Presentation on theme: "The cell is the basic unit of living things."— Presentation transcript:
1 The cell is the basic unit of living things. Notes E 1.1The cell is the basic unit of living things.
2 Living things are different from nonliving things. Organisms’ Life Processes:Are organizedGrow and developRespond to their environmentAre able to reproduce
3 All organisms need: Energy Certain Materials Living Space (All energy used by life on Earth comes directly or indirectly from the Sun)
4 All living things are made of cells. Cell=smallest unit of life that can perform basic activitiesMulticellular organisms have specialized cells that, together, meet basic needs.
5 The microscope led to the discovery of the cell. Robert Hooke and Anton van Leeuwenhoek—first to describe cells (1660s and 1670s)Microscope=the new technology that led to their discoveries
6 Cells come from other cells. Cell Theory (1850s):All living things made of cellsCells carry out life functionsCells come only from other cells
7 The cell Theory is important to the study of biology. Theory=an explanation of what is observed, must be supported by evidenceLouis Pasteur used Cell Theory as a foundation for his studies:Bacteria cause food spoilage, sour milk, diseases.Living things don’t arise by spontaneous generation.