Cellular Transport - rowan.k12.ky.us

Cellular Transport - rowan.k12.ky.us

Cellular Transport Cellular Transport involves the Cell Membrane!

PASSIVE TRANSPORT ACTIVE Energy not required TRANSPORT DIFFUSION Energy

OSMOSIS REQUIRED! Hypertonic ENDOCYTOSIS Hypotonic Carrier

Isotonic Mediated Osmoregulation Phagocytosis FACILITATED Pinocytosis

DIFFUSION EXOCYTOSIS Passive Transport = Energy not required.

1. Diffusion = molecules move from an area of high concentration to an area of low concentration. Diffusion is the driving

force behind the movement of many substances across the cell membrane. More on diffusion

http://www.youtube.com/watch? v=STLAJH7_zkY Diffusion will occur IF: A.There is a concentration gradient across the cell

membrane. B.Solution or membrane is permeable. permeable NOTE! The cell membrane is semipermeable, which means only

small molecules or fat soluble molecules can pass across the membrane without help. Permeable: It can pass. Impermeable: Cannot

pass. 2 nd

Type of Passive Transport: Osmosis: Osmosis The diffusion of water across the cell

membrane. How does water know whether to move into or out of a cell?

Hypertonic solution: The solution with the higher concentration of solutes. Hypotonic solution: The solution with a lower solute concentration.

Isotonic solution: Solutions of equal concentration of solutes. Egg Cell in hypertonic vs.

hypotonic solution http://www.youtube.com/watch? feature=endscreen&NR=1&v=SSS3EtKAz Yc 3rd Type of

Passive Transport: 3. Facilitated Diffusion: Molecules are transported across the cell membrane by a carrier protein.

Ex. Glucose is carried into a red blood cell

by a carrier protein. Cell Survival Depends on the Proper Balancing of Water Uptake and Loss

Animals that live in hypoor hypertonic environments must have adaptations for osmoregulation. osmoregulation

The protist Paramecium has a contractile vacuole that pumps water out as it enter.

Paramecium vacuole pumping out water http://www.youtube.com/watch? v=pahUt0RCKYc&feature=related

The cells of plants, prokaryotes, and fungi have cells walls, which keeps the cell from bursting.

A cell is turgid (firm) when the back pressure of the cell wall on the cell opposed any further water uptake.

A cell is flaccid (limp) when its surroundings are isotonic and there is no net tendency for water to enter the cell. Active Transport

Essential in the ability of a cell to maintain internal concentrations of small molecules. It is the pumping of molecules against their

gradients. ATP supplies the energy. Sodium-Potassium Pump exchanges Na+ for K+

across the plasma membrane of an animal cell. https://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/ animation__how_the_sodium_potassium_pump_works.html

All cells have electrical potential energy (voltage) across their plasma membranes. This is called a membrane potential. The inside of a cell is ---, and the outside is +, which causes the

membrane to favor the passive transport of cations into the cell. ACTIVE TRANSPORT 1. Endocytosis = The cell membrane surrounds and

engulfs large particles. 1. Carrier Mediated Endocytosis = involves carrier proteins on membrane 2. Phagocytosis = Cells bring in large, solid particles (cellular eating)

3. Pinocytosis = Cells take up liquid. (cellular drinking) Carrier Mediated Endocytosis Phagocytosis

(Endocytosis) Pinocytosis (Type of Endocytosis) 2. Exocytosis = Cells remove

large particles. Exocytosis The End

Recently Viewed Presentations

  • Genetic evidence for essential calcium transporters in pollen

    Genetic evidence for essential calcium transporters in pollen

    Genetic evidence for essential calcium transporters in pollen growth and fertilization. Sabine Frietsch 1,3, Shawn M. Romanowsky 1,2, Morton Schiøtt 4, Michael G. Palmgren 4, Jeffrey F. Harper 1,2
  • Linear Models - Michigan State University

    Linear Models - Michigan State University

    Logistic Regression Rong Jin Logistic Regression Model In Gaussian generative model: Generalize the ratio to a linear model Parameters: w and c Logistic Regression Model In Gaussian generative model: Generalize the ratio to a linear model Parameters: w and c...
  • Persia Ancient Greece

    Persia Ancient Greece

    Persia Ancient Greece. Wars among the Greek poli were common in the fifth century before the Common Era, but the city-states united to defend themselves against Persia, the most powerful empire in the world at that time.The victorious Greeks developed...
  • Distributed Aircraft Maintenance Environment

    Distributed Aircraft Maintenance Environment

    Grid-based on-line aeroengine diagnostics Jim Austin, University of York Aims To build a distributed, Grid based, diagnostic maintenance system To prove the technology on a Rolls Royce Aeroengine diagnostic maintenance problem Demonstrate the process of building a Grid based system...
  • Paediatric Hearing Loss - Macquarie University Hospital

    Paediatric Hearing Loss - Macquarie University Hospital

    Dr Nirmal Patel MBBS (Hons)(Syd) FRACS (OHNS) MS (UNSW) Associate Professor of Surgery (Macquarie University) Director, Kolling Deafness Research Centre (University of Sydney) Thanks for your attention. Summary Introduction Conductive Hearing Loss Sensorineural Hearing Loss Diagnosis Treatment ...
  • Lecture - McGill CIM

    Lecture - McGill CIM

    COMP 558Lecture 3RGBThurs. Sept. 6, 2018. Cameras. Digital SLR (annual sales ~ 10 million units per year) Smart phone (annual sales: over 1 billion units per year) Image size. 1 megapixel (one million pixels) e.g. "720p" is 1 MP (1280...
  • Expressions with avoir

    Expressions with avoir

    La Conjugaison Il fait attention en classe. Elle fait ses devoirs dans sa chambre. Il fait la cuisine ou la grasse matinée? Il fait ses devoirs ou la cuisine? Il fait attention ou la vaisselle? Il fait attention ou la...
  • Fákeppni og einkasölusamkeppni

    Fákeppni og einkasölusamkeppni

    Kafli 13 Fákeppni og einkasölusamkeppni Viðfangsefni kafla Markaðsfyrirkomulag Leikjafræði Fákeppni með samráði Cournot líkan af fákeppni Bertrand líkan um verðlagningu Stackelberg líkan af fákeppni Samanburður fákeppnislíkana Einkasölusamkeppni Eiginleikar markaðsforma Fákeppni Fákeppni á við markaðsaðstæður þar sem fáir seljendur eru í...