inputs Solutes diffuse through a channel inside the protein’s interior.

TRANSPORT THROUGH CELL MEMBRANES Diffusion and Osmosis.

Chapter 7.3: Cell Transport

Unit 4, Lesson 2 Passive Transport. Passive Transport is the movement of molecules across a membrane that does not require energy No energy is required.

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.

Materials move across membranes because of concentration differences.

Lab 6 Diffusion/osmosis.

Bell Work! 1. Why are vacuoles important to PLANTS?

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

Cell Structure Revision. Cell Membrane Introduction The cell membrane: The cell membrane: –surrounds the outside of the cell. –is semi-permeable (allows.

Monday, October 12 th What are some materials that you think a cell needs to obtain to fuel the processes that support life?

PASSIVE TRANSPORT This lesson meets the following DoE Specific Curriculum Outcome for Biology 11: 314-1, 314-3,

Cellular Transport Yeast cells stained with fluorescent dye

Cell Transport Chapter 7.3.

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.

CELL TRANSPORT CONT pp

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

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

Ch.7-3 I Passive Transport Mechanisms

Osmosis, Diffusion, Active Transport

Facilitated Diffusion

Diffusion and Osmosis.

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

Movement across the Plasma Membrane

Types of Transport Across Cell Membranes

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

Passive Transport.

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

Cells Maintaining Homeostasis

The student is expected to: 4B investigate and explain cellular processes, including homeostasis, energy conversions, transport of molecules, and synthesis.

Transport through the Cell Membrane

Cellular Transportation

BIOLOGY Unit 2 Notes: Cell Membrane Transport

Cell Transport 7.3.

Movement of particles across the cell membrane without using energy

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

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

The student is expected to: 4B investigate and explain cellular processes, including homeostasis, energy conversions, transport of molecules, and synthesis.

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

Cellular Transport 7.4.

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

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

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

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

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

Movement of particles across the cell membrane without using energy

Transport through cell membranes

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

Osmosis, Diffusion, Active Transport

Chapter 7 Cellular Structure and Function

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

Osmosis, Diffusion, and Facilitated Diffusion

Passive Transport Unit 2 Cytology.

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

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

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

Movement of particles across the cell membrane without using energy

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

Presentation transcript:

Bell Ringer: 10/25/17 Objective: Explain the mechanisms of passive transport. Questions: Complete bottom ten questions of yesterday’s worksheet.

Channels allowing certain molecules through that are too large to go straight through the cell membrane.

Passive Transport Does not use energy (ATP) Solutes move through a channel on the inside of a protein Net movement is down the concentration gradient (high → low) What does solute mean? (thing be dissolved)

Types of Passive Transport Diffusion Osmosis Facilitated Diffusion High conc. → low conc. with the help of a protein channel

Passive Transport of Glucose PROTEIN Solute (glucose) high low

A drop of dye enters a bowl of water. What happens? Why? What factors impact the reaction?

Cell Transport & Diffusion Movement from high concentration to low concentration Substances diffuse independently of each other Other key terms: Brownian Motion Constant random motion of molecules Dynamic Equilibrium Continuing movement of molecules with NO overall/net change in diffusion

Factors Affecting Diffusion Rate Steepness of concentration gradient Steeper gradient, faster diffusion Molecular size Smaller molecules, faster diffusion Temperature Higher temperature, faster diffusion

Diffusion Experiment

Osmosis Net movement of water from high → low Between two regions separated by a selectively permeable membrane Blue Dot = Solute Red dot = H20

Water Concentration Gradient Water concentration gradient means the number of water molecules on one side of the membrane is different than the number of molecules on the other side of the membrane.

semipermeable membrane between two compartments water molecule protein molecule

Solute concentrations effect osmosis: The membrane side with the most solute particles has the lower water concentration.

Differences in Concentration When two fluids on opposing sides of a membrane differ in solute concentration… Hypotonic solution More water Less solutes Hypertonic solution Less water More solutes Isotonic solution Same water Same solute

2% sucrose solution 10% sucrose solution 2% sucrose solution distilled water Hypotonic Conditions Hypertonic Conditions Isotonic Conditions

What happens when a cell cannot contain an excessive inflow of water? Cytolysis-> the process that occurs when a cell cannot contain an excessive inflow of water. (occurs in animal cells and certain bacteria) What happens when a cell cannot contain an excessive inflow of water?

Osmotic Burst of Red Blood Cells https://www.youtube.com/watch?v=OYoaLzobQmk

Day Two: Be VERY careful holding your egg Egg Experiment Day Two: Be VERY careful holding your egg

OSMOSIS WORKSHEET On weebly under Cell Structure & Transport in Class work  Answer on a lined sheet of paper

Closure Define diffusion. What are the 3 types? Draw a picture illustrating a hypotonic solution. What is the cell membrane composed of? https://www.youtube.com/watch?v=w3_8FSrqc-I