Bio Lab Lab 6 Corn Syrup Aloe Vera Gel Time Blue Dye Red Dye Blue Dye Red Dye 10 sec 1 cm 1cm 1cm 1cm 20 sec 2cm 2cm 1.5cm 2cm 30 sec 2cm 1cm 1.5cm 2.5cm 40 sec 2cm .5cm 1.5cm 2.5cm 50 sec N/C .5cm N/C N/C Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 20.00mm 600mm/hr Red Dye 496g 45.00mm 1350mm/hr Aloe Vera Gel Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 15mm 450mm/hr Red Dye 496g 25mm
Free Diffusion Molecular diffusion Starch
Safety Concerns in the Laboratory Safety goggles must be warn at all times during a lab session. This is very important because they protect your eyes from harmful matter such as chemicals‚ glass‚ and fumes. It is very important to note that they must be goggles and not glasses. Safety glasses may protect the eyes from flying debris and splashes but may not protect the eyes from gas fumes or splashes from underneath. Also‚ wearing contact lenses in a chemical laboratory without proper coverage
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Lab: Cellular Respiration in Yeast Lab Report Form Your Name: Katlin Moore “What do you think? – What do you know?” Questions: In this lab‚ we will investigate the effect of sucrose concentration on the rate of cellular respiration in yeast. Under specific conditions‚ yeast will convert sucrose into glucose and then use this glucose in cellular respiration. Yeasts have been used by humans in the development of civilization for millennia. What is yeast? How have humans used yeasts?
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Calorimetry Lab Problem: Which foods have the most calories? Hypothesis: If we burn the food then the heating released will be measured as calories because the energy stored inside is released as heat and light. Parts of the experiment Control Group-water Experimental Group- different foods Independent variable- Type of food Dependent Variable- temperature of water Controlled variables- water temperature of unheated water Materials Stirring Rod‚ Beaker‚ ring clamp‚ evaporating disk‚
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during the acid-fast procedure‚ they are able to retain the primary dye even when decolorized by a powerful solvent known as acid alcohol. Most other bacterial genera are easily decolorized by acid alcohol. Ziehl/Neelsen Acid-Fast Staining Procedure In later years‚ Ehrlich’s technique was improved upon by two microbiologists‚ Ziehl and Neelsen. Like Ehrlich‚ Ziehl and Neelsen’s procedure requires heat to force the primary dye through the cell wall. Another microbiologist‚ Kinyoun‚ developed a
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Information of Michael King’s lab sheet can state two conclusions. The first conclusion that can be stated from information of the lab is water seeped through some of the oil. The density of the water was 1.1 g/mL and the soap was 1.446 g/mL‚ the soap was clearly denser than water. For proof that the water seeped through the soap Michael King’s observation sheet of water stated: “The water is leaking down into the soap‚ but still sits on top of the dish soap.” Later through his observations it elaborates
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Food and Nutrition Exam Study Guide Kitchen Safety: * Do not defrost any meats on counter * Unplug any appliances that are not in use * Only use oven mittens to remove items from the oven * Burns should be treated with butter * When removing a pot lit‚ tilt the cover away from you * Keep fingers out of the way when using knives * Cut with blade facing away from your body * Sharp knives are safer; you’ll use less pressure when cutting * To get rid of grease
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Report Submitted 11/27/12 Title: Caloric Content of Food Purpose: to be able to measure the energy content of foods Procedure: We are going to take food items and burn them to heat water to be able to determine the amount of “energy” a food source can emit. Data Tables: |Data Table 1: Food Item - Observations | |Food Item Description: |Marshmallow
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Writing of Lab Reports __________________________________________________________________________ W hy should I bother writing lab reports in the correct way?” The Foundation Programme is designed to prepare you for undergraduate studies at UTAR which will require the writing of lab reports all years generally. At the end of your third year‚ you may have an opportunity to work on scientific projects which will culminate in an official scientific report. Depending on the quality of your report
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Healthy food vs. Fast food Many years ago‚ people ate food that do not contains‚ preservatives; moreover‚ people used to spend a lot of time cooking their own food. Therefore those people did not have problems by the food that they ate‚ because all the food that they ate was natural and healthy. However‚ nowadays many people‚ particularly young people prefer to eat fast food such as hamburger‚ pizza or fried chicken. As we can see there are two kind of food: healthy food and fast food. One way to
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