is often used to differentiate between groups of organisms with the same morphology and biochemical resemblances. Eosin Methylene Blue (EMB) is an example that can be used to differentiate between various Gram (-) rods of the intestinal tract. Escherichia coli and other enteric bacteria are able to ferment. Lactose fermentation results in a colony color change ranging from pink to purple. Determination of oxygen requirements is a test to determine whether a microbe is an obligate aerobe‚ anaerobe
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Chapter 25: Environmental Microbiology Question Type: Multiple Choice 1) Which would not be the habitat for terrestrial species of some microorganisms? a) desert b) tundra c) tropical rain forest d) freshwater lake Answer: d Difficulty: Easy Learning Objective 1: LO 25.1 Explain the concept of ecosystems and how energy flows through them. Section Reference 1: Section 25.1 Fundamentals of Ecology 2. Microbes in the environment can be _____. a) producers b) consumers c) decomposers d) all
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PLEASE READ ALL NOTES AND COME PREPARED FOR CLASSES 1. Diet has always played a vital role in supporting health. As a result‚ improper nutrition can put us at risk of becoming malnourished. Define the term malnutrition. Malnutrition means an incorrect or unbalanced intake of nutrients e.g. obesity‚ kwashiorkor… ……any condition caused by excess or deficient food energy or nutrient intake or by an imbalance of nutrients. 2a. Complete the following table: Food groups | Main nutrients
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cell wall and are not washed away easily. 4. Attach photos on JPEG format showing a gram positive and gram negative bacterial sample showing their gram staining reaction. Give the name of the bacterial cells‚ shapes and arrangement. (9 marks) Bacillus cereus: Rod shaped and chain arrangement‚ Gram positive http://aapredbook.aappublications.org/content/1/SEC131/SEC143/F178.large.jpg Neisseria gonorrhoea: Coffee bean shaped and diplococcus arrangement‚ Gram negative http://upload.wikimedia
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Exercise 3.9 Endospore Stain (Differential Stain) Eula Lewis Bio 2921 February 27‚ 2013 Zere Ezaz‚ Ph. D. Objective: 1. To learn to endospore stain 1. To distinguish endospores‚ free spore‚ and vegetative cells Theory: A dormant form of bacterium that allows it to survive poor environmental conditions are called endospores. Their tough outer covering is made of keratin and is also the reason they are resistant to heat and chemicals. The strength of keratin also makes it resist
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Bacterial Biology █ BRIAN D. HOYLE An understanding of the fundamentals of bacterial biology is critical to bacteriologists and other forensic investigators attempting to identify potential biogenic pathogens that may be exploited as agents in biological warfare or by bioterrorists. Fundamentals of Bacterial Biology Bacteria are one-celled prokaryotic organisms that lack a true nucleus (i.e.‚ a nucleus defined by a membrane). Bacteria maintain their genetic material‚ deoxyribonucleic
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Review all chapters in your exercise manual beginning with the introduction INTRODUCTION: (Covered 9.4.14 II Week 1) Biosafety levels1: basic level of containment. Hand washing or wearing gloves 2: Appropriate for working with human body fluids. Autoclave‚ sharps containers‚ lab coats 3: appropriate for working with pathogens that can be transmitted via respiratory route. Self-closing‚ double doors and sealed windows 4: Highest level. Aerosol pathogens; pathogens with no vaccine/treatment. Separate
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Erika Crans Unit 4 Assignment 2 Dr. J April 13‚ 2015 GUILLAIN-BARRE SYNDROM Guillain-Barre syndrome is a rare disorder in which your body’s immune system attacks your nerves. Instead of your immune system fighting of illnesses‚ it attacks the myelin sheath surrounding the nerves. The myelin sheath is destroyed‚ and the damage prevents the nerves from transmitting signal to the brain. It spreads very quickly and is considered a medical emergency in its most severe form. The syndrome usually
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Conditions causing respiratory failure: Condition that affects the flow of blood into the lungs: Pulmonary embolism- blocks blood flow and causes lung damage Conditions that affect the nerves and muscles that control breathing: Muscular dystrophy ALS (amyotrophic lateral sclerosis) & Spinal cord injury Conditions that affect the areas of the brain that control breathing: Stroke & Drug/alcohol overdose Conditions that affect the flow of air in and out of the lungs: COPD (chronic
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in the lower respiratory track. Different types of microorganism cause this infection‚ but the most common one is RSV (Respiratory Syncytial Virus). Other microorganisms include parainfluenza viruses type 1 and 3‚ adenoviruses‚ rhinoviruses‚ and Mycoplasma pneumonia. RSV is a small‚ labile paramyxovirus that produces inflammation and tigers the creation of mucus. This virus is transmitted by indirect/direct contact with infected sources. Once the test shows positive the patient will be isolated
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