Topic LOs - Topic LOs Cells: Cell theory & cells;...

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Topic LOs Cells: Cell theory & cells; Eukarya, Bacteria and Archaea: Describe the cell theory. [Knowledge, Comprehension] The cell theory has 3 main points: 1. All organisms are made of 1 or more celles 2. The cell is the smallest unit that has the properties of life 3. Cells arise only from the growth and division of preexisting cells Relate the cell theory to the theory of evolution. [Comprehension, Analysis] -All cells came from preexisting cells, similarly; all organisms came from preexisting organisms. • Define DNA, RNA, protein, metabolism, anabolism and catabolism. [Knowledge] -DNA: Large, double stranded, helical molecule that contains a unique alphabet that provides the instructions for assembling many of the important components of a cell organism from simpler molecules. -RNA: Directs the production of protein molecules -Protein: Molecules that carry out most of the activities of life, including the synthesis of all other biological molecules. It consist of 1 or more polypeptides -Metabolism: The biochemical reactions that allow a cell or organism to extract energy form its surroundings and use that energy to maintain itself, grow and reproduce. -Anabolism: Energy is consumed to build complex molecules from simpler ones. -Catabolism: Energy is released to break down complex molecules to simpler ones. • Describe the "information system" of the cell, including the roles of DNA and RNA in this system. [Knowledge, Comprehension] - • Describe the structure of DNA, using the appropriate terminology for components and characteristics of this molecule. [Knowledge, Comprehension] - DNA is a double helix molecule that is held together by hydrogen bonds. Nitrogen bases make up the rungs and the rails are made of phosphate and sugars (alternating) • Describe, at a general level, metabolism.[Comprehension] -Metabolism involves two processes: Catabolism(break down) and Anabolism(build up)
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• Describe how oxidation-reduction reactions are important in cells, providing an example. [Comprehension] -In our cells we oxidize food molecules and use some of the liberated energy to reduce other molecules. Cellular respiration is a good example. • Provide an overview of photosynthesis and cellular respiration. [Comprehension] -Photosynthesis: Uses the energy that light provides in order to create sugar(glucose molecules). Cellular respiration is the reverse, it will break down glucose to release energy. • Explain, at a general level, the role of ATP in metabolism. [Comprehension] -ATP can be broken down to release energy and an inorganic phosphate and ADP. This energy fosters anabolic reactions which require energy • Describe the basic structure of all biological membranes. [Comprehension] The basic structure of the cell membrane is a phospholipids bi-layer. This contains proteins, cholesterol and carbohydrates. • List the common components and characteristics of all cells. [Knowledge]
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Topic LOs - Topic LOs Cells: Cell theory & cells;...

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