chapter active and passive transport
DESCRIPTION
Biology Form 4TRANSCRIPT
ACTIVE AND PASSIVE TRANSPORT
4S1 – 27 Feb 2012
Sultanah Bahiyah National Secondary School
Lebuhraya Sultanah Bahiyah
05350 Alor Star
Kedah Darul Aman
Prepared by Muhammad Hafizuddin KamarudinB.Sc Biological Sciences (Hons)University of WarwickCV4 7AL Coventry, UK.
Learning Objective explain the movement of substances across the
plasma membrane through the process of active transport
explain the process of active/passive transport in living organisms using examples
compare and contrast passive transport and active transport.
Jerai Mt. expedition
Recap : Facilitated Diffusion Definition :- Transport of molecules - Across the plasma membrane- By process involves
- 1. Carrier protein ( certain type of molecules )- 2. Pore protein ( certain specific ions)
- Across concentration gradient
Facilitated diffusion
- 5 students please?
Activity 1
Video Simulation
facilitated diffusion.FLV
Active Transport
Definition
•Active transport-is movement of molecule or ions-against concentration gradient -across the plasma membrane
Properties
•Requirement of energy : ATP aka adenosine triphosphate•Require : Carrier protein•Type of molecule : Mineral ions , amino acids.•Transportation condition : Eliminate or accumulate of substance of cell.
Active Transport
- 8 + 1 students please?
Activity 2
Video Simulation
Sodium potassium pump
Sit in your group please
Describe the processes of passive and active transport in living organism?
Eg: Process : Active transport Type of molecules transported : Sodium Ions and
Potassium Ions Description : 1. By Carrier protein from outside to inside (Sodium ions) 2. By Carrier protein from inside to outside ( Potassium
ions)
Alveoli – Blood Capillaries – O2 – CO2
Villi – Blood Capillaries – Amino Acids - Glucose
Root Hairs – Soil Particles – Water
Root Hair - Soil particles – ions - ATP
Compare and Contrast between passive and active transport
The movement of substance
Against concentration gradient
Down concentration gradient
Active Transport Passive Transport
Cellular energy ?
Required Not Required
Active Transport Passive Transport
Location take place?
Living organism Living and non living physical condition
Active Transport? Passive Transport?
Close all ur books! =)
Worksheets Timeeee!
3.7 Answer Active transport is the movement of molecules or ions from a region of lower concentration to a region
of higher concentration across the plasma membrane with the use of cellular energy. Besides using energy in the form of ATP that is generated during respiration, active transport also
require carrier protein. The carrier protein has active site which binds with a particular molecule or ion and another active site
which binds to the ATP molecules. Active transport results in the accumulation or elimination of molecules or ions from the cells, i.e
equilibrium state is never achieved. Carrier proteins involved in active transport are often called pump because they operate just like water
pump which use energy to move water against gravity. In animal cells, the concentration of potassium ions inside the cells is always higher than the
concentration outside the cell. While the concentration of sodium ions outside the cells is always higher than the concentration inside the
cells. Carrier proteins are called sodium-potassium pumps that help to maintain the concentration gradients by
pumping sodium ions out of the cell and potassium ions into the cell. In plant cell, there is sodium pump mechanism in mangrove root.
3.8 Answer 23 41 Carrier protein P and ADP Shape Previous
3.9 Answer
Bye =P