Documents Ch.7 cell

1.Cells Chapter 72. The size range of cells 3. Why are cells so small? Small cells have a high surface area to volume ratio which allows more stuff to move in and out of…

Science Igcse biology edexcel 2.1 2.16

1. LEVELS OF ORGANIZATION2.1 describe the levels of organisation within organisms: organelles, cells, tissues, organs and systems.Organisms are made from organizations of…