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Module 3 Assignment

Module 3  Assignment

Q Cell Structure and Metabolism Concept Check Use this file as a worksheet: Module 3 Concept check 2022.docx Download Module 3 Concept check 2022.docx Print and read through the questions before you read the supporting materials and listening to lecture. That way your mind is prepared to find the answers. Answer the questions as you read. After class you can add to your answers from your lecture notes. The material contained in these concept checks includes some of major topics, but not all. Please use these as a “guide” as you study and go through the lecture and lab material. Upload your completed concept check.? Cell Structure and Function What is a cell 1. State the basic principles of the cell theory. 2. Why are most cells small? 3. Explain how the surface area-to-volume ratio limits cell size. 4. What structures do prokaryotic and eukaryotic cell have in common? (In other words, identify the 4 basic components of all cells and state the function of each.) Describe four differences between eukaryotic and prokaryotic cellsas 5. Identify the parts of an animal cell in the diagram to the rightand on the next page by completing the table. Note that although the numbers on each picture point to the same structure, not all structures are shown in both images.

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A cell is defined as the smallest unit of an organism. It is a mass of cytoplasm that is bound externally by a cell membrane and usually microscopic in size. Most cells have one or more nuclei and other organelles that carry out a variety of tasks. The cell theory was given by Schleiden and Schwann, which was later modified by Rudolf Virchow. The three principles of cell theory are: 1. All living organisms are composed of one or more cells. 2. Cell is the basic structural and functional unit of living organisms. 3. All cells arise from pre-existing cells. Cells are so little, so they can maximize their ratio of surface area to volume. Smaller cells have a higher ratio which allows more molecules and ions to move across the cell membrane per unit of cytoplasmic volume. Cells are so small because they need to be able to get the nutrients in and the waste out quickly.