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Download Chapter 7 * Cell Structures and Function
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Chapter 7 – Cell Structures and Function Read pp. 169 – 173 and answer the following questions 7-1 Life is Cellular Living things are made up of units called ________________________ - a collection of living matter enclosed by a barrier that separates the cell from its surrounding. Using the timeline, place the following in order of their discovery, from the earliest to the latest. Name the scientist ____ All plants are made of cells ______________________________ ____ Cells organelles may have once been free-living organisms __________________________ ____ The first cells were seen and a book published with drawings ____ All animals are made of cells ___________________________ ____ Observation of organisms living in pond water ____ Cells can only come from other cells _______________________ ___________________________ _____________________________ The Cell theory states: 1. All living things are composed of ______________. 2. Cells are the basic units of ___________________ and ____________________ in living things 3. New cells are produced from ___________________ cells. The two types of microscope are: Transmission electron microscopes can be used to explore cell _________________ and large ____________________ molecules. Scanning electron microscopes produce [ 2D ] [ 3D ] [ 4D ] images of the cell. (circle) Specimens viewed under electron microscopes must first be [preserved ] [stained ]. (circle) Prokaryotes and Eukaryotes Cells come in a great variety of shapes and an amazing range of sizes. Cells fall into 2 broad categories depending on whether they contain a ___________________ - a large membrane-enclosed structure that contains the cell’s genetic material in the form of DNA (a membrane is a thin layer of material that serves as a covering or lining). It controls many of the cells activities. Two types of cells: ___________________- cells that contain nucleus ___________________ – cells that do not contain a nucleus Despite their differences all cells have four structures in common: 1. __________________ - Contains genetic material 2. __________________ – site of protein synthesis (place where proteins are made) 2016-2017 1 3. __________________ – Gelatin-like material inside the cell that the organelles are suspended in 4. ____________________ - controls what materials enter and leave a cell Use the Venn Diagram to compare the two types of cells Eukaryotic Cell Prokaryotic Cell Both 7-2 Eukaryotic Cell Structure Eukaryotic (yew ker ee oh tik) cells contain organelles- (little organs) each has a specific function for cell survival. Cell biologists divide the eukaryotic cell into two major parts: the __________________ and the ________________________. 2016-2017 2
