1ESO Biology and Geology. Summery 1. Here is an activity on your last unit for you guys to complete. đ The Biosphere 1.- Complete the text with the following words: nucleus, functions, substances, information, water, cells, organelles, membrane, structure, cytoplasm. All _______________________ have the following common basic _______________________: Cells have a wall called the cell _______________________ or the plasma membrane. Through it, the cell exchanges _______________________ with its external environment. Inside the cell we find the _______________________, filled with a liquid that is mainly _______________________. Here we find the _______________________, which perform different cellular _______________________. Genetic material (DNA) has the _______________________ needed to control the cell functions. In prokaryotic cells, DNA is found within the cytoplasm. In eukaryotic cells, it is inside the _______________________. 2.- Match each plant cell o...