Arushi Grover ‚ Sheldon Fernandes‚ Jervis Fernandes‚ Lisha Almeida Silvia Fernandes‚ Krisann Garrard. The effect of Lead Toxicity on Pollen germination. Received: 15th February 2012 Abstract: Pollen obtained from the Hibiscus rosa-sinensis‚ commonly known as the Hibiscus flower were exposed to different concentrations of Lead to understand the effect of heavy metal on pollen tube germination. Heavy metals such as Lead‚ have shown to decrease the pollen germination and inhibit pollen
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Case Scenario 1- Ethan the puppy: Ethan is a 7-week-old Rottweiler puppy that has been with his new family for 3 days. The client contacted the clinic at 8am this morning to make an appointment for 10am for Ethan’s first vaccination. When talking to the client upon arrival to the clinic his family comments to you that Ethan has been quiet and sad for the last 24 hours with a small amount of diarrhea produced at 10am yesterday and 3 am this morning. There are no notes about his illness on the appointment
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Date: 14th-15th October Title: The effect of the concentration of hydrogen peroxide on catalase Aim: to examine how the concentration of the hydrogen peroxide affects the rate of reaction Hypothesis: The substrate concentration will determine the rate of reaction. The reaction will increase as the concentration increases‚ but from a certain concentration‚ the rate will maintain the same rate Materials: 3% hydrogen peroxide 6% hydrogen peroxide catalase round metal basin measuring cylinder
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Chap-3: Assessing Martin Manufacturing’s CASE Current Financial Position Terri Spiro‚ an experienced budget analyst at Martin Manufacturing Company‚ has been charged with assessing the firm’s financial performance during 2006 and its financial position at year-end 2006. To complete this assignment‚ she gathered the firm’s 2006 financial statements (below and on the facing page). In addition‚ Terri obtained the firm’s ratio values for 2004 and 2005‚ along with the 2006 industry average ratios
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from the same period last year. This decline in production at this mine was a result of lower grades and throughput. According to COO Gord Stothart‚ “The decline in grade year-over-year was due to pit sequencing which offset the benefits from better dilution control through our RC drilling. Throughput was lower than the previous year due to an extended time mill shutdown in the quarter and the treatment of a higher proportion of hard rock than we saw a year ago.” However‚ to mitigate the affect of declining
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PRACTICAL 6: OSMOREGULATION AND EXCRETION Introduction Many animals need to control the water content of their body because the concentration of their body fluids is different to that of their environment. The process by which the amount of water and concentration of soluble ions in the body are regulated is called osmoregulation. In most cases the organs which are responsible for osmoregulation are also involved in the excretion of metabolic waste products. In this practical you will
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Determination of Vanillin in Imitation Vanilla Essence Chloe Nolan 14832679 Introduction 4-hydroxy-3-methoxybenzaldehyde or as it is better known‚ vanillin is most commonly used to create imitation vanilla essence (Southam‚ 2013). Figure 1: vanillin structure Vanillin was first synthesised from eugenol from 1874 – 2001‚ from where it was later made from lignin- containing sulphite liquor which is a by-product of wood pulp processing in paper pulp manufacturing‚ most recently it is
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killed by other animals? -Scavenger 13. It is a component of the ecosystem pertaining to the community of living organisms and the aspects of the environment pertaining directly to them. Biotic. 14. What is the BOD5 of a sample of wastewater with a dilution of 1:10‚ initial DO of 18 mg/L and final DO of 4 mg/L? 140 15. Which of the following is not a measure of water quality? solids 16. These are interacting groups of organisms in which each organism has a specific niche. Communities 17.
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Results Calculation a) 50ml of suspensions containing 5% w/v of sulpharmerazine which containing 10-2‚ 5 x 10-3‚ 10-3‚ 5 x 10-4‚ 10-4‚ 5x 10-5‚ and 10-5 molar concentrations of Calcium Chloride. ( 10-2 are provided ). By using this formula‚ we can get the amount of calcium chloride to be added in making 50 ml suspensions containing 5% w/v of sulpharmerazine. M1V1 = M2V2 M2 = 5 x 10-3‚ 10-3‚ 5 x 10-4‚ 10-4‚ 5x 10-5‚ and 10-5 M ‚ V2 = 50ml M1 = 0.01M Thus‚ V1 = ( M2 . V2 )
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Experiment 1 Laboratory Techniques and Measurements Purpose: To determine measurements of different items that vary from solids to liquids and be able convert those values to other SI units of measurement. Procedure: I used a variety of scientific tools such as; a ruler‚ beaker‚ graduated cylinder‚ volumetric flask‚ thermometer‚ burner‚ and digital scale to find unknown values of measurements for each of the indicated
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