CELL STRUCTURE CELL THEORY: Structural and functional unit of all living things New cells arise from already existing cells Cells contain information that instructs growth. This information can be passed onto new cells. MICROSCOPES: There are two main types of microscopes: Light and Electron Electron Micrographs- shown in colour LIGHT ELECTRON Uses beam of light Magnification = x1500 Resolution = 200 nm Wide range of specimens can be used Samples are fairly quick + easy to prepare
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___Ch. 5 Homeostasis & Transport (FIB) ___Diagram #10 Contractile vacuole ___Diagram: #12a Endoctosis (page 103) ___Diagram #12b Exoctosis (page 104) ___Diagram Fluid Mosaic Model on loose leaf (p 74 in text) ___Diagram Facilitated diffusion on loose leaf(page 99) ___Ch 5 Homework Questions ___Osmosis problems Homework (6 problems) ___Ch. 8 Mitosis Introduction (FIB & diagrams) ___Ch 8 Mitosis & Meiosis (FIB) complete ___Diagram #3 Phases of Cell Cycle Pie Chart ___Diagram
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Diffusion and Osmosis Using “Deshelled” Chicken Eggs Introduction In order for a cell to survive and function‚ it must maintain an internal steady state of environment in the midst of an ever-changing external environment. This steadiness is provided by the regulation of the movement of materials across its plasma membrane. Since not all substances penetrate the membrane equally well‚ the membrane is said to be differentially permeable. (IS) Diffusion is the tendency of molecules
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Q.How did trade networks in the post-Classical era compare to the Classical era? A.There were more‚ larger‚ and better trade networks which means the bigger the network the more supplies and agriculture comes in which can create food surplus which leads to growth in population social classes and a golden age for the empire. Q.What new technologies‚ governmental policies‚ and merchant activities accompanied these developments? A. Innovations in transportation‚ state policies‚ and mercantile practices
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discussions and decision making? Facilitating not dominating: By allowing others to also join the discussion and share their views and ideas. Encourage healthy debates: By making sure the debates are based around ideas not around certain people. Simulating Discussion: Ask open ended questions‚ support participants when they speak‚ paraphrase and brainstorming sessions Based on your meeting purpose and the agenda you created in Assessment Task One‚ what are the desired outcomes of your meeting?
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Chapter 3 Cell Structure and Function Section 3.1: Cell Theory: Cells are the smallest building unit of living organisms that can carry out all processes required for life. Almost all cells are too small to see without the aid of a Microscope. Although glass lenses used to magnify images for hundreds of years‚ they were not enough to reveal individual cells. The invention of Compound microscope was in the late 1500s by the Dutch eyeglass maker Zacharias Janssen. In 1665‚ the English scientist
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person. A person with pneumonia has extra fluid in the alveoli‚ resulting in slower gaseous exchange and therefore a lack of oxygen. Diffusion can distribute molecules quickly over a short distance but is very slow over more than a few centimetres. Temperature – Increasing temperature will also increase kinetic energy‚ therefore molecules will move faster in diffusion and osmosis. The average speed of molecules depends on temperature and the mass of
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Key Learning: All living things are made up of one or more cells. Cells come in a variety of shapes and sizes that suit their diverse functions. Cell membranes help organisms maintain homeostasis by controlling what substances enter or leave cells. UEQ: How can we describe the relationship between structure and function in prokaryotic and eukaryotic cells? Concept 1: Cell Structure and Function SC.912.L.14.3 SC.912.L.14.2 Content coverage LEQ: Number 1: What is the relationship between
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against the gradient‚ it is active and requires energy. Passive transport describes the movement of substances down a concentration gradient and does not require energy consumption. There are many types of passive transport‚ for example: Diffusion‚ diffusion is the net movement of substances from an area of higher concentration to an area of lower concentration. This movement occurs as a result of the random and constant motion characteristic of all molecules‚ atoms‚ or ions (due to kinetic energy)
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split the reactant into two or more products. 3. A. The difference between facilitated diffusion and active transport is facilitated diffusion goes from a high concentration to a low concentration and it does not require ATP. Active transport goes from a low concentration to a high concentration and requires ATP. In active transport the molecules are carried against the force of diffusion however in facilitated diffusion that energy is not
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