Exam 1 (Biol 120‚ Spring 2014) 2/21/14 12:00-12:50 pm 50 questions × 3 points = 150 points 1. Table right compares the shape and size of various prokaryotes. Which one best describes Escherichia coli? A) A B) B C) C D) D E) E 2. Which is the least permeable through the cell membrane? A) Proton B) Water C) Glycerol D) Tryptophan E) Glucose 3. Figure right shows three classes of transport systems. Which one is using energy? A) 1 B) 2 C) 3 D) 1 and 2 E) 1‚ 2 and 3 Use figure right to answer
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Oxide causing all sugar solutions to turn red-brown (Hunt‚ n.d.). Solution 1 (1% glucose solution) turned light red-brown‚ solution 3 (1% maltose solution) turned red-brown‚ solution 4 (honey solution) turned brown almost instantly‚ solution 6 (1% lactose solution) turned red‚ and solution 12 (unknown 318) turned red orange. This indicated that
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for gram-negative bacteria. It is made using 6:1 Eosin and Methylene Blue. EMB agar is a differential media and inhibits the growth of gram-positive bacteria while also using a colour indicator to tell the difference between organisms that ferment lactose and those that don’t. E. coli will give off a metallic green sheen when grown in EMB due to metachromatic properties in the dyes used‚ E. coli movement using flagella and the strong acid end products associated with fermentation. Salmonella grown
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Proteus vulgaris #12 The importance of identification of a certain microorganisms can range between a life threatening diseases to a creation of certain antibiotic. Understanding the principals of living microbes and identifying my unknown bacteria through numerous biochemical and metabolism tests‚ with the outmost confidence‚ Proteus vulgaris had the precise qualifications. The point of this report is to further explore the identification of my unknown bacteria by revealing the results of the
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Kind Bites Baked Goods Gluten Free & Vegan Baked Goods Market Segment Analysis Executive Summary Mission Objectives Competitor Analysis Market Analysis SWOT Market Plan Financials Objectives: This year: Build customer relationships At least 2 – 3 repeats a week To obtain 500 a month in revenue – increase to 1000 a month in the summer peak months Increase brand recognition by improving ease of contact and communication Booths @ local markets Next
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faecal coliforms and Escherichia coli are enumeration methods that are based on lactose fermentation (American Public Health Association‚ 1992). The Most Probable Number (MPN) method is a statistical‚ multi-step assay consisting of presumptive‚ confirmed and completed phases. In the assay‚ serial dilutions of a sample are inoculated into broth media. Analysts score the number of gas positive (fermentation of lactose) tubes‚ from which the other two phases of the assay are performed and then use
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WHY I CHOSE THE PROJECT? This project has been chosen in view of increasing demand of milk and also due to higher expectations of good quality and low fat diet requirements of the people with better awareness. Also the requirement for such quality products is more acute today. In this project I have prepared soy milk from soyabeans and have compared the conditions of formation of good quality cow milk yogurt and soy milk yogurt. I have also tried to find the effect of temperature on the pH of
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Quek Lin Yuan (25) 212 Act 2 (To be graded) In Act 2 Scene 1‚ Portia is polite towards the Prince of Morocco and assures him that she would not discriminate against him for his dark complexion and he stood and equal chance. “Yourself‚ renowned prince‚ then stood as fair / As any comer I have look’d on yet / For my affection.” However‚ at the end of Scene 7‚ we later learn that Portia is rather racist‚ as she is prejudiced towards others of a very different skin colour‚ when she says “Let all of
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Describe how Bacteria decode its genetic information to produce proteins? Intro(10mins) Bacteria belongs to a group of organism that lacks cell nucleus and membrane bound organells. This group of organisms are termed as prokaryotes. Prokaryotes follows the central dogma of molecular biology first proposed by Francis Crick in 1958 to synthesize proteins from mRNA through a process called translation and the mRNA is being synthesized from the DNA by another process called Transcription.
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experiment will also determine if our bacteria is a fermenter of sugars and if it is catalase positive. If the bacteria is a fermenter they will use the sugars to make ATP. If the bacteria is a fermenter of lactose/sucrose the EMB plate we used will “clearly differentiate between the colonies of lactose fermenting and non-fermenting microbes. In the same medium sucrose was also included to differentiate between coliforms that were able to ferment sucrose more rapidly than those that were unable to ferment
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