Presentation is loading. Please wait.

Presentation is loading. Please wait.

Notes E 1.1 The cell is the basic unit of living things.

Similar presentations


Presentation on theme: "Notes E 1.1 The cell is the basic unit of living things."— Presentation transcript:

1 Notes E 1.1 The cell is the basic unit of living things.

2 Living things are different from nonliving things. Organisms’ Life Processes: – Are organized – Grow and develop – Respond to their environment – Are 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 activities Multicellular 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 cells Cells carry out life functions Cells 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 evidence Louis 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.


Download ppt "Notes E 1.1 The cell is the basic unit of living things."

Similar presentations


Ads by Google