AP Bio Lab - Diffusion and Osmosis
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Diffusion
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Living Environment - Lab Review
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Living Environment Part D (Required Labs) Review Beaks of Finches 14 Species of Darwin?s finches Beaks vary in size and shape Bodies vary in size and shape Beaks of Finches Different beak sizes and shapes differ in their efficiency at performing particular tasks. Beaks of Finches Why do offspring of better-adapted individuals inherit many of their parents? favorable variations? Beaks of Finches Why do offspring of better-adapted individuals inherit many of their parents? favorable variations? Favorable variations allow parents to survive and then reproduce more. Their offspring then may possess those variations. Beaks of Finches What are the parts of Darwin?s theory of Natural Selection? Beaks of Finches What are the parts of Darwin?s theory of Natural Selection?
Living Environment- Lab Summaries
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Living Environment Part D (Required Labs) Review Beaks of Finches 14 Species of Darwin?s finches Beaks vary in size and shape Bodies vary in size and shape Beaks of Finches Different beak sizes and shapes differ in their efficiency at performing particular tasks. Beaks of Finches Why do offspring of better-adapted individuals inherit many of their parents? favorable variations? Beaks of Finches Why do offspring of better-adapted individuals inherit many of their parents? favorable variations? Favorable variations allow parents to survive and then reproduce more. Their offspring then may possess those variations. Beaks of Finches What are the parts of Darwin?s theory of Natural Selection? Beaks of Finches What are the parts of Darwin?s theory of Natural Selection?
AP Human Geography Chapter 1 Part 4
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Chapter 1, Part 4 Presentation borrowed from ?Osman Human Geography PowerPoints? Globalization The spread of economic activities from one country to many other regions. The establishment of integrated industrial and service sectors world-wide. Primarily an economic factor, it has enormous social and political consequences. 2 Principle factors-Transnational Corporations-most HQ in US, Europe or Japan have offices and production facilities in many parts of the world. These TNCs become dominant economically and politically in the countries where they operate. In many cases their total income exceeds the entire GNP of the host country. E.g. Wal-Mart earns more income than most Central American nations.
Pearson Biology Guided Reading Answers Chapter 5
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Chapter 5: The Working Cell Copyright ? 2015 Pearson Education, Inc. 33 Name ________________________ Period _________ # 152826 Cust: Pearson Au: Reece Pg. No. 33 Title: Active Reading Guide for Campbell Biology: Concepts & Connections, 8e C / M / Y / K Short / Normal DESIGN SERVICES OF S4-CARLISLE Publishing Services Chapter 5: The Working Cell Guided Reading Activities Big idea: Membrane structure and function Answer the following questions as you read modules 5.1?5.9: 1. Every cell has a(n) ________________ that allows it to maintain a cellular environment that is separate from the environment in which it is found. 2. Which of the following best describes the structure of a plasma membrane? a. Proteins sandwiched between two layers of phospholipids
Pearson Guided Reading Activities KEY CH5
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Chapter 5: The Working Cell Copyright ? 2015 Pearson Education, Inc. 33 Name ________________________ Period _________ # 152826 Cust: Pearson Au: Reece Pg. No. 33 Title: Active Reading Guide for Campbell Biology: Concepts & Connections, 8e C / M / Y / K Short / Normal DESIGN SERVICES OF S4-CARLISLE Publishing Services Chapter 5: The Working Cell Guided Reading Activities Big idea: Membrane structure and function Answer the following questions as you read modules 5.1?5.9: 1. Every cell has a(n) ________________ that allows it to maintain a cellular environment that is separate from the environment in which it is found. 2. Which of the following best describes the structure of a plasma membrane? a. Proteins sandwiched between two layers of phospholipids
bio 211 quiz
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Study tips for Quiz 3 Fluid mosaic membrane model Selective permeability: control what goes in and out of cell Compartmentalization: different processes can be separate Phospholipids-main component of membranes (50% by weight) Structure: hydrophilic heads faces out (water loving) polar surface Hydrophobic tails face in (weather fearing) non-polar region Interior 1972 singer and Garth Fluid- lipids and proteins can move relative to each other within membrane The typical membrane structure consists of a phospholipid bilayer with a number of proteins scattered throughout, along with some carbohydrates (glycoproteins), glycolipids and sterols, similar to the way in which one does a mosaic tile, hence the name. molecules involved in membrane transport Pg 107 fig 5.12
AP Bio Lab write up #1: osmosis and diffusion
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Diffusion and Osmosis Introduction: Atoms and molecules are constantly in motion. This kinetic energy causes the molecules to bump into each other and move in different directions. This motion is the fuel for diffusion. Diffusion is the random movement of molecules from an area of higher concentration to an area of lower concentration. This will occur until the two areas reach a dynamic equilibrium. When this dynamic equilibrium is reached the concentration of molecules will be approximately equal and there will be no net movement of molecules after this point. The molecules will still be in motion but the concentrations will remain the same.
Diffusion of one solute.
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the membrane has pores large enough for molecules of dye to pass through.This leads to a dynamic equilibrium: The solute molecules continue to cross the membrane, but at equal rates in both directions.
Types of Diffusion
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Relocation diffusion: The spread of an idea throuhg physical movement of people from one place to another.
Expansion Diffusion: Spread of an idea from one play to another by snowballing.
Hierarchal Diffusion: Spread of an idea from people of authority
Contagious Diffusin: Rapid and wide spread diffusion of a characteristic throughout the population
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