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(7th) Chapter 3-1 Cornell Notes Discovering Cells (7th) Chapter 3-1 Cornell Notes Key Questions 1. What are cells? 2. What is the cell theory? Chapter 3-1: Key Terms • cell• cell theory• unicellular- • • • • multicellulartissueorganorgan system- Chapter 3-1 Part 1 • cells: units of structure and function in living things; • most cells microscopic. Chapter 3-1 Part 2 • microscope: now possible to observe/study cells; • Robert Hooke: coined the term “cells”; • Anton van Leeuwenhoek: studied cells, coined term “animacules”. Chapter 3-1 Part 3 1. Matthias Schleiden: all plants made of cells; 2. Theodor Schwann: all animals made of cells; • 3. Rudolf Virchow: new cells come from old cells; 1, 2, 3 + others formed cell theory; cell theory: 1. All living things made of cells; 2. Cells basic unit of structure and function; 3. All cells produced from other cells. Chapter 3-1 Part 4 unicellular: composed of only 1 cell; • multicellular: composed of many cells. Chapter 3-1 Part 5 multicellular organisms: cells to tissues to organs to organ systems; • tissue: group of similar cells working together for specific function; • organ: made of different kinds of tissues working together for specific functions; • organ systems: group of organs working together for specific functions.