Cell Transport How molecules move in and out of a cell

Cell Transport

How molecules move in and out of a cell

Passive & Active Transport

• Passive Transport – requires no energyMoves molecules from high to low concentration

• Active Transport – requires energyMoves molecules from low to high concentration

Passive Transport

• http://programs.northlandcollege.edu/biology/biology1111/animations/passive1.swf

Passive Transport - 3 types

1. Simple Diffusion – molecules going from high to low concentration across a membrane

2. Facilitated Diffusion – molecules going from high to low concentration through a protein

3. Osmosis – diffusion of water

Active Transport

http://www.yellowtang.org/animations/endocytosis_exocytosis.swf

Passive Vs. Active Transport

• Active Transport– Requires Energy– Go from Low to

High Concentration– Use Proteins

• Passive Transport– No Energy– Go from High to

Low Concentration– May or may not

use proteins

Passive vs. Active Transport

Water water everywhere, but not a drop to drink!

The effects of osmosis on cells

Hypotonic Isotonic Hypertonic

Different solutions have different impacts on cells…

Hypertonic, Hypotonic, IsotonicWater always tries to balance itself out..so….

Hyper – high (more) Hypo – low (less)1. Hypertonic – more water inside the cell

Result – water flows out of cell2. Hypotonic - less water inside the cell

Result – water flows into the cell3. Isotonic – equal water inside/outside the cell

Result – water levels stay the same

Hypertonic, Hypotonic, Isotonic?

• What is it?

• What direction will the water move?

• What will happento the cell size?

Salt water

• What is it?

Pure water

Salt water

• What is it?

Pure water

Think about this…….

• You have two identical pitchers side by side– one filled with exactly 2 quarts of water– the other filled with 2 quarts of Kool-aid

• Which has more water in it?

• WHY???

Cell Transport How molecules move in and out of a cell

Documents

WAYS MOLECULES MOVE Chapter 7-3

Cell membrane transport worksheet - Deer Valley … through the Cell Membrane Does the cell use Do molecules move from high to energy to transport MOVEMENT Does it move molecules through

Transport of Molecules in a Cell

Cell Structures Movement & Organelles. Diffusion Movement of molecules from an area of high concentration to an area of low concentration Move to

2 Neural Cell Adhesion Molecules

Cell Membrane & THE WAYS MOLECULES MOVE Chapter 7-3

CELL MEMBRANE - idaebiology.files.wordpress.com · GRADIENT Physical difference between two regions of space, due to these differences physical molecules tend to move from one region

WAYS MOLECULES MOVE Chapter 7-3

Cell Membrane and transport - Tishk International University · 2020. 3. 24. · Weeee!!! Passive Transport • cell uses no energy • molecules move randomly • Molecules spread

Ecm Cell Adhesion Molecules

Cell Communication Signaling molecules & Cell surface receptors

Molecules in the Cell

Bacteria Attacks!!. To move the cell around (flagella) Or move things around the cell (cilia)

The Plasma Membrane – Gateway to the Cell. The Plasma Membrane is Semipermeable Small molecules and larger hydrophobic molecules move through. Ions, hydrophilic

CELL ADHESION MOLECULES AND MATRIX PROTEINS

Movement Across the Plasma Membrane The cell membrane is semi-permeable A few molecules move freely –Water, Carbon dioxide, Ammonia, Oxygen Carrier proteins

Cell Adhesion Molecules - bdj.co.jp

Cell adhesion molecules in stromal corneal dystrophies adhesio… · Cell adhesion molecules, together with cell junctions, are responsible for the establishment of interactions between

The Fluid-Mosiac Structure of the Cell (Plasma) Membrane “FLUID” – the molecules can move within the membrane “MOSAIC” – other molecules eg proteins are

Molecules involved in T cell activation