Cell Biology and Organisation

Question 1:Diagram below shows four levels of cell organization in humans. (a) Complete Table below by naming Level 2 and Level 3. [2 marks] (b)(i) The cells undergo process P to become specific cells that perform a specific function.Name process P. [1 mark](ii) What is the function of the structure in level 2? [1 mark](iii) … Read more

Question 1:Diagram below shows a plant cell as seen under an electron microscope.(a)(i) On the diagram, label the structures A, B, C and D. (2 marks)(a)(ii) State the function of structure A and structure D. (2 marks) (b) Explain the role of C to maintain cell turgidity. (2 marks)(c) Every somatic cell which contains structure … Read more

Internal Environment of Multicellular Organism The internal environment of a multicellular cell is referring to the medium surrounding the cell. It consists of blood plasma and interstitial fluid. (also called the extracellular fluid) Homeostasis Homeostasis is the property of a system, especially a living organism, that regulates its internal environment so as to maintain a … Read more

Different organ work together form an organ system. The human body has eleven different organ system, namely the Circulatory System Digestive System Reproductive System Endocrine System Nervous System Respiratory System Muscular System Skeletal System Excretory System Lymphatic System (Immune System) Integumentary System Circulatory System Organ: Heart, Blood VesselFunction: Transport nutrients, gases and wastes to and … Read more

Cell specialisation Cell specialisation means division of labour among cells. Each type of cell specialises in a specific function. Importance of Cell Specialisation Cells can perform specific task with greater efficiency. Enable multicellular organisms adapt to various environment. Cell Specialisation in Animal Cell Function Red blood cells Transport oxygen White blood cells Destroy microorganisms. Engulf … Read more