(4:15 minutes) Procedure: Include the answers to the questions below in your lab report. Lab Questions: This procedure is used to separate what two types of bacteria? This separation is based on differences in what physical trait? What is the iodine used for in this staining technique? Why is it important to heat fix the bacteria prior to the staining procedure? If you had a bacteria sample that you knew to be gram positive but your gram stain results indicated that it was gram negative‚ how
Premium Gram staining Staining
Chemicals in medicines Rakesh Mohan Hallen The words medicine’ and ’drug’ are often used in our country to mean the same substances: any substance‚ manufactured artificially‚ which can help recovery from sickness‚ relieve symptoms or modify a natural process in the body. A medicine is often a mixture of several chemical compounds. Even if it has only one active component compound often other substances are used as fillers or binders to give it bulk. Chemistry‚ the science related to chemical substances
Premium Antiseptic Bacteria Chemical compound
BIOLOGY LABORATORY Biologically Important Molecules Carbohydrates‚ Proteins‚ Lipids‚ and Nucleic Acids Objectives In this lab you will learn to: 1. Perform tests to detect the presence of carbohydrates‚ lipids‚ proteins‚ and nucleic acids 2. Recognize the importance of a control in a biochemical test 3. Use biochemical tests to identify an unknown compound Introduction Organic molecules are those primarily made up of carbon‚ hydrogen and oxygen. The common organic compounds of living
Premium Amino acid Glucose Protein
repeated using hexane as the solvent instead of water. Part II: Solubility Testing of the Halogen Make baseline observations of what each of the ions and molecules looks like in water and in hexane. First‚ 1mL of the aqueous (water) solution of iodine will be added to a test tube using a dropper in lieu of a graduated cylinder. Appearance of solution will be recorded. Then‚ 1mL of hexane will be added to the test tube mix. Observations of both layers will be recorded. Process repeated for bromine
Premium Chlorine Electronegativity
Biological Currency The objective of this lab is to figure out whether or not this money is counterfeit. We will attempt to find the information needed to prove that the money is counterfeit or not by looking at it under a microscope and by using iodine drops to compare the money’s result with the results of different items. Counterfeiting money is not a new to any country. It started when paper money was first made. Some countries attempt to counterfeit rivals money to drive their economy downward
Premium Economics United States Money
Title : The Vitamin C content of fruit juice Aim : To investigate the vitamin C content of fruit juice. Introduction : [2]Vitamin C‚ also known as the ascorbic acid or the L-ascorbate‚ is required for the growth and repair of tissues in all parts of our body. It is necessary to form collagen‚ an important protein used to make skin‚ scar tissue‚ tendons‚ ligaments‚ and blood vessels. Vitamin C is essential for the healing of wounds as well as for the repair and maintenance of cartilage‚ bones
Premium Vitamin C
PLANNING COURSEWORK- STARCH AND AMYLASE AIM The aim of this coursework is to investigate the effect of temperature change‚ on the rate of hydrolysis of starch catalysed by amylase. PREDICTION I think that as the temperature increases‚ the rate of reaction also increases‚ to a point when it dramatically decreases. On graph 1‚ you will see a sketch of the graph which I expect to be the result of the experiment. SCIENCE REASONING I think my prediction is correct because the rate of
Premium Enzyme Chemical reaction Catalysis
polymer (Figure 1). The long chains of glucose that make amylose form a tight helix. If we mix an iodine solution with the amylose‚ the iodine will lodge itself in the interior of the helix. This causes the solution to turn a dark blue color. If the enzyme amylase is added to the solution first‚ it will chemically remove one glucose monomer at a time from the ends. Addition of iodine to this solution does not give a blue color but will be colorless (Distinguish between
Premium Starch Enzyme Amylase
permeability against starch and glucose molecules. APPARATUS: 4 Test Tubes Cellophane Tubing Elastic Band 2 beakers Glucose solution Starch solution 2 Syringes Pipette Hot Plate. Test Tube rack. Benedict’s Solution Iodine Solution Safety Aspects Safety aspects that need to be considered during the experiment are to provide caution whilst handling benedict’s solution as it can be caustic to the skin and eyes. As a safety measure wear a
Premium Osmosis Glucose
Name: Nyam Poh Ye Partner’s name: Liew Teck Seng Class: P1 Date of lab class: Thursday‚ 7-2-2013 Program: Foundation In Science Unit code: FHSC 1214 Unit description: Fundamentals of Cell Biology Year and trimester of study: 2013‚ trimester 1 Title of lab report: Practical 2 Investigation of Action of Saliva and 3 M Hydrochloric Acid in Two Carbohydrate Solutions Lecturer’s name: Mr. Paul Davidson Discussion
Free Enzyme Starch Glucose