enzyme produced in the inner lining of the abomasum. Renin will solidify milk and makes it curdle. Curdling of milk is essential for the proper digestion of milk proteins in the stomach. (buzzle) Aim: To analyze the effect of temperature on Renin and to find the best temperature for enzyme activity Hypothesis: Renin works the best in which the rate of reaction is at the highest or optimum‚ in 40˚C Materials: • Bunsen burner • Wire gauze • Thermometer • Dropper • Mortar • Pestle •
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Questions 1. Given that cell A has significantly more nongated K+ channels than cell B‚ which cell has the larger resting membrane potential? Explain. If the permeability to K is higher in A than in B‚ then the resting membrane potential (rmp) will be closer to the equilibrium potential in cell A‚ which means the rmp will be more negative in cell A than in cell B; or in other words‚ the potential difference will be LARGER in cell A. 2. Predict the effect of a reduced extracellular concentration
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The cell wall maintains the integrity of the cell. The cell wall helps protect the cell against the environmental changes it it allows most molecules to pass through it. This layer is composed of molecules called peptidoglycans. Just inside the cell wall is a less rigid envelope called the plasma membrane also known as the cytoplasmic membrane. In bacterial cells the plasma membrane has two primary functions: it serves as a selective barrier to molecules that are penetrating the cell wall allowing
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Hypothesis The optimum temperatures of Alcalase and Savinase will be different. Above and below their optimum temperatures activity will decrease. Biological explanation This investigation is designed to look at the effect of temperature on the activity of the proteases Alcalase and Savinase. By the end of it I hope to know the optimum temperature of both proteases. The substrate I am going to use during the experiments is the protein gelatin‚ which is a translucent‚ colourless‚ brittle solid
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To investigate the effect of different caffeine concentration on the heartbeat rate of Daphnia at room temperature. Introduction: Caffeine is found‚ and produced in many plant species to function as a natural pesticide‚ and as an inhibitor of seed germination of other nearby coffee seedlings to give it a better chance of survival. Caffeine is able to paralyze and kill certain insects upon feeding on the plants that produce caffeine. Coffee‚ tea and cocoa are common caffeine-containing
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MIP experiment on the melting temperature of different polymers 8.1 Compare and comment on the results obtained. LDPE has the lowest average melting temperature (103.6°C) out of the 4 polymers. It is because LDPE is a linear polymer that has a branched structure which is able to expel the applied heat faster through the “branches” and melt faster. HPDE has the second lowest average melting temperature (139.5°C) out of the 4 polymers. Unlike LDPE‚ HDPE does not have a branched structure and the
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of the cell membrane with the correct terms integral proteins‚ channel proteins and bilipid construction. Your last paragraph was very detailed with great information about the cell membrane‚ you stated “ The cell membrane is very thin and fragile‚ and it contains two different types of proteins. “Integral proteins are part of the membrane structure and cannot be removed without damaging or destroying the membrane. Peripheral proteins are bound to the inner or outer surface of the membrane and are
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Investigate the effect of temperature on amylase activity Introduction Amylase is an enzyme that catalyses the breakdown of starch into sugars. Amylases are found in almost all plants‚ animals and microorganisms. Large amounts of amylase occur in germinating cereals‚ and in the pancreas and saliva of higher animals. Aim The aim of this experiment is to find out the rate of reaction between amylase and starch in a range of different reaction temperatures. Hypothesis As the reaction
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EXPERIMENTAL SCIENCE PROJECTS:The Effect of Salt on the Boiling Temperature of Water(Initially prepared by a 4th Grade student)To quickly jump to a section below click on:INITIAL OBSERVATIONCooking instructions tell you to add salt to water before boiling it.PROJECT TITLEThe Effect of Salt on the Boiling Temperature of WaterPURPOSE OF THE PROJECTTo find out how table salt affects the boiling temperature of water.HYPOTHESISAdding table salt to boiling water will cause the water to boil at a higher
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Bio coursework Methylene blue Yeast cells explanation of respiration hence colour change etc Low temp colour change should be visible as the yeast cells are not necessarily dead‚ just inactive. Activity increases from 20-45 c High rate around 30-40 Starts to slow down basically enzyme curve see bio 1 100 degrees will kill all cells Do a few preliminary keep working down until first blue solution appears in unit of ten Then work to find degree. If more accuracy then half
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