concentration of ___________ in their cell walls A. Lipids 7. Which of the following best describes current understanding of the fluid mosaic model of membrane structure? A. Phospholipid bilayer with peripheral and integral membrane proteins 8. Gram positive cells A. Have multiple layers of peptidoglycan that are porous; the crystal violet stain is trapped when the peptidoglycan is dehydrated 9. Which of the following is NOT true of the nucleoid of prokaryotes? A. It contains histone proteins
Premium Bacteria Archaea DNA
cellular component to be stained. There are 2 types of stain: Acidic stains – a chromogen portion exhibits a negative charge‚ therefore has a strong affinity for the positive constituents of the cell Basic stains – a chromogen portion exhibits a positive charge‚ therefore has a strong affinity for the negative constituents of the cell Bacterial cells usually have a negative surface charge‚ meaning that a positively charged stain is needed to stain the surface of the cell. When the
Premium Bacteria Electric charge
FOOD AND INDUSTRIAL MICROBIOLOGY Food spoilage‚ food infections and intoxications caused by microorganisms and methods for their detection Dr. Neeraj Dilbaghi Reader‚ Department of Bio & Nano Technology Guru Jambheshwar University of Science and Technology Hisar- 125001 and Dr (Mrs.) S. Sharma Professor‚ Department of Microbiology‚ CCS Haryana Agricultural University‚ Hisar- 125001 (Revised 25-Sep-2007) CONTENTS Introduction Food Spoilage and General Principles Underlying Spoilage of Food Intrinsic
Premium Bacteria Microbiology Milk
Shakira Jarvis Microbiology Lab Assignment Laboratory Assignment Outline 1. Check in & The Microscope a. Review of proper lab etiquette. i. Review laboratory syllabus and b. Review of the Parts of a Microscope ii. Review of lab exercises about different types of Microscopes 2. Survey of Microorganisms c. Viewing‚ drawing‚ and describing several types of fungi‚ algae‚ and Bacteria iii. Chlamydomonas iv. Spirogyra
Premium Bacteria Microbiology Agar plate
Lab 4: Cell Structures and the Gram Stain Purpose: The purpose of this lab is to familiarize the student with the use of a compound microscope and the Gram Stain test. Students will review a brief video and slides to introduce the compound microscope. Students will also view a video about the Gram Stain procedure and then answer questions related to it. Hypothesis If I look at the slides I will see where the cell wall is and what lies inside it and in the Gram Stain if I watch the video I will
Premium Gram staining Bacteria Cell
Bacteria Classification By Gram Staining THE AMERICAN UNIVERSITY IN CAIRO BIOLOGY DEPARTMENT SCIENCE 453 : BIOLOGY FOR ENGINEERS REPORT No.1 Presented By : Karim A. Zaklama 92-1509 Sci. 453-01 24/2/96 Objective: To test a sample of laboratory prepared bacteria and categorise it according to Christian’s gram positive and gram negative classes and also by viewing it under a high powered microscope and oil immersions; classify its shape and note any special characteristics. Introduction: Bacteria
Premium Staining Gram staining Bacteria
Foster Professor Ray Ramirez BIOL 2420 December 5‚ 2014 Tuberculosis: Leading Disease Killer in the World Microbes orbit the world that is around us involving being in the air and on surfaces we may come in close contact with. In the medical terms‚ microbiology involves the study of microscopic organisms‚ bacteria‚ archaea‚ fungi‚ protozoa‚ algae‚ and multi cellular animal parasites (Baumann 3-5). It is important that we acquire knowledge of these subjects because there are many infectious diseases that
Premium Tuberculosis
Microbiology‚ Test 3 Study Guide Chapters 14‚ 15‚ 16 and 17 Chapter 14 This chapter is about the principles of disease and epidemiology. Epidemiology – the science that studies when and where diseases occur and how they are transmitted. CDC‚ Atlanta‚ tracks and traces diseases. ONE World (the idea that it’s all in one place‚ it could happen anywhere; locally‚ states‚ large counties track the incidences and occurrences of disease)
Premium Immune system
I. INTRODUCTION Independent Study Questions 1.) What is the fundamental difference between eukaryotic and prokaryotic cells? Procaryotic cells do not contain a membrane-bound nucleus or any membrane-bound organelles. Eurkaryotic cells contain both a membrane mound nucleus and membrane-bound organelles (making them far more complex). 2.) List and describe the two domains of prokaryotic organisms. a. Bacteria- Most are a specific shape (cylindrical‚ spiral‚ or spherical). Cell
Premium Bacteria
A Basic Understanding of Microscopy Assignment 1 Kaplan University-Microbiology Since microorganisms are not visible to the eye‚ the essential tool in microbiology is the microscope. One of the first to use a microscope to observe microorganisms was Robert Hooke‚ the English biologist who observed algae and fungi in the 1660s. In the 1670s‚ “Anton van Leeuwenhoek‚ a Dutch merchant‚ constructed a number of simple microscopes and observed details of numerous forms of protozoa‚ fungi‚ and bacteria”
Premium Microscope Bacteria Electron