Molecule Movement & Cells

Slides:

Advertisements

Similar presentations

Cell Transport Semipermeable membrane – small, lipid-soluble particles can pass, but large, charged particles cannot Diffusion – net movement of particles.

Advertisements

Cells and Their Environment

Cellular Transport.

Fluid Mosaic Model Structure can be observed with EM

Movement through the channel

Transport VOCAB ONLY. An INTEGRAL MEMBRANE PROTEIN that moves molecules PASSIVELY across cell membranes by attaching, CHANGING SHAPE, and flipping to.

Types of Transport Across the Cell Membrane

1 ACTIVE TRANSPORT ACROSS A MEMBRANE. Overview of Active Transport Active Transport 1. Carrier Protein 2. Endocytosis3. Exocytosis.

Active Transport, Diffusion and Osmosis. Passive Transport by Diffusion Diffusion is the movement of molecules from an area of high concentration to an.

Transport Across the Cell Membrane maintains homeostasis of cell membrane is selectively permeable – some things can pass through but others can’t 3 types:

WAYS MOLECULES MOVE Chapter 7-3

WAYS MOLECULES MOVE Chapter 7-3

Homeostasis and Transport

WAYS MOLECULES MOVE Chapter 7-3

WAYS MOLECULES MOVE Chapter 7-3

Homeostasis and Cell Transport

Chapter 7.3 Cell Transport

Centrioles Pairs of microtubular structures Play a role in cell division.

Cell Membrane & THE WAYS MOLECULES MOVE Chapter 7-3

Types of Cellular Transport  Passive Transport  Does NOT require energy cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis  Active.

Movement through the channel Why do molecules move through membrane if you give them a channel? ? ? HIGH LOW.

Facilitated Diffusion Active Transport

Chapter 3 Cells and Tissues Cell Physiology. Membrane Transport  Membrane Transport  Movement of substances into and out of the cell  Selective Permeability.

Movement Across the Plasma Membrane

Types of Transport Across Cell Membranes 1. Passive Transport.

Osmosis, Diffusion, Active Transport

Part 3: Homeostasis and Cell Transport (Chapter 5)

Cell Transport. What can cross the cell membrane easily? 1) Hydrophobic molecules- like lipids, carbon dioxide, and oxygen can dissolve in membrane and.

Border Control! Active & Passive Transport across cell lines! After this lecture you will be able to… Part 1: Understand Diffusion and concentration gradients.

Cell Membrane What is it? – Barrier that separates cell from external environment – Composed of two phospholipid layers Other molecules are embedded in.

Passive vs Active Transport Osmosis, Diffusion, and Energy.

Cell Processes Transport. I. Transport Cell Membrane helps maintain homeostasis by regulating what substances enter and leave the cell.

Chapter 7-3 in textbook Cell Transport maintaining homeostasis.

Homeostasis & Transport

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

“You are what you eat” Knowing what you do about the cell

Mitochondria Have their own DNA Bound by double membrane.

Active and Passive Transport

WAYS MOLECULES MOVE Chapter 7-3

Active Transport Using energy.

Cell Transport.

Section 3.3 – Movements Through Cell Membranes

Section 4 Cellular Transport

Chapter 7 Cell Structure and Function

CELLULAR TRANSPORT.

Passive transport movement of molecules across the cell membrane without an input of energy by the cell Diffusion movement of molecules from an area of.

Write Cell Transport.

PASSIVE VS ACTIVE TRANSPORT

WAYS MOLECULES MOVE Chapter 7-3

Protein Pump Exocytosis Endocytosis

ATP ATP Active Transport Using Energy ATP ATP.

Crash Course Membranes and Transport-CrashCourse (Resources Page)

Cellular Transportation

Transport Flip ‘n Go.

Movement of particles across the cell membrane without using energy

Cell Transport Overview

Osmosis, Diffusion, Active Transport

Chapter 5 Homeostasis and Cell Transport

Cell Membrane Structure and Function

Osmosis, Diffusion, Active Transport

Transport Across the Cell Membrane

Types of Transport Across Cell Membranes

Osmosis, Diffusion, Active Transport

BELLWORK What are the three organelles that only plants have?

Movement Across Membranes

Movement through Membranes

Movement of particles across the cell membrane without using energy

PHAGOCYTOSIS ENDOCYTOSIS EXOCYTOSIS PINOCYTOSIS

Cell Transport.

Presentation transcript:

Molecule Movement & Cells Passive Transport Active Transport

Solution Differences & Cells solvent + solute = solution Hypotonic Solutes in cell more than outside Outside solvent will flow into cell Isotonic Solutes equal inside & out of cell Hypertonic Solutes greater outside cell Fluid will flow out of cell

Passive Transport No energy required Move due to gradient differences in concentration, pressure, charge Move to equalize gradient High moves toward low

Types of Passive Transport 1. Diffusion 2. Osmosis 3. Facilitated diffusion

Carrier Proteins Cells have proteins embedded in the cell membrane to help large molecules get through. These proteins are celled carrier proteins.

Process of Facilitated Transport Protein binds with molecule Shape of protein changes Molecule moves across membrane

Facilitated Diffusion with CARRIER PROTEINS Animation from: http://bio.winona.edu/berg/ANIMTNS/facdifan.gif Carrier protein grabs molecule, changes shape, and flips across to other side like a revolving door http://www.gobananas.co.uk/edinburgh-stag-party/enquiry/index.htm

Ion CHANNELS ION CHANNELS charged Membrane proteins create a tunnel through which Ions can pass. http://bio.winona.edu/berg/ANIMTNS/voltgate.htm ION CHANNELS charged _______________ allow________ ions to get past the ____________ lipid center hydrophobic

What if cell needs to move a molecule _________ the CONCENTRATION GRADIENT? _______________ AGAINST (LOWER  HIGHER) Cell example: Want to put MORE glucose into mitochondria when there is already glucose in there Image from: http://www.biologyclass.net/mitochondria.jpg

Active Transport Molecular movement Requires energy (against gradient) Two types pump Endo or Exocytose

Pumps Carrier proteins that change shape for molecules that are not the correct shape. Completely changing shape requires energy.

PUMPS ___________ transport (requires energy from ______) Can move molecules from _____ concentration to ______ Example: nerve cells Na+ is pumped out of cells at same time K + is taken into cells ACTIVE ATP low high

Endocytosis Movement of large material Movement is into cells Particles Organisms Large molecules Movement is into cells Types of endocytosis bulk-phase (nonspecific) receptor-mediated (specific)

Process of Endocytosis Plasma membrane surrounds material Edges of membrane meet Membranes fuse to form vesicle

Forms of Endocytosis Phagocytosis – cell eating Pinocytosis – cell drinking

Exocytosis Reverse of endocytosis Cell discharges material

Exocytosis Vesicle moves to cell surface Membrane of vesicle fuses Materials expelled

WHITE BLOOD CELL ENGULFING BACTERIA (Phagocytosis) http://fig.cox.miami.edu/~cmallery/255/255ion/fig14x28.jpg

INSULIN being released by pancreas cells using exocytosis http://fig.cox.miami.edu/~cmallery/255/255ion/fig14x26.jpg

INSULIN being released by pancreas cells using exocytosis http://fig.cox.miami.edu/~cmallery/255/255ion/fig14x26.jpg