Free Essay

Microbiology Task 12 Yeast, Molds and Fungi

In:

Submitted By kaitlin6146
Words 822
Pages 4
A. Describe conidiospores and sporangiospores. 1. Identify a mold that produces each of these spores. Molds reproduce primarily by means of asexual reproductive. Conidiospores (conidia) a unicellular or multicellular spore that is not enclosed in a sac. Penicillium and Aspergillus are examples of molds that produce conidiospores. Penicillium is a common household molds and a food contaminant. Sporangiospores are formed within a sporangium (sac). Sporangia are formed at the end of aerial hyphae called sporangiophores e.g. Rhizopus can cause wounds and respiratory infections in the host with a compromised immune system (Gladwin, & Trattler, 2011).
B. Describe a zygospore. 1. Identify a mold that produces zygospores. A thick-walled spore of fungi that is formed by union of two similar sexual cells, usually serves as a resting spore, and produces the sporophytic phase an example is rhizopus. It’s a black mold and grows on old bread and fruits.
C. Describe what type of growth you observed in each of your substrates (e.g., number of colonies, shape, color, and defining characteristics). I saw about three different types of fungi on the bread. There was a dark green and white while the cheese only had some green fungi and all the colonies were all attached to each other looking like a sponge. On the strawberry I noticed a whitish-greenish-grey growth also with the hyphae growing outwards. It was all around the strawberry and the colonies was about 3 growing towards each other. On the tomatoes I noticed very a lot of green-bluish and white colonies, I think there is grey also Its all over the tomatoes. The yogurt had a dark grey lump of growth on top of it. It looked like it was floating but it is not. The corn had a white and brown growth. It looked long and stretching down the corn (Gladwin, & Trattler, 2011).

D. Explain whether you saw the same or different types of microbes in each substrate.
Some of the fungi looked similar, the one that stood out greatly to me was the strawberry and tomatoes from all the others. The mold on the bread and cheese looked similar at the same time I noticed the differences also. The bread and fruits had a lot of dark mold on it probably zygospores.
E. Describe the type of morphological characteristics you observed in your wet-mount preparations. I observed the hyphae in the wet mounts, as well as the mycelium it looked mass of branching, thread-like hyphae. I could see this very clearly in the images.
F. Describe the type of morphological characteristics you observed in your stained preparations. The stained images showed to be more in flower like clusters. They were small, round, and opaque. The wet images seemed to be more detailed. In the stained images, I couldn’t see the hyphae or mycelium. I could only see the basic structure in the stained fungi images.
G. Discuss whether you were able to see different characteristics in the different preparations. Morphological differences between the two, however, are as follows. Rhizopus consists of a clusters of much branched absorptive hyphae growing downwards in the food medium, groups of hyphae growing upwards from the same node and bearing sporangia, swollen nodes and curved hyphae growing outwards over the surface of the substratum and bearing rhizoids and sporangiophores. The aspergillus looked brown and long (Gladwin, & Trattler, 2011).
H. Explain whether you were able to identify any of the fungal colonies you grew.
I noticed rhizopuz on the stale moist bread and rotten fruits and tomato. Rhizopuz is known as black mold. Rhizopus it looked like tight and compact. On the cheese and even the yogurt (bluish grey color) I think its penicillum or aspergillus because it looked like it had brush-like structures that looked grey and green. It’s hard to tell the difference.
1. Discuss what observations you based your identification on.
My observation was based on knowledge gained from the research and comparing it to my wet mount.
I. Explain how the replication mechanisms of fungi promote the spread of infection within an individual. Fungi rarely cause disease in healthy immunocompetent hosts. Disease results when fungi penetrate host barriers or when immunologic defects or other debilitating conditions exist that favor its entry and growth. Fungi then develops both virulence mechanisms of replication i.e. (e.g., capsule and ability to grow at 37oC) and morphologic forms (e.g., yeasts / hyphae) that facilitate their multiplication within the host. For example, the fungi that colonize skin, hairs, and nails have enzymes that digest keratin. Candida albicans exists in a unicellular yeast like morphology, but when it invades tissues it becomes filamentous; also, the systemic fungi histoplasmas are molds in nature and change to a unicellular morphology when they cause disease and growth promoting disease in the host (Gladwin, & Trattler, 2011).
References
Gladwin, M., & Trattler, B. (2011). Clinical Microbiology made ridiculously simple

Similar Documents

Premium Essay

Gandu

...What is Microbiology? Microbiology is the study of organisms too small to be seen with the naked eye. Originally, emphasis was placed on harmful micro organisms which cause disease or spoilage of beverages and food, but it is now recognized that many microbes have essential roles in our ecosystem or can be used to accomplish beneficial tasks. Human history is full of examples of major devastations caused by bacteria and viruses. Some of these historically important diseases still occur, such tuberculosis and yellow fever. Microorganisms are evolving to cause new infectious disease problems such as Lyme disease and AIDS, which capture public attention. Control and eradication of infectious diseases remain important goals of many microbiologists. The recognition that microorganisms were responsible for what was earlier thought to be "spontaneous generation" opened the door to industrial (pharmaceutical, chemical, energy) and food microbiology, technologies which contribute substantially to today's way of life. Microorganisms in soil and water are essential in the transformation of carbon, nitrogen, oxygen, sulfur and iron to products needed by plants and animals. In various ways, microbes participate in environmental cycling and degradation and global change. In the last few decades, microorganisms have been recognized as ideal model systems for the study of basic biological processes. More recently, microbiologists have brought an exciting dimension to the study of biology...

Words: 8406 - Pages: 34

Premium Essay

Why We Should Be More Cautious When Handling Money

...Courtney Tweed Public Health Microbiology Video project essay Why We Should Be More Cautious When Handling Money When eating at some restaurants, employees handle food and money, without ever washing their hands in between. Some businesses require gloves, but then workers will handle money with those gloved hands. This can cause a high risk of cross-contamination. This can cause sporadic cases of infectious intestinal disease among customers (Michaels). Earliest studies showed 13% of US coins and 42% of paper money had potential pathogens. They identified E. coli, P. aeruginosa, Klebsiella, Proteus, and Staphylococcus species.Studies after that saw that 18% of coins and 7% of currency tested had organisms that could be disease producing. E. coli and salmonella enteritidis were shown to transport pathogens even a few days after contact (Michaels). E. coli could survive up to 11 days on some coins, and contaminate other surfaces. The US government takes soiled and tattered notes out of circulation. The important variable depends on where the money has been, as well as activities performed before handling it. It stands to reason that money will bare the microbial imprint of previous activities. The more recent the activity, the higher the microbial count. Also depending on where the study took place, the levels of intestinal disease could be quite high. Old Nigerian currency was found to be so contaminated it was considered a health risk for treasury workers due to impairment...

Words: 1281 - Pages: 6

Free Essay

Micro Essay

...MicroBiology- MLT1 LabPaq / Published by: Hands-On Labs, Inc. sales@labpaq.com / www.LabPaq.com / Toll Free 866.206.0773 A Laboratory Manual of Small-Scale Experiments for the Independent Study of Microbiology 50-0222-MB-01 LabPaq® is a registered trademark of Hands-On Labs, Inc. (HOL). The LabPaq referenced in this manual is produced by Hands-On Labs, Inc. which holds and reserves all copyrights on the intellectual properties associated with the LabPaq’s unique design, assembly, and learning experiences. The laboratory manual included with a LabPaq is intended for the sole use by that LabPaq’s original purchaser and may not be reused without a LabPaq or by others without the specific written consent of HOL. No portion of any LabPaq manual’s materials may be reproduced, transmitted or distributed to others in any manner, nor may be downloaded to any public or privately shared systems or servers without the express written consent of HOL. No changes may be made in any LabPaq materials without the express written consent of HOL. HOL has invested years of research and development into these materials, reserves all rights related to them, and retains the right to impose substantial penalties for any misuse. Published by: Hands-On Labs, Inc. 3880 S. Windermere St. Englewood, CO 80110 Phone: Denver Area: 303-679-6252 Toll-free, Long-distance: 866-206-0773 www.LabPaq.com E-mail: info@LabPaq.com Printed...

Words: 31695 - Pages: 127

Premium Essay

Health Promotion and Prevention

...NINTH EDITION Burton’s MICROBIOLOGY FOR THE HEALTH SCIENCES Paul G. Engelkirk, PhD, MT(ASCP), SM(AAM) Biomedical Educational Services (Biomed Ed) Belton, Texas Adjunct Faculty, Biology Department Temple College, Temple, TX Janet Duben-Engelkirk, EdD, MT(ASCP) Biomedical Educational Services (Biomed Ed) Belton, Texas Adjunct Faculty, Biotechnology Department Temple College, Temple, TX Acquisitions Editor: David B. Troy Product Manager: John Larkin Managing Editor: Laura S. Horowitz, Hearthside Publishing Services Marketing Manager: Allison Powell Designer: Steve Druding Compositor: Maryland Composition/Absolute Service Inc. Ninth Edition Copyright © 2011 Lippincott Williams & Wilkins, a Wolters Kluwer business © 2007 Lippincott Williams & Wilkins, © 2004 Lippincott Williams & Wilkins, © 2000 Lippincott Williams & Wilkins, © 1996 Lippincott-Raven, © 1992, 1988, 1983, 1979 JB Lippincott Co. 351 West Camden Street Baltimore, MD 21201 Printed in the People’s Republic of China All rights reserved. This book is protected by copyright. No part of this book may be reproduced or transmitted in any form or by any means, including as photocopies or scanned-in or other electronic copies, or utilized by any information storage and retrieval system without written permission from the copyright owner, except for brief quotations embodied in critical articles and reviews. Materials appearing in this book prepared by individuals as part of their official duties as U.S. government employees...

Words: 118758 - Pages: 476

Premium Essay

Microbiology Made Ridiculously Simple

...Preface A well-developed knowledge of clinical microbiology is critical for the practicing physician in any medical field. Bacteria, viruses, and protozoans have no respect for the distinction between ophthalmology, pediatrics, trauma surgery, or geriatric medicine. As a physician you will be faced daily with the concepts of microbial disease and antimicrobial therapy. Microbiology is one of the few courses where much of the "minutia" is regularly used by the practicing physician. This book attempts to facilitate the learning of microbiology by presenting the information in a clear and entertaining manner brimming with memory aids. Our approach has been to: 4) Create a conceptual, organized approach to the organisms studied so the student relies less on memory and more on logical pathophysiology. The text has been updated to include current information on rapidly developing topics, such as HIV and AIDS (vaccine efforts and all the new anti-HIV medications), Ebola virus, Hantavirus, E. coli outbreaks, Mad Cow Disease, and brand-new antimicrobial antibiotics. The mnemonics and cartoons in this book do not intend disrespect for any particular patient population or racial or ethnic group but are solely presented as memory devices to assist in the learning of a complex and important medical subject. We welcome suggestions for future editions. 1) Write in a conversational style for rapid assimilation. 2) Include numerous figures serving as "visual memory tools" and summary charts...

Words: 117402 - Pages: 470

Free Essay

Propecia

...I. 진단혈액 진단혈액 수련항목 (1) : 혈액학적검사 기본 술기 표준수련기간 : 1주 수련내용 : ◆ 용어정의 : • 혈액학적검사 : 혈액세포와 응고에 관련된 일련의 검사를 의미한다. 혈구의 체내분포, 구조, 기능에 관련된 검사, 골수에 분포하는 전구세포에 관한 검사, 혈구에 영향을 끼칠 수 있는 혈장 인자에 관한 검사 및 유전자 이상에 관련된 검사 등을 포괄적으로 포함한다. • 망상적혈구수 : 적혈구 성숙 단계 중 정염색성 적아구(orthochromatophilic normoblast) 바로 다음 단계의 세포로 핵이 빠져나간 직후부터를 의미한다. 미토콘드리아, 중심소체(centriole), 리보솜 등을 함유하고 있으며 말초혈액에서 24-48시간의 성숙과정을 거쳐서 성숙한 적혈구로 된다 (Ref. Williams 16th p373-374) ◆ 숙지할 필수 지식 : • 혈액학 검사에 사용되는 검체와 항응고제의 작용기전 및 종류 • 모세관 혈액의 채취 방법과 용도, 채취 시 주의점 및 정맥혈과의 차이점 • 적혈구침강계수(ESR) 검사의 원리 ◆ 습득할 필수 술기 : • Neubauer chamber의 사용 • 미량법(micromethod)를 이용한 헤마토크리트의 측정 • 수기법을 이용한 망상적혈구수 검사 ◆ 국내외 장비 및 시약 현황 : 해당없음 ◆ 추천되는 참고자료 : • 대한혈액학회. 혈액학, 2006. • 대한진단검사의학회 편, 진단검사의학 제 3판, 2001. • Henry, JB. Clinical Diagnosis and Management by Laboratory Methods, 24th ed. 2006. 보고서 제출 일자 : 200 년 월 일 평가자 : 지도전문의 인 (일자 : 200 년 월 일) 과장 인 (일자 : 200 년 월 일) 수련위원 인 (일자 : 200 년 월 일) 진단혈액 수련항목 (2) : 자동 혈구계산기 표준수련기간 : 2주 수련내용 : ◆ 용어정의 : • 헤마토크릿(Hct) : 혈액 전체 부피에 대한 적혈구 부피의 비율, 단위는 % 또는 L/L • 평균적혈구용적(MCV) : 적혈구의 평균 용적, 단위는 fL, • MCV = Hct (L/L) X 1,000/RBC count (X1012/L) • 평균적혈구혈색소(MCH) : 적혈구 한 개당 혈색소 양, 단위는 pg, • MCH = hemoglobin (g/L)/RBC count (X1012/L) • 평균적혈구혈색소농도(MCHC) : 적혈구 한 개당 평균 혈색소 농도, • 단위는 g/L, MCHC = hemoglobin (g/L)/Hct (L/L) • 적혈구분포지수(RDW)...

Words: 33961 - Pages: 136

Premium Essay

Occupational Hygine

...M.Sc. Program DISTANCE LEARNING ASSIGNMENT Introduction to Occupational Health Q1.( A) Define Health Hazards. Explain the processes that can be hazardous for the health of workers with examples. ANS. Health hazard is the state of events which has the potential to threaten and / or adversely affect health of the exposed employees. Or A danger to health resulting from exposure to environmental pollutants, such as asbestos or ionizing radiation, or to a life-style choice, such as cigarette smoking or chemical abuse. Health hazards may be classified as below 1. Chemical 2. Physical 3. Mechanical 4. Biological 5. Psychosocial Above mentioned hazards as well as all other health hazards are disastrous due to their adverse effects on exposed people like  Bodily injury,  Disease,  Change in the way the body functions, grows, or develops,  Effects on a developing fetus (teratogenic effects, fetotoxic effects),  Effects on children, grandchildren, etc. (inheritable genetic effects)  Decrease in life span,  Change in mental condition resulting from stress, traumatic experiences, exposure to solvents.  Effects on the ability to accommodate additional stress Following are some processes that can be hazardous for the health of workers 1. Abrasive blasting; abrasive blasting operations can create high levels of dust and noise. Abrasive material and the surface being blasted may contain toxic materials (e.g., lead paint, silica) that are hazardous...

Words: 17882 - Pages: 72

Premium Essay

Nanotechnology Applications for Clean Water Solutions for Improving

...NaNotechNology applicatioNs for cleaN Water Micro & NaNo TechNologies series editor: Jeremy ramsden Professor of Nanotechnology Microsystems and Nanotechnology Centre, Department of Materials Cranfield University, United Kingdom the aim of this book series is to disseminate the latest developments in small scale technologies with a particular emphasis on accessible and practical content. these books will appeal to engineers from industry, academia and government sectors. for more information about the book series and new book proposals please contact the publisher, Dr. Nigel hollingworth at nhollingworth@williamandrew.com. http://www.williamandrew.com/MNt NaNotechNology applicatioNs for cleaN Water edited by Nora savage Office of Research and Development, US Environmental Protection Agency and (in alphabetical order) Mamadou Diallo Materials and process simulation center, Division of chemistry and chemical engineering, california institute of technology Jeremiah Duncan Nanoscale Science and Engineering Center, University of Wisconsin-Madison anita street Office of Research and Development, US Environmental Protection Agency and Center of Advanced Materials for the Purification of Water with Systems, University of Illinois at Urbana-Champaign richard sustich N o r w i c h , N Y, U S A copyright © 2009 by William andrew inc. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying...

Words: 90139 - Pages: 361

Premium Essay

Writing Papers

...First edition 2000 Second edition 2001 Third edition 2002 Fourth edition 2007 Published by EnglishforResearch.com The Whole World Company Press, Cambridge, CB7 5EQ, England © Stephen Howe and Kristina Henriksson 2000–2007 Printed by Biddles Limited, King’s Lynn, England The authors hereby assert their moral rights to be identified as the authors of the PhraseBook. You may not remove or alter the authors’ names, publisher’s name, copyright notice, disclaimers or, from the digital version, the End User Licence Agreement. All rights reserved worldwide Copyright is reserved in English and all other languages and countries of the world. PhraseBook for Writing, EnglishforResearch.com, EnglishforStudents.com and EnglishforSchool.com are worldwide trademarks and/or service marks of The Whole World Company Limited. Microsoft and Microsoft Word are trademarks or registered trademarks of Microsoft Corporation. All other trademarks and registered trademarks are the property of their respective owners and are hereby acknowledged. Do not make illegal, unauthorized copies of the PhraseBook. The PhraseBook and digital version are protected by copyright law and international treaties. The publisher and authors have striven to ensure the accuracy and correctness of the PhraseBook; however, they can accept no responsibility for any loss or inconvenience as a consequence of use, information or advice contained in the PhraseBook. PhraseBook versions ISBN 978-1-903384-02-2...

Words: 48522 - Pages: 195