AQA A Level Biology复习笔记2.1.1 The Cell Theory

Category: A-level课程, 教材笔记, 福利干货 Date: 2022年6月27日上午11:38

Until microscopes became powerful enough to view individual cells, no-one knew for certain what living organisms were made from
A scientist called Robert Hooke is thought to be the first person to view cells (including single-celled microorganisms) and Hooke also came up with the term "cells" to describe these newly discovered structures
Matthias Schleiden and Theodor Schwann were two other scientists who studied animal and plant cells
- In 1837, they came up with the idea that all living organisms are made of cells
- This idea is known as ‘cell theory’
- The cell theory is a unifying concept in biology (it is universally accepted)
The cell theory includes three main ideas:
- All living organisms are made up of one or more cells
- Cells are the basic functional unit (i.e. the basic unit of structure and organisation) in living organisms
- New cells are produced from pre-existing cells