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Experimental Design Rubric 1. You've already rated students with this rubric. Any major changes could affect their assessment results. Edit criterion description Delete criterion row.
Edit rating Delete rating. Hypothesized relationship between the variables and the predicted results is clear and reasonable based on what has been studied. Hypothesized relationship bewteen the variables and the predicted results is reasonable based on general knowledge.
Hypothesis is stated but does not clearly show the relationship between the variables and the predicted outcome. Hypothesis is included, but does not demonstrate a cause and effect relationship. This area will be used by the assessor to leave comments related to this criterion.
All materials and setup used in the experiment is clearly and accurately described. Most of the materials used during the experiment are listed and described.
Many materials are omitted and the ones posted are not described as needed. Listed in clear, concise and numbered steps. The steps are easy to follow and sequential. All steps are written in complete sentences. Listed and numbered. The steps are sequential. Most steps are written in complete sentences. There are a few steps that are unclear. Does not accurately list the steps of the experiment. Presentation is in a unique or professional format.
Data is accurately represented in data tables and graphs. Format of data tables and graphs clearly represents the data. Presentation is in an appropriate format. Format of data tables and graphs represents the data sufficiently. Format sufficiently displays data collected. Data is represented in tables and graphs.Dependent and Independent Variables.
Animal and Plant Cell Parts. Cellular Pursuit also useful for Unit 3. Enzyme-controlled Reactions also useful for Unit 3. Cell Reproduction also useful for Unit 4. Blood Pressure. Classifying Arthropods. Earthworm Dissection. Plant Transpiration. Ecosystems, Organisms, and Trophic Levels. Communities and Biomes. Model Ecosystems. Tracking Grizzlies. Population Biology. Energy in a Cell. Virtual Pathology.
Punnett Squares. Sex-linked Traits. Knocking Out Genes. Gene Splicing. DNA and Genes. Natural Selection.
Biology (Mader), 10th Edition
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Blog at WordPress. Dependent and Independent Variables 2. Animal and Plant Cell Parts 3. Cellular Pursuit also useful for Unit 3 4. Enzyme-controlled Reactions also useful for Unit 3 5. Blood Pressure 2. Classifying Arthropods 3. Plant Transpiration 2. Ecosystems, Organisms, and Trophic Levels 3. Model Ecosystems 2. Tracking Grizzlies 3.Last reviewed: March A catalytic protein produced by living cells. Chemical reactions involved in the digestion of foods, the biosynthesis of macromolecules, the controlled release and utilization of chemical energy, and other processes characteristic of life are all catalyzed by enzymes Fig.
Hundreds of reactions can proceed simultaneously within a living cell, and the cell contains a comparable number of individual enzymes, each of which controls the rate of one or more of these reactions. In the absence of enzymes, these reactions would not take place at a significant rate.
Indeed, enzymes are such efficient catalysts that they accelerate chemical reactions measurably even at concentrations too low to be detected by most protein assays. In addition, enzymes promote the chemical processes of life without being themselves altered or destroyed. See also: Catalysis and catalysts ; Cell biology ; Cytochemistry ; Protein.
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Contributors include more than 10, highly qualified scientists and 45 Nobel Prize winners. Chemical structure and activity Classification and nomenclature Control of enzyme activity Proenzyme activation Feedback inhibition and enzyme repression Enzyme induction Specificity Related Primary Literature Additional Reading.
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About AccessScience AccessScience provides the most accurate and trustworthy scientific information available. Download the flyer Get Adobe Acrobat Reader.Overview: In this investigation, you will determine the effects of substrate concentration and pH on the rate of an enzyme-catalzyed reation.
Foods that contain large amounts of starch, like bread, may acquire a slightly sweet taste as they are chewed because amylase degrades that starch into sugar. In the reaction shown, the enzyme is the amylase and the substrate is starch. The program measures the amount of produce produced after the reaction has progressed for 1 minute, allowing you to compare rates of reaction by looking at the amount of end product.
Procecure: The simulation allows you to change two variables: pH level and the amount of available substrate. Data from the simulation can be viewed by clicking on the computer monitor. Data: Collect data for each of the variables and complete the table below. The data collected is "number of molecules of product formed per minute.
Use a graphing program like Exel or "Google sheets" to graph the data showing 5 separate lines for each pH level. Attach this graph to this worksheet when you turn it in.
To get started, you will be copying the data on the table above to your spread sheet. Identify the dependent and independent variables hint: there are two independent variables you investigated, but only one dependent variable. Describe the relationship between substrate and the product. What happens when you increase the amount of substrate?
Predict what would happen if you used Explain why the maximum initial reaction rate cannot be reached at low substrate concentrations.
What is the optimum pH level for this enzyme? How do you know? Enzymes function most efficiently at the temperature of a typical cell, which is 37 degrees Celsius. Increases or decreases in temperature can significantly lower the reaction rate. What does this suggest about the importance of temperature-regulating mechanisms in organisms? Publisher: Biologycorner.NFL regular season wins and match-ups are based on teams completing all 16 regular season games, and for CFL all 18 regular season games, unless the remaining games during the course of the season do not affect the result.
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Enzyme Virtual Lab
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