Camren Allen Concept Check 1.1: 1.) A biosphere has an ecosystem that consists of all living things in an area. An ecosystem consists of communities which hold organisms that live in a specific area. A community consists of populations of all the individual organisms in a specific area. A population consists of living things called organisms. Organisms break down into organs and organ systems which are more complex parts of organisms. Organs and Organ Systems are created by tissues which is
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Brian Toohey Biology Mrs. Heimforth 12/06/10 Diffuse the Osmosis Section 2: Introduction Step 1: The scientific concept of this lab was to see how osmosis transferred the substance through the cells to reach equilibrium. Step 2: My hypothesis was that the bag with 60% sucrose then it would be heavier than the bag with tap water or 30% sucrose. I thought this because I thought that there would be more of a substance change in 60% sucrose. Section 3: Methods First get 3 pieces of the same
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Alisha Prakash Biol 111-513 The Properties of Water; Osmosis and Diffusion Hypothesis: When animal and plant cells are placed in a solution‚ the movement of water is effected by the solute concentration of the solution. If animal and plant cells are placed in a more concentrated solution‚ the solution becomes hypertonic to the cells‚ causing water to exit the cells. This changes the appearance of the cells‚ causing the cells to look darker (more concentrated) and shriveled up. Null Hypothesis:
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Danielle Christian AP Bio FRQ #2 January 22nd‚ 2013 A.) Graph #1 A.) Calculation The rate of reaction from 0-30 minutes is 0.34667; r=10.4μM /30 minutes B.) Explanation The reaction was observed after 30 minutes because the reaction rate eventually slows down and the enzyme reaches its maximum potential. Since the enzyme is using the substrate so quickly‚ the substrates concentration depletes. That means the rate will slow down. Our graph shows that after about 40 minutes‚ the enzyme
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principles behind diffusion and osmosis. Permeability‚ concentration gradients‚ plasmolysis‚ water potential‚ and equilibrium were also concepts that were delved into in this lab. Understanding how diffusion and osmosis works is essential to understanding biology. Each time a cell has something move into or out of it‚ some sort of principle studied in this lab is occurring. Diffusion‚ osmosis‚ and passive and active transport are all fundamental concepts of Biology. This lab simulated osmosis in the cell
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AP Bio DNA‚ RNA‚ Protein synthesis Study Guide DNA Structure Nucleotide structure - sugar‚ phosphate group‚ base backbone structure - alternating sugar and phosphate group directionality (5’-3’) - DNA is anti parallel. The side that sticks out s the 5’ side bases - adenine = thymine & guanine=cytosine purines vs Pyrimidines - purines have two rings while pyrimidines have one ring Bonding - hydrogen bonds Base Pairing rules - look at bases ^^ DNA Replication Semi-conservative replication
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Sam Rausser Wednesday‚ August 17‚ 2011 3:38 PM Once glucose is made‚ glucose molecules can be converted (by plants) to… 1) monosaccharides‚ like fructose 2) Disaccharides a. Maltose (glu‐glu) seeds b. Sucrose (glu‐fru) sugar cane‚ sugar beets 3) Polysaccharides a. Starch‚ food storage in roots (chains of glucose) b. Cellulose‚ plant structure (chains of glucose) 4) Amino Acids a. Glucose + N from ground 5) Lipids‚ specifically oils which are energy source in seeds & phospholipids found in membranes
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Occurrence of Osmosis and Diffusion in Artificial and Living Cells | David Michael | March 24‚ 2011 | Partners: Fady Guirguis‚ Klaus Blandon‚ and Mauricio Rodriquez. | | * Table of Contents I. Abstract 3 II. Introduction 4 III. Materials and Methods 9 IV. Results 15 V. Discussion 18 VI. Works Cited 23 * Abstract This lab focuses on the understanding of osmosis and diffusion in a practical sense. It allows the conductor to see what factors affect diffusion and osmosis. This
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1.) Roots support photosynthesis and respiration by absorbing minerals and water and by storing organic nutrients. They also anchor the plant. Some roots have mycorrhizae‚ which increase the surface area and therefore increase the absorption. The endodermis‚ which is the innermost layer of cells in the root cortex‚ surrounds the vascular cylinder. It is the passage of minerals from the cortex into the vascular tissue. The stem has a system of nodes where leaves are attached. They have a waxy
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