EOY Biology Revision- Cells

Cells

• cells are the fundamental unit "building block" of organisms
• a microscope is used to observe cells.
• the process by which material moves into and out of cells is diffusion
• multicellular organisms are organised (cells, tissues, organs, organ systems, organisms)
• tissues: muscle, epithelial, connective and nervous
• organs: the heart, lungs, liver, eyes, and stomach
• cell-
• unicelliar organisms only have one cell.
• animal cells and plant cells have features in common, such as a nucleus, cytoplasm, cell membrane. Plant cells also have a cell wall, and often have chloroplasts and a permanent vacuole.
• diffusion- molecules move from an area of high concentration to an area of low concentration.
•  nucleus function- it contains the majority of the cell's genetic…