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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What affect does the concentration of sugar have on the rate of respiration of yeast? Apparatus: 1. Stopwatch with a resolution of 0.001 seconds 2. 4 test tubes 3. 200 ml of yeast in a beaker 4. 200 ml of glucose solution 5. 500 ml of limewater 6. 2 delivery tubes 7. 1 test tube rack 8. 1 water bath set to 37°C 9. 2 pipettes 10. 3 measuring cylinders with a resolution of 1ml‚ ranging from 0-30ml. 11. 200 ml of water Hypothesis: The higher the concentration
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The Variation of Yeast Cells When Adding an Antibiotic Biology 1401- A October 21‚ 2013 Abstract. -- The main focus in this experiment was to find out if antibiotics affect yeast cells culture when added. The observation of the two cultures along with the yield of yeast cell reproduction between the two cultures was the sole purpose of the experiment; culture-A (- antibiotic) and culture-B (+ antibiotic). Our hypothesis stated whether antibiotic effects yeast cells cultures. This theory was
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4.NORSYAWANI BINTI SUPIAN (E20131007577) LECTURER : CIK FATIMAH EXPERIMENT NO. : EXPERIMENT NO.1 TITLE : EXTRACTION OF DNA DATE & DAY : 24 JUNE 2014 TITLE: EXTRACTION OF DNA OBJECTIVE: Extract DNA from yeast‚ onion and apple. INTRODUCTION: Every cells of living organism contains genetic materials known as deoxyribonucleic acid‚ DNA. It can be isolated from tissue sample of living things by separating it from other cellular component in a manner that
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Back Laboratory Program SAFETY IN THE CHEMISTRY LABORATORY 786 Pre-Lab Extraction and Filtration 790 1-1 Mixture Separation 792 1-2 Water Purification 794 3-1 Conservation of Mass 798 4-1 Flame Tests 801 Pre-Lab Gravimetric Analysis 828 13-1 Separation of Pen Inks by Paper Chromatography 830 13-2 Colorimetry and Molarity 834 14-1 Testing Water 838 804 7-1 Separation of Salts by Fractional Crystallization 806 7-2 Naming Ionic
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Ash Chen IB Economics SL Mr. Murf Exchange Rates and The Balance of Payments Exchange Rates Living in the 21st century‚ trading has become a major component of our global economy. However‚ with over 200 countries and 180 currencies in the world‚ countries cannot trade with each other without a way to pay each other in their currency. Thus‚ in order to trade‚ countries have developed a formula to convert their money to that of another country’s. That formula is the exchange rate. The exchange
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ATLANTIC COLLEGE CHEMISTRY DEPARTMENT (Written by Dr Geoffrey Neuss) CONTENTS Page Introduction 1 Assessment of Practical Work 3 Error and uncertainty 7 Significant figures 8 Title 1. Some common chemical reactions. 9 2. A traditional acid-alkali titration. 10 3. Analysis of aspirin tablets
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Pre-Laboratory Questions 1. Yeast cells look like separate little spheres; they cannot walk or swim. Brainstorm methods by which yeast cells might communicate with each other. Record your list of possibilities in the space below. I. Signal Cascade II. Hormones III. Pheromones IV. Receptors embedded in the cell V. Growth near another cell Guided Activity: Table Charts Alpha – Type Culture Single Haploid Cells Budding Haploid cells Time 0 Field 1 3 3 Field 2 1 1 Field 3 8 2
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1. Why are spindle fibers important for mitosis? (5 points) Spindle fibers work as a path for chromosomes to travel(Campbell‚ 2009). 2. State the four bases that make up DNA. (4 points) a. (A)-Adenine b. (G)-Guanine c. (T)-Thymine d. (C)-Cytosine (Campbell‚ 2009). 3. What are the two base pairs? (2 points) a. AG b. CT 4. Answer the following questions: a. Define the term crossing over. (3 points) The phase in meiosis where chromosomes exchange segments of genetic materials (Campbell‚ 2009). b. Explain
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Examples of IB Exam papers_P2s Yellow: Single party states Green: The Cold War “In order to achieve and retain power a leader of a single-party state needed to be ruthless‚ blind to human suffering and yet charismatic.” To what extent do you agree with this assertion? Account for the rise to power of one of the following: Castro; Mussolini; Nasser‚ Hitler‚ Stalin‚ Mao. How‚ and to what extent‚ did the conferences at Yalta and Potsdam (1945) contribute to the origin of the
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