The effect of salt concentration on grass growth Abstract Our aim was to test the effect of different salinities on the growth of plants which what we did was measured different amounts of salt dissolved into 2 litres of water‚ watered the plant once with the salt water then for 9 days with pure ware. I found with my investigation that the less the salt‚ the more the growth of the plant. My aim was achieved by measuring the 5 fastest geminating (out of 20) and to measure the differences in growth
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Investigating the effect of temperature on plant cell membranes The purpose of this activity is: • to practise experimental and investigative skills • to investigate the effect of temperature on cell membrane structures Procedure SAFETY: Always carry scalpels clasped to a tile and with the tip pointing away from you. Beetroot cells contain pigments called betalains that give the tissue its dark purple-red colour. The pigment is contained in the cell vacuole. Investigation
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RUNNING HEAD: AQUARIUM DIFFERENCES 1 Freshwater vs. Saltwater Aquariums C. Kevin Barr ENG121 Andrea Bear August 28‚ 2012 AQUARIUM DIFFERENCES 2 Freshwater vs. Saltwater Comparison There are many differences when it comes to freshwater versus saltwater aquariums. We ’ll try and shed some light on some of the differences when it comes to tank types‚ aquarium
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Lab Report Effect of temperature on enzyme activity I. Purpose: Determine how effect of temperature on enzyme (catalyse) activity (in the liver). II. Materials * Raw liver * Forceps * 50mL 1% hydrogen Peroxide (H * 25mL graduated cylinder * 50mL‚ 400mL beakers * Pureed liver * 5 Filter-paper disks * Paper towels * Timer or stopwatch * Thermometer * Hot plate III. Procedure 1.Gather all necessary materials; start
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The Effect of Temperature on the Enzyme Catalase Stephen Francis Biology 183 Abstract This experiment was performed to determine the resultant effect of temperature change on the reaction between the enzyme catalase and hydrogen peroxide. This experiment was performed by measuring and comparing the amount of oxygen bubbles produced and the absorbance of the catalase and hydrogen peroxide solution over time at room temperature‚ 2°C‚ 50°C‚ and 60°C. The overall result of this experiment proved
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Fresh water always freezes at 0℃‚ but that is not always so for water with salt inside. The higher amount of salt there is in the water‚ the more the freezing point decreases. So‚ salt water freezes later than freshwater. The exact measurement of how they impact each other is this: every 5 psu increase‚ the freezing point decreases by 28%.. In an ocean‚ there is frazil and brine. Frazil are ice crystals suspended in water‚ and they are made of nearly pure freshwater. Frazil is the first stages of
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In the beginning salt water and regular water got along. They all lived in the same ocean and each droplet would live in harmony. They shared the undersea environment with all the fish and sea plants. Some plants and animals needed salt water more than fresh water and some needed fresh water more than salt water. This is where the problem all started. The fresh water began to become jealous because the salt water was mocking the fresh water about them being the best type of water. It started out
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…………………KEY……………………… Matter & Energy Period …………. Skills 1. classifying types of matter 2. interpreting particle diagrams 3. identifying physical & chemical properties of matter 4. separating Mixtures 5. converting Temperatures 6. identifying physical & chemical changes in matter Skill #1: Classifying types of matter - refer to your notes and RB p. 1-2 Classify each of the following with the combination of terms listed below. pure substance – element mixture
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Usman Omid Biology IB 1A The Effect of Temperature on Beetroot Membranes _Aim_ This practical will test the effect of temperature on the integrity of the membranes‚ _Introduction_ The cells of beetroot contain a pigment called betalain in their vacuoles. It is kept inside the cells by the membranes. If these membranes are damaged‚ then the betalain leaks out. The amount that leaks out can be assessed‚ as the leaked out pigment will color the water surrounding the cells. This information can
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phosphorylase in particular) are affected by varying its temperature before introducing it to the substrate it will be reacting with. A catalyst (enzyme) is a substance that changes the rate of a reaction; for a reaction to take place at all‚ the enzyme must first come into contact with the substrate. Enzymes are subject to a number of factors which effect how fast they can cause a reaction with a substrate; these factors include temperature‚ pH levels‚ chemical substances and the concentration of
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