Chapter 1: The Main Themes of Microbiology What is Microbiology? • micron = small and biologia = study of living things • Microbiology = study of small living things • How small is “small”? • What do we really mean by living? • Working definition: Study of entities too small to be seen with the unaided human eye. • (< 0.2 mm = 200 µm = 200‚000 nm) Types of Microbes Prokaryotes include Bacteria and Archaea Eukaryotes include Protista (Algae and Protozoa)‚ Fungi‚ and Animalia
Premium Microbiology Bacteria
Importance of Microbiology| in Nursing Agriculture Pharmacy Advertisement Microbiology is a subject dealing with microbes and related concepts. Microbiology has come a long way since discovery of microbes and is presently of great help to mankind. It is used in health care‚ food production‚ diagnosis‚ production of alcohol‚ maintenance of sterility and cleanliness etc. Though the subject was initially limited to study of microbes and their characteristics or properties‚ latter it was explored to
Premium Bacteria Microbiology Microorganism
virus too small to be seen without a microscope (smaller than 0.5mm) Misconceptions of Microorganisms * All microorganisms are pathogenic (disease producing) FALSE * The majority of bacteria are harmless and beneficial TRUE Aspects of microbiology * Basic biological science * About living cell and how they work * About microbial diversity and their evolution * Applied biological science * What microorganisms do; their role in the nature? * Causative agents
Premium Bacteria DNA Cell
Lab 6 Biomechanics of Frog Skeletal Muscle I. Purpose This exercise is designed to demonstrate some mechanical and physiological properties of skeletal muscle using the gastrocnemius muscle of a frog. II. Performance Objectives At the end of this exercise the student should be able to: 1. Define minimal (threshold)‚ subminimal‚ maximal‚ and supramaximal stimulus. 2. Explain what is meant by a “graded” response. 3. Draw a diagram of the setup used in this lab exercise. 4. Calculate the
Premium Muscle contraction Muscle Muscular system
kingdom of microorganisms was brought into life 3 billion years ago. Since then «the earth is a fundamentally a microbial planet‚ to which the micro-organisms are recent the relatively unimportant additions» (Wheelis‚ Mark‚ Principles of modern microbiology‚ 2008‚ p.1). The term microorganisms consist of bacteria‚ archaea‚ fungi‚ and protest‚ which can either be unicellular or multicellular. They first have been studied by Anton van Leeuwenhoek by the use of his own design microscope‚ in 1675. However
Free Bacteria
Bacterial Morphology MLT1 Task 11- Lab 2 Johnny Archuleta Western Governors University Question A and C answers. A wet mount stain is when a drop of water is placed onto the microscope slide. The water on the slide helps to support the organism and sample. The water fills the space between the cover slip and the slide. This action allows the light from the microscope to pass through the slide and the sample for better visualization of the organisms. A direct stain occurs when a charged
Free Bacteria
POLHN Microbiology Student Name: SOKOPETI FAKAOSIFOLAU. Assessment 6 – Gram negative bacilli 1. Which of the following is not true of Enterobacteriaceae? a. Gram negative bacilli b. Oxidase positive c. Reduce Nitrate to Nitrite d. Ferment glucose with acid production 2. Which of the following organisms does not belong to the Enterobacteriaceae group? a. Shigella flexneri b. Eschericia coli c. Proteus mirabilis d. Pseudomonas aeruginosa 3. Name the four species of Shigella
Premium Bacteria Microbiology Escherichia coli
Lab 11: Animal Behavior Introduction Ethology is the study of animal behavior. There are two specific categories of behavior: learned ad innate. Orientation behaviors place the animal in their specific environment. Animals move away from sensory input in taxis where as behavior is the response to sensory input. Stimulus’ of light‚ heat‚ moisture‚ sound‚ or chemicals are mostly found in taxis. Kinesis is the movement that does not result in orientation with stimulus. When animals respond to each
Premium Psychology Biology Behavior
revealing the results of the experiments and comparing them to the other six known bacteria: Micrococcus luteus‚ Staphylococcus aureus‚ Staphylococcus epidermidis‚ Alcaligenes faecalis‚ Escherichia coli‚ and Proteus vulgaris that were used in the lab‚ as well as comparing and contrasting the actual and factual results. Its unique pink rod shaped morphology was the first step observed under the microscope to identify its unknown characteristic. There were other methods utilized in lab as well: the Mannitol
Premium Bacteria Escherichia coli Microbiology
Microbiology: An Introduction‚ 10e (Tortora et al.) Chapter 14 Principles of Disease and Epidemiology Test Bank 1) A commensal bacterium A) Does not receive any benefit from its host. B) Is beneficial to its host. C) May be an opportunistic pathogen. D) Does not infect its host. E) B and D only. Answer: C media. B) Some microorganisms don’t cause the same disease in laboratory animals. C) Some microorganisms cause different symptoms under different conditions. D) Some microorganisms can’t be observed
Premium Bacteria Infectious disease Infection