According to the results‚ there was no significant difference between the filtered 100% water composition‚ and the filtered 90% water 10% soap composition. However‚ based on fFigure 2‚ the Average of Absorbance graph‚ showed that growth of the algae for the 100% water composition was observed to be slightly higher than the 90% water 10% soap composition. Meaning the soap may have slightly affected the growth of the algae‚ in some way. One possible‚ reason for a slightly higher growth for the filtered
Premium Water Liquid Soap
The majority of the experimentation in this project relied on the idea that there is a relationship between concentration and absorbance of a solution. This is easy to understand if you can visualize the particles in the solution; and this is especially true if the particles in solution portray a distinct color. The more particles there are in the solution‚ the more they will obstruct the path of the light. This occurs the most at the analytical wavelength‚ where the most light is absorbed by
Premium Light Chemistry Electromagnetic radiation
solution. You will be using the colorimeter. In this device‚ red light from the LED light source will pass through the solution and strike a photocell. The CuSO4 solution used in this experiment has a deep green color. A higher concentration of the colored solution absorbs more light (and transmits less) than a solution of lower concentration. [Content Standard B- Structure and properties of matter] The colorimeter monitors the light received by the photocell as either an absorbance or a percent transmittance
Premium Chemistry Chemical reaction Oxygen
orientation‚ and reproductive. Orientation is when the organism is placed in their beneficial environment consisting of two behaviors‚ taxis (movement directly towards or away something) and kinesis (random movement). Reproductive is detected using drosophila in this lab‚ it consists of finding courting and mating with another of the species Agnostic behavior is found in a situation where the animal feels threated by another‚ leading to the organism looking bigger or more threatening to the opponent.
Premium Fishkeeping Fish
TITLE OF EXPERIMENT 2 : DILUTION 2.1: OBJECTIVES Upon completion of this experiment‚ students should be able to: 1. determine the concentration of coloured solution such as FeCl3 by using dilution and colour differentiating (colorimetric) techniques. 2.2: INTRODUCTION Concentration can be expressed in many different ways such as percentage volume and percentage weight etc. In laboratory‚ normally concentrations were expressed as molarity and normality. Molarity is the
Premium Concentration Chemistry
General Biology I‚ Fall 2011 Lab Report 3 Name: Luan Nguyen Date: 11-30-11 Lab: Gel Electrophoresis Purpose of this lab: In this laboratory investigation‚ students will analyze hypothetical human DNA using restriction endonucleases and gel electrophoresis to match samples from a crime scene to a suspect. Introduction: Your analysis unit will use gel electrophoresis to determine the guilty party. Electrophoresis is a technology in science that allows an individual to separate
Premium DNA Molecular biology Electric charge
Fresh potatoes extract in phosphate buffer pH6 containing the enzyme: polyphenol-oxidase‚ was used as the variable being tested in this experiment. You may refer to the Enzymatic Reactions Biology 21 Lab Manual. Santa Monica College by Logan‚ R. 2003 to see how the potatoes extract in phosphate buffer was made. We began this experiment by measuring seven constant amounts of 1ml of 0.1% catechol using a 1 mL pipet into each seven cuvettes. The catechol is our substrate solution. Next‚ different amounts
Premium Enzyme Concentration Chemistry
work. Experiments described were performed by me and/or my lab group and this write-up is entirely my own creative work.” X________________________________________ Introduction Enzymes are protein molecules that speed up the rate of reactions by reducing the activation energy of a reaction. They act as catalysts in reactions‚ increasing the rate at which a normally spontaneous reaction occurs without being changed themselves. Without enzymes‚ life would not exist because they are vital to the normal
Premium Enzyme Chemical reaction Catalysis
Introduction to Microbiology Laboratory report №10 Physical factors affecting growth microbes: Temperature‚ pH and oxygen requirement. Student: Temirlan Aitbekov Lab partner: Kanat Sadykov Instructor: Alessandra Clementi‚ MD‚GP Lab date: 7/11/14 Due date: 14/11/14 Nazarbayev University Abstract: This experiment is directed
Premium Microbiology PH Bacteria
I) Introduction In this lab‚ a test was conducted to determine how the relative redox activity of chloroplasts from spinach leaves‚ which were performing photosynthesis‚ would change when in the presence or absence of light. To observe these changes in redox activity‚ the chloroplasts were exposed to DCPIP‚ a chemical that changes color according to such activity. By determining the redox activity of the chloroplasts‚ it could then be inferred which chloroplasts were photosynthesizing more actively
Premium Experiment Photosynthesis Null hypothesis