Showing posts from February, 2007

Chapter 3 Movement of Substances Across The Plasma Membrane

Active Transport:

Passive Transport:

All living cells require oxygen, nutrients and minerals.
These substances enter the cell through the plasma membrane. Excretory products such as carbon dioxide and urea are eliminated from the cells through the plasma membrane. These substances need to move across the plasma membrane.
The plasma membrane is semi-permeable in nature and allows only the passage of water and specific dissolved substances across it.Movement of substances across the cell is essential to enable the cell to receive substances required for cell respiration and to excrete waste products The plasma membrane is composed of the phospholipid bilayer, carrier protein and poresMovement of substances across the plasma membrane is through passive transport and active transport.Passive transport involves the movement of dissolved substances from an area of higher concentration of the substance to an area of lower concentration of that subtance.
This type of movement follows a concentr…
Tingkatan 4S1Agilandeswari A/P Ganesan30Aina Liyana Bt Mohd Zamri20Anusha A/P Loganathan20Farhana Bt Md Nor10Khairul Amar B Anuar20Louis Marcus A/L William 40Meor Ahmad Fadzli B Mokhtar 70Mohamad Azlan B Mohd Najib 40Mohamad Aznan B Mohd Najib 30Mohamad Fadzley B Dawam 50Mohamad Suhaimi B Shah Malek 40Mohamad Sharifuddin B Shaharudin40Mohd Izzat B Mohd Fauzi 30Muhammad Ismail B Yusuf 15Muhammad Nur Asnawi B Romly 40Muhammad Zulfakhri B Mohd Sobri 10Nareas A/L Parasuraman 40Noor Haswani Bt Zailan50Nor Aniqah Bt Mohd Yusof30Nor Hidayah Bt Mohd Khairi50Nor Iddayah Bt Mohd Nor60Nor Izuana Bt Mohd Nor10Norsuhaila Bt Mohd Zaimi 10Nur Izzah Bt Kassim35Nur Ritasha Bt Taridi20Nur Syazwani Bt Abdul Razak20Nurul Anisa Bt Mahammud Ramli30Nurul Atiqah Bt Shahrul Zaman30Nurul Hidayah Bt Abu Bakar15Nurul Nadia Bt Hairuddin35Nurul Sayfiqah Bt Mohd Yusof…
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