List six characteristics of all living organisms. In which three ways do human cells differ from those of plants? Draw a fully labelled diagram of the structure of a typical (unspecialised) cell and describe the function of each part.

### Six Characteristics of All Living Organisms 1. **Cellular Organization**: All living organisms are composed of one or more cells, which are the basic units of life. 2. **Metabolism**: Living organisms undergo various biochemical reactions to convert food into energy and maintain life processes. 3. **Homeostasis**: They have the ability to maintain a stable internal environment despite changes in external conditions. 4. **Growth and Development**: Living organisms grow and develop according to specific instructions coded for by their genes. 5. **Reproduction**: They have the ability to reproduce, either sexually or asexually, to produce new organisms. 6. **Response to Stimuli**: Living organisms can respond to environmental changes or stimuli, which is essential for survival. ### Three Ways Human Cells Differ from Plant Cells 1. **Cell Wall**: Plant cells have a rigid cell wall made of cellulose, providing structural support and protection, while human cells (animal cells) do not have a cell wall. 2. **Chloroplasts**: Plant cells contain chloroplasts for photosynthesis, allowing them to convert sunlight into energy. Human cells lack chloroplasts and do not perform photosynthesis. 3. **Shape and Size**: Plant cells are generally more regular and rectangular in shape due to the cell wall, while human cells are more varied in shape and size, often being round or irregular. ### Diagram of a Typical (Unspecialised) Cell Here is a description of the structure of a typical unspecialised cell along with the functions of each part: 1. **Cell Membrane**: A semi-permeable membrane that surrounds the cell, controlling the movement of substances in and out. 2. **Cytoplasm**: A jelly-like substance where cellular processes occur, containing organelles and providing a medium for biochemical reactions. 3. **Nucleus**: The control center of the cell that contains genetic material (DNA) and regulates cell activities, including growth and reproduction. 4. **Mitochondria**: The powerhouse of the cell, where energy (ATP) is produced through cellular respiration. 5. **Ribosomes**: Small structures that synthesize proteins by translating messenger RNA. 6. **Endoplasmic Reticulum (ER)**: A network of membranes involved in protein and lipid synthesis. The rough ER has ribosomes on its surface, while the smooth ER does not. 7. **Golgi Apparatus**: A series of flattened membranes that modify, sort, and package proteins and lipids for secretion or use within the cell. 8. **Lysosomes**: Organelles that contain digestive enzymes to break down waste materials and cellular debris. 9. **Centrioles**: Structures involved in cell division, helping to organize the mitotic spindle. 10. **Vacuoles**: Storage organelles that can hold various substances, including nutrients and waste products. In plant cells, they are larger and help maintain turgor pressure. ### Diagram Unfortunately, I cannot draw diagrams directly. However, you can easily find a labeled diagram of a typical cell in biology textbooks or online resources. The diagram should include all the parts mentioned above with arrows indicating their functions.