Streak plate techniques - Study guides, Class notes & Summaries

BIOS 242 Week 1 Assignment; Lab 2 of 14 Onsite - Isolation of Pure Cultures Lab 2: Techniques for Isolation of Pure Cultures Learning Objectives: Isolate pure cultures from a mixed population of microorganisms using aseptic technique. Learn the streak plate method Introduction: Microorganisms exist in nature as mixed populations of different species. In order to study them and observe their characteristics it is first necessary to obtain pure cultures (a culture ...

Lab 2: Techniques for Isolation of Pure Cultures Learning Objectives:  Isolate pure cultures from a mixed population of microorganisms using aseptic technique.  Learn the streak plate method VIDEO:  Making a streak Plate (Bio-Rad Laboratories) Introduction: Microorganisms exist in nature as mixed populations of different species. In order to study them and observe their characteristics it is first necessary to obtain pure cultures (a culture containing only one species of an o...

Biol 1020 lab final Exam and A+ Answers Liquid media used to increase the number of microorganisms. - Broth Solid media used to isolate microbes - agar plate Normal flora bacteria used for studies involving osmotic pressure, antibiotic resistance, and biofilms. - S. epidermidis Clump of genetically identical microorganisms. - colony forming unit Single-celled fungi used for studies involving fermentation, genetics, and aging. - S. cerevisiae instrument used for spreading microorganis...

LABORATORY MANUAL OF FOOD MICROBIOLOGY FOR ETHIOPIAN HEALTH AND NUTRITION RESEARCH INSTITUTE (FOOD MICROBIOLOGY LABORATORY) UNIDO PROJECT (YA/ETH/03/436/11-52) DEC. 2003 DRAFTED BY DR. CIIRA KIIYUKIA (INIDO / FOOD ANALYSIS – MICROBIOLOGY) 1 TABLE OF CONTENTS INTRODUCTION.....................................................................................................4 MICROORGANISMS MORPHOLOGY AND STAINING.............7 MICROSCOPY............................................

Ocular/eyepiece - Answer-2 eyepieces 10x magnification move in or out to adjust positioned correct=single circle of light Body - Answer-Holds mirrors that bend light into oculars images reversed and inverted Nose piece - Answer-Where objectives are attached Objectives - Answer-Contain magnifying lenses 4x, 10x, 40x, 100x Arm - Answer-Supports nose piece Holds power switch Holds focus adjustment knobs Stage - Answer-Flat platform that holds mechanical stage Mechanical Stage - Answer-...

MICROORGANISMS MORPHOLOGY AND STAINING.............7 MICROSCOPY.....................................................................................................................7 STAINED PREPARATIONS ...................................................................................................7 MAKING A SMEAR.............................................................................................................8 A SIMPLE STAIN........................................................

Microbiology EXAM 1 (Chapters 1,3,4 and 6) Questions With Complete Answers. microobiology The study of organisms too small to be seen with the naked eye is _______ viruses, bacteria, algae, protozoa, fungi and helminths What are the six major groups of microorganisms? 3.5 billion years ago Single celled organisms arose ______ million years ago and have been shaping our earth ever since Eukaryotes = have a true nucleus (include protozoa, fungi, plants and animals) Prokaryotes= lack a tr...

Microbiology Lab Review Questions with Certified Answers Explain why the body tube of the microscope should not be lowered while you are looking through the ocular lens. to ensure that the slide or lens is not broken For what purpose would you adjust the Iris diaphragm? adjust the amount of light coming through the specimen For what purpose would you adjust the course-adjustment knob? to bring the specimen into view For what purpose would you adjust the fine adjustment knob? to bring the spe...

Convert Celsius to Fahrenheit - ANSWER - F = (9xC)/5 +32 = How many decimel places, to the right of base - ANSWER - Six places --- .000 000 nm= How many decimel places, to the right of base - ANSWER - Nine places --- . 6.02x 10 = moving the decimel over how many spaces? - ANSWER - 23 Compare and contrast these three techniques by where bacteria grow in the media - ANSWER - Streak Plate - bacteria grow only on the surface Pour Plate - bacteria grow throughout the media Spread Plate ...

Microbiology Lab Exam 1 Questions and Answers Rated A when viewing a smear with the oil immersion lens the final magnification is 1000x;10x ocular x 100X objective what is the purpose of heat fixing kill the bacteria, adhere to glass anddenature the proteins of bacteria name oneof the stains or regents used in the gram stain procedure gram crystal violet, gram iodine, gram sfaranin, 95% ethanol why are aseptic techniques used in the lab? to ensure that we do not contaminate what we are workin...