Lab 5 The Diffraction Grating Chinua McDonald Objective: To measure the wavelength of light with a diffraction grating. Theory: The two types of diffraction gratings are the transmission and reflection gratings. They are made by ruling on a piece of glass or metal a number of evenly spaced lines with a fine diamond point. Diffraction phenomena can be analyzed in terms of Huygens’ principle‚ according to which every point on the wave front of a wave should be considered as a source
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Topic 8: Cell respiration and Photosynthesis 8.1 Cell respiration 8.1.1 State that oxidation involves the loss of electrons from an element‚ whereas reduction involves a gain of electrons; and that oxidation frequently involves gaining oxygen or losing hydrogen‚ whereas reduction frequently involves losing oxygen or gaining hydrogen Oxidation involves the loss of electrons from an element‚ whereas reduction involves a gain of electrons; and that oxidation frequently involves gaining oxygen
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indicated by a very pale pink color. To calculate the molarity of NaOH‚ the following equation was used MNaOH x VNaOH = MKHP x VKHP therefore the molarity was .125 M. INTRODUCTION This lab experiment covers the preparation of standard solution and the acid/base titration. The first part of the lab is to prepare a standard solution of Potassium hydrogen per. A standard solution is a solution of known concentration‚ in which it is prepared using exacting techniques to make sure that the molarity
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BioLab3 Lab Report 7 Cellular Respiration Answer Key Student Name: I. The ATP Cycle Define the following terms: Autotroph Heterotroph Aerobic respiration Anaerobic respiration Complete the chart below: Letter Defining Term A B C D II. Anaerobic Respiration Define the following terms: Alcoholic fermentation EXERCISE 1 – Alcoholic fermentation At intervals of 20‚ 40‚ and 60 minutes‚ the tubes are removed. Record the
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Name: ________________________ Class: ___________________ Date: __________ ID: A GENERAL BIOLOGY PRACTICE MIDTERM TEST 2010-2011 Multiple Choice: Identify the choice that completes the statement or answers the question. ____ 1. The work of scientists usually begins with a. testing a hypothesis. b. careful observations. c. d. creating experiments. drawing conclusions. ____ 2. What is the term for all parts of Earth inhabited by living things? a. population b. ecosystem c. biosphere
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Biology Lab report #1 The uptake of neutral red dye in a yeast cell using different solutions Abstract Every cell transports materials in and out throught something called a membrane. There are many different methods of transport in the cell Saccharomyces cerevisiae (Serrano‚ 1977) We want to know does adding higher concentrations of azide more effectively block dye transport? We tested the transport of dye in yeast cells with a metabolic inhibitor. When we did this we showed no difference
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cell fragility - Osmotic Hemolysis. Retrieved on July 4 2013 from‚ http://www.medicine.mcgill.ca/physio/vlab/bloodlab/eryfrag1_n.htm Reece‚ J.B. et al. (2011). Campbell biology (9th edition). Harlow: Pearson Education‚ Inc. Transport across- Membrane Lab‚ Retrieved on July 4 2013 from‚ http://course1.winona.edu/mgarbrecht/Membrane%20Lab.pdf Why Does Milk Form a Skin When it is Heated?‚ Retrieved on July 4 2013 from‚ http://www.wisegeek.org/why-does-milk-form-a-skin-when-it-is-heated.htm
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The experiment we conducted in lab used three different species of algae‚ Macrocystis (brown)‚ Plocamium (red) and Ulva (green). Before we conducted anything‚ we first measured the initial oxygen concentration in the water that was used to house each alga. This was done because in the water that we used there happened to be phytoplankton which can respire and photosynthesize. If we didn’t take them into consideration our results would end up skewed. Once that was known we took a piece of each algae
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creates a concentration gradient‚ while O2 is reduced to H2O. In the ATP synthase‚ hydrogen ions diffuse across the semipermeable membrane and convert the potential energy of the proton gradient into chemical energy in ATP (chemiosmosis). Cellular respiration makes a total of 32
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Name and Course Section: Avital Gershtein‚ Section 701 Title: Aseptic Technique & culturing Microbes - Lab # 4 Purpose: The purpose of this experiment is to Learn and employ aseptic technique‚ to become familiar with basic requirements of microbial growth‚ to learn the basic forms of culture media‚ and to become familiar with methods used to control microbial growth. Bacteria Growth pattern after 24 hours Growth pattern after 48 hours L. acidophilus in liquid MRS broth No growth Amount of sediment
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