Name: ______________________________________ Date: ________________________ Student Exploration: Dehydration Synthesis Vocabulary: carbohydrate‚ chemical formula‚ dehydration synthesis‚ disaccharide‚ glucose‚ hydrolysis‚ monosaccharide‚ polysaccharide‚ valence Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. If you exercise on a hot day‚ you need to worry about dehydration. In this context‚ what do you think dehydration means? When you are exercising in the heat you
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12th 2014! The Effect of Glucose on The Cellular Respiration of Yeast! Purpose: ! The purpose of this lab is to determine if the quantity glucose solution will increase or decrease the rate at which cellular respiration occurs at within the tested 20% yeast suspension.! Question:! What are the effects of increasing or decreasing the quantity of 0.06mol/L glucose solution on the cellular respiration within the tested yeast molecules?! Hypothesis: ! When the quantity of glucose solution is increased‚
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Definitions Alpha glucose- is an isomer. The hydroxyl group is attached facing down and away from the main structure. Beta glucose- is an isomer except the hydroxyl group is attached above the ring and on the first carbon. Fructose- a sugar of the hexose class‚ and is a simple ketonic monosaccharide found in many plants‚ where it is often bonded to glucose to form the disaccharide sucrose. Sucrose- Sucrose is a sugar‚ the organic compound commonly known as table sugar‚ cane sugar‚ beet sugar or
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January 1999 B io Factsheet Example glucose fructose galactose Number 39 Carbohydrates: Revision Summary Carbohydrates contain 3 elements: Carbon (C)‚ Hydrogen (H) and Oxygen (O). Thus‚ if we remove water from carbohydrates‚ all that remains is carbon. Carbohydrates can be divided into 3 categories; monosaccharides‚ disaccharides and polysaccharides (Table 1). Table 1. Structure of monosaccharides‚ disaccharides and polysaccharides Category Monosaccharide (made of 1 sugar molecule)
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to ferment other sugars and artificial sweeteners‚ and how lactase influences yeasts ability to use lactose as a food source Kristina Naydenova Father Michael Goetz Purpose Part A: To investigate whether yeast has the ability to ferment glucose to produce carbon dioxide gas and ethanol. Part B: To investigate whether yeast has the ability to ferment other sugars and artificial sweeteners and how lactase influences their ability to use lactose as a food source. Question Part A:
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MONOSACCHARIDES STRUCTURES FISCHER HAWORTH CHAIR Glucose Fructose DISACCHARIDES (Haworth and Chair structures only) Lactose Sucrose HAWORTH CONFORMATION HAWORTH CONFORMATION CHAIR CONFORMATION CHAIR CONFORMATION Maltose HAWORTH CONFORMATION CHAIR CONFORMATION POLYSACCHARIDES Amylose CHAIR CONFORMATION HAWORTH CONFORMATION Glycogen B. BENEDICT’S TEST FOR REDUCING SUGARS Compound Color Reducing Sugar (yes/no) Water Blue No Glucose Red Yes Fructose Reddish-Orange Yes Sucrose
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Test Bacterium 2 Test Bacterium 3 Test Bacterium 4 Gram Stain Gas from Glucose Acid from Glucose Sucrose Lactose Identification Initial color of medium in Gas and Acid from Glucose test: If you have a positive test‚ describe the changes seen in the medium. What is the purpose of the Durham tube? You use the Durham tube to trap gas. Discussion o All four bacteria were able to metabolize glucose‚ but not all produced identical results. Predict the metabolic products expected
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affect homeostasis? In homeostasis‚ if the blood glucose level begins to decline‚ the pancreas releases the hormone glucagon‚ which then stimulates cells to release glucose into the blood stream. Now when the blood glucose starts to rise‚ the pancreas releases another hormone which is insulin. Insulin does the opposite of glucagon; it stimulates the cells to remove glucose from the blood. Diabetes is when the body has excess amount of glucose in the blood stream due to the pancreas not secreting
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experiment was to investigate the effect of different amounts of a substrate on the respiration rate of yeast and to compare this to the effect of different amounts of glucose on the rate of yeast respiration. The substrate which I chose to further investigate was fructose. Fructose is a fruit sugar which is one of the three‚ along with glucose and galactose‚ dietary monosaccharides that are directly absorbed into the bloodstream during digestion. Apparatus 2% yeast solution Large beaker
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lab. (Clendening 2014) The amount of glucose and glycerol were determined from the homogenate sample as well. Samples A(+) and B(-) were used to determine glucose. Sample A had 8mg/ml amylogloucosidase in .2M citrate buffer‚ pH 5.0 and was incubated at 37° Celsius for two hours to allow for the enzyme to digest the glycogen. Sample B was the control‚ where only .2M citrate buffer‚ pH 5.0 was added which was used to measure the amount of free glucose. While incubating‚ glycerol was determined
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