1. Active Transport- the movement of substances across cell membranes from low to high concentrations‚ requiring energy and proteins that act as carriers 2. Adenosine triphosphate- chemical compound consiting of one molecule of adenine‚ one of ribose‚ and three of phosphoric acid 3. Anaphase- a late stage of cell division during which chromosomes move to the poles of the spindle 4. Benign-nonmaligment 5. Cell-basic unit of structure and function for all living things 6. Cell membrane-the membrane
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Honors: Chapter 4 Practice Exam Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Which of the following statements does not describe force? a. Force causes objects at rest to remain stationary. b. Force causes objects to start moving. c. Force causes objects to stop moving. d. Force causes objects to change direction. ____ 2. Which of the following forces arises from direct physical contact between two objects? a. gravitational force
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Active transport: requires that a cell expend energy to move molecules across a membrane against the solute’s concentration gradient (the side where it is more concentrated) Feedback inhibition: Metabolic reaction is blocked by its products. A product acts as an inhibitor of one of the enzymes in the pathway to regulate metabolism. Centriole: a structure in an animal cell composed of microtubule triplets arranged in a 9+0 pattern. An animal usually has a pair of centrioles within each of its centrosomes
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Active and passive transport are the ways in which cells allow things to move into and out of the cell through the cell membrane. They include many different ways to transport things. Passive transport requires no expenditure of energy by the cell. However‚ Active transport requires ATPs which have energy in order for it to move something through the cell membrane. There are different types of transport to suit the sizes of molecules as well. Passive transport includes diffusion‚ osmosis‚ and
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Active and passive transport are biological processes that move oxygen‚ water and nutrients into cells and remove waste products. Active transport requires chemical energy because it is the movement of biochemicals from areas of lower concentration to areas of higher concentration. On the other hand‚ passive trasport moves biochemicals from areas of high concentration to areas of low concentration; so it does not require energy. Comparison chart Active Transport Passive Transport Definition Active
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Homework Assignment Modules 14‚ 15‚ and 16 Due Date: April 1‚ 2012 Module 14: Fixing errors in Grammar and Punctuation Identify and correct the errors in the following sentences. a. Company’s are finding it to their advantage to cultivate their suppliers. Partnerships between a company and its suppliers can yield hefty payoffs for both company and supplier. One example is Bailey Controls‚ an Ohio headquartered company. Bailey Controls make control systems for big factories. They treat suppliers
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can form lipid bilayers. It is an amphipathic molecule. The head which is hydrophilic contains a group of phosphate‚ a diglyceride and a simple molecule e.g. choline. The tail is hydrophobic and is made up of fatty acids. Phospholipids receive and transmit signals across the cell membrane and act as a store room for energy. The main role of phospholipids is that they can form lipid bilayers. It is an amphipathic molecule. The head which is hydrophilic contains a group of phosphate‚ a diglyceride and
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Diffusion‚ Osmosis and Active Transport Substances will move through the membrane by diffusion. This is the random spreading out of particles until they are even. For example‚ when you put your instant coffee in boiling water‚ the coffee particles spread out and fill the entire mug‚ this is diffusion. A second way that substances can move through the cell membrane is by osmosis. This is a special type of diffusion where water moves from a high to a low concentration through a ’partially permeable
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1. Which of the following statements reflect the constitutional structure within the Articles of Confederation (1781-1789)? Approval of policies and treaty ratification required nine affirmative votes. State courts retained jurisdiction over most legal matters‚ except in cases of inter-state conflict. State governments would implement and pay for congressionally-approved policies. Any constitutional amendments required unanimous approval of all 13 states. All these answers are correct. 2. In
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Portfolio B has 100 shares. Because of diversification‚ we know that Portfolio B will have the lower systematic risk ie. Portfolio B will have the lower beta. a) True b) False c) Not enough information given d) None of the above. 3. Which of the following statements about risk is false? a) Risk requires at least one outcome less favourable than the
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