IB Biology Potato Lab Table 1: Trial Number | Concentration of Sucrose Solution (M) ±0.2 ml | Initial Mass of Potato Core Slice(g) ±0.1 | Final Mass of Potato Core Slices (g) ±0.1 | 1 | 0.0 | 7.7 | 9.3 | 2 | | 6.0 | 8.1 | 3 | | 6.2 | 7.4 | 4 | | 10.2 | 13.2 | 5 | | 8.7 | 10.3 | 6 | | 4.9 | 6.0 | 7 | | 9.2 | 10.4 | 1 | 0.2 | 5.8 | 6.0 | 2 | | 11.6 | 12.1 | 3 | | 2.5 | 3.1 | 1 | 0.4 | 14.4 | 13.9 | 2 | | 2.6 | 2.8 | 3 | | 8 | 6.5 | 1 | 0.6 | 7.3 | 5.3 | 2
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GCSE - Human Physiology and Health An experiment to investigate what affect sucrose solution has on potato tissue. Background Osmosis is the movement of water molecules‚ across a partially permeable membrane from a region of high concentration of water to a low concentration of water molecules. A partially permeable membrane is a membrane with holes in it small enough for only water to go through it. Big molecules like glucose cannot fit through it. Osmosis allows plants to take in water
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Potato Catalysis Lab Pre-Lab Assignment Background Information: An enzyme is catalytic protein. It is the most important type of molecule found in living cells. Cells would not be able to function without enzymes. Enzymes speed up or slow down chemical reactions of the cells. It is usually easy to identify the names of enzymes because they end in -ase. The enzyme that acts upon the substrate hydrogen peroxide is usually called catalase. This enzyme is found in both plants and animals
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because the high amount of salt causes more dehydration. Variables: Independent- Salt Solution Dependent- Mass of Potato Control- Tap Water Materials: •Tap Water (50 ml for each cup) •Salt •Beaker •3 cups •3 pieces of potato •Scale Procedure: Step 1: Gather Materials. Step 2: Weigh each potato separately on the scale and record weight in grams on table. Step 3: Put each potato in a separate cup and add 50 ml of water to each cup‚ measure with beaker. Step 4: To create the 40% salt solution
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Based on the result‚ what is known now is when osmolarity is low‚ the hemolysis is high; while when osmolarity is high‚ the hemolysis is low. This supports the hypothesis if the erythrocytes were placed into a high osmotic solution‚ then the erythrocytes would have a lower hemolysis percentage. As shown in graph 1‚ when the erythrocytes were placed into the tube containing 250 to 390 osmolarity of solution‚ the erythrocytes results in below 26 hemolysis percentage. When the erythrocytes were placed
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Aim To observe and measure the effect of osmosis on the mass of potato using a starch solution. Introduction In order to measure the effect of osmosis‚ eighteen pieces of potato were cut and placed in six groups‚ each group of three pieces cut to weigh as close as possible to one another. For each potato group‚ a test tube was half filled with a starch solution varying in concentration from 0% (water) to 1%. Hypothesis Through osmosis
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Mass % of Sucrose in Chewing Gum Purpose To find the mass percentage of sucrose in chewing gum and compare the actual mass to the mass indicated on the package and compare the masses to that of different brands of chewing gum. Hypothesis The theoretical mass percentage of sucrose (C12H22O11) in chewing gum. Materials - Sample of chewing gum + wrapper - Electronic balance Procedure 1. Form groups of 3‚ and distribute a different brand of gum to each member of the group. 2. Record the brand
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How to Write a Lab Report Lab reports are formal papers that describe and analyze lab experiments. They follow a very specific format. If you study this paper carefully and follow its directions‚ you will find that these papers are not at all difficult and can have a positive impact on your Biology grade. Paper formatting: The paper should be typed and double spaced. Use a standard 12 point font (do not use cute fonts or colored paper!). Except for the title and abstract – each section
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carbon. Sugar contains sucrose which is the common saccharide in many plant parts. Sucrose (sugar) is composed of 12 carbon atoms‚ 22 hydrogen atoms and 11 oxygen atoms. Therefore‚ the chemical formula of compound sugar C12H22O11. Figure 1‚ shows the structure of sugar as a 3D diagram. Figure 2‚ is a demonstration of the structure of sugar in a 2D diagram. The molar mass of compound sugar is 342.2965g/mole with a density of 1.59g/cm3 and a melting point of about 186
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This was conducted through four different experiments. The first tested the effect of temperature on enzyme activity. The independent variable in the first experiment was the temperature of the solution of pH 7 buffer‚ potato juice‚ and the enzyme. The independent variable for the second experiment was the pH of the phosphate buffer. The independent variable for the third experiment was the enzyme concentration of the solution‚ and finally the independent variable of the
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