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Transports materials within the cell. The region inside the cell except for the nucleus. Organelle that manages or controls all the cell functions in a eukaryotic cell. Contains chlorophyll, a green pigment that traps energy from sunlight and gives plants their green color.
The cell wall is a rigid structure that surrounds cells in plants, algae and fungi. It’s made mainly of the carbohydrate cellulose in plant and algae cells. In fungi, the cell wall is made of chitin. Its primary function is to support cells and prevent them from changing shape.
Cells contain organelles which have functions. Bacterial cells are different from animal and plant cells as they have no organelles which have membranes and their cell wall is chemically different. Fungi have a cell wall which is not made of cellulose. Bacteria have plasmids and circular DNA.
attaches cells to their neighbours. The wall is made of cellulose, a glucose polymer that is quite rigid. The cell wall gives plant cells shape and structure – this is why plant cells tend to have straighter sides than animal cells. The cell wall prevents the cells from bursting when too much water is available (e.g. rainy seasons).
These worksheets will help you learn more about all the organelles found within cells. We start by exploring the main structures that function to keep the basic units of life thriving. We investigate how they interact and the movement of substances within the plasma membrane.
Moving Cellular Materials. Describe the function of a selec-tively permeable membrane. Explain how the processes of diffusion and osmosis move molecules in living cells. Explain how passive transport and active transport differ. Cell membranes control the sub-stances that enter and leave the cells in your body. Review Vocabulary.
Key Concept: A plant's cell wall helps to protect and support the cell. The cell membrane controls what substances come into and out of a cell. An organelle is a structure in the cell that has a specific function. The cell wall is a stiff layer that protects and supports the cell. Animal cells do not have cell walls.
