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Biology - Chap. 7

review for 7.1

cell basic & smallest units of life; discovered by Robert Hooke who used a microscope to study cork
bacteria discovered by Anton Van Leeuwenhoek
cell theory all living things are made up of cells
cell theory cells are the basic units of structure and function in living things
cell theory new cells are produced from existing cells
microscopes (light) use lenses to magnify the image of an object by focusing light or electrons
microscope (electron) used to see very small cellular structures
cell membrane thin flexible barrier surrounding cells
plasma membrane cells in connection with direct fluid of the blood
nucleus contains genetic DNA & controls cell's activities
Eukaryotes cells that enclose their DNA in nuclei; separate their genetic material from the rest of the cell
Prokaryotes cells that don't enclose their DNA in nuclei; don't separate their genetic material within the nuclei
Created by: puccio.bridget



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