Kaitlyn Camp 111-501 The Properties of Water; Osmosis and Diffusion Report In the process known as “osmosis”, a solvent will permeate from a solution of low solute concentration to a solution of high solute concentration. Due to this process, there are three terms that are used when describing solute concentrations in a solution relative to another. These terms are: isotonic, hypertonic, and hypotonic. According to the lab manual, isotonic is when “two solutions, separated by a semipermeable membrane
Objective: This lab was done to help understand restriction enzymes and how they work. As well as comprehend the correlation between these enzymes and DNA Fragments. This lab was conducted to estimate the size of unknown DNA fragment thru agarose gel and electrophoresis. Background: A restriction enzyme is a protein that recognizes a specific, short nucleotide sequence and cuts the DNA only at that specific site, which is known as restriction site or target sequence. Restriction enzymes
Lauren Calso September 29, 2014 BIOL 240 Lab Report Gram Stain Introduction Various methods are used to identify unknown bacteria. A popular method to determine unknown bacteria is called a Gram Stain. A stain is coloring a specimen with dye. A Danish physician named Hans Christian Gram developed the Gram stain method in 1844. He studied at the University of Copenhagen and became a professor of Medicine. When differentiating between two types of pneumonia, he found that most bacteria are either
Acid-Base Titration Lab Report By Andjela Mandic 11/24/14 Period 1 Purpose: The purpose of this experiment was to find the molarity of a sodium hydroxide (NaOH) solution by titrating it with a Hydrochloric Acid (HCl) solution. Materials: Burets (50mL), Buret Stand, Buret Clamp, Graduated Cylinder (10mL), Erlenmeyer Flask (125mL), Index Card, Beakers (250mL), Safety Goggles, Aprons, 0.100M HCl (standard solution), NaOH (concentration unknown), Distilled Water, Indicator (bromothymol
F60B01 CELLS AND MOLECULES PRACTICAL 2: DETERMINATION OF WATER POTENTIAL OF POTATO STRIPS LABORATORY REPORT REPORT BY: - CHIN YI JING (024492), CHOONG XIN YUN (024423), LEE GAH NI (024320), RENAD SADIG (024598), and SAI SAMHARINI D/O VIGNESWARAN (024429) Introduction In order for the cells to be able to maintain their metabolic functions, various biological molecules need to pass into and out of the cell. This can be achieved by transport processes, which can be broadly classified into passive
Construct an ice bath by filling a large beaker half way with ice and then water where it is just covering the ice. Now, put 75 mL of distilled water into a small Erlenmeyer flask and place that into the ice bath. This will cool the water so it will not dissolve your aspirin when you quantitatively transfer it from the Erlenmeyer flask to the Buchner filter. Weigh out approximately 2.5+ or – 0.25 grams of
of the chromatography lab is to separate mixtures using horizontal paper chromatography and ascending chromatography. Using these methods the individual colors within a black dye will be separated and two unknown metal ions in can be identified from a solution. Skills required for this lab are analyzing, identifying unknown separable mixtures. Paper chromatography works majorly on capillary attractions. Capillary attraction depends on adhesive and cohesive forces. This report describes the experiment
Introduction to Chemistry Lab 5 Pre-lab Questions 1. In terms of food, what is a calorie? In terms of food, calories are the measurements of how much energy that particular food contains. 2. A piece of chocolate chunk cookie was tested the same way as is used in this procedure. The cookie sample had a mass of 0.851 g and the temperature of a 100.0 mL of water increased by 7.87 ⁰C. How many Calories per gram did the cookie contain? Show all calculations. First of all, the mass of water will equal the
gloves • Avoid aerosols • Care must be taken when heat fixing slide Materials • Glass slide • Loops • Sterile normal saline • Burner • Stains Method i. Add one drop of sterile normal saline or distilled water on a clean glass slide ii. With a sterile loop add 1 colony of bacterial growth to the water,
1. Title: Determination of Vitamin C concentration in water relative to temperature variations. 2. Introduction Vitamin C or in other terms ascorbic acid or ascorbate is a substance which is soluble in water. It is found in a varying concentrations in vegetables and fruits. Vitamin C is a vital nutrient for human constitution, however it cannot be produced by humans on the contrary to animals with few exceptions. So, humans need in certain amounts of Vitamin C in their daily diet. Vitamin C is