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www.fetsystem.com [GCSE/IGCSE/O-LEVEL BIOLOGY SECTION 1 REVISION NOTES] Characteristics of animal cells Animal cell contains cell membrane Animal cell contains nucleus Animal cell contains cell membrane Animal cell does not contain chloroplasts Animal cell does not contain cell wall Characteristics of plant cells Plant cell contains cell membrane Plant cell contains nucleus Plant cell contains cell membrane Plant cell contains chloroplasts Plant cell contains cell wall Functions of cell membrane Cell membrane protects the inside of the cell It controls what things can go in and out of the cell Absorption-root hair cells The root hair cell absorbs water and minerals from the soil. They provide larger surface area which increases the absorption from the soil Conduction and support-xylem vessels Xylem vessels conduct water from the root to the entire body of the plant Xylem vessels provide support because they have thick cell wall made of lignin Transport of oxygen-red blood cells Red blood cells transport oxygen They take oxygen from the lungs and transport it to the rest of the body Differentiate between: Cell Tissue Organ Organ system FREE ONLINE LECTURES&REVISION MATERIAL BY FET SYSTEM Page 1 www.fetsystem.com [GCSE/IGCSE/O-LEVEL BIOLOGY SECTION 1 REVISION NOTES] Cell, tissue, organ, organ system Cell is basic unit of structure Tissue is a group of similar cells Organ is a structure of different tissues performing a special task A group of organs working together to perform a task is called organ system FREE ONLINE LECTURES&REVISION MATERIAL BY FET SYSTEM Page 2