Intelligently

BIOS 242 Week 6 Assignment; Pathogens

Lab 11: Bacteria of the Skin Learning Objectives: • Identify the growth of skin bacteria on different types of selective and differential media. • Identify pathogenic from non-pathogenic bacteria Introduction: Our skin forms the first line of defense. It has several characteristics that makes it an inhospitable environment for the growth of most microbes. Some of these characteristics of skin include: high percentage of salt, low pH from 4-5.5, sebum, antimicrobial chemicals; an outer...

Week 6 Concepts: Epidemiology of Infectious Diseases Skin, Nervous System, and Circulatory System Pathogens Prepare: Skin and Nervous System Pathogens • Which of the following is not a prion disease? • Most cases of sepsis are caused by . • Protective features of the skin include all of the following except . • Which of the following is a febrile disease characterized by a rash and is caused by a virus that can cross the placenta to cause serious fetal damage? • The transmissi...

Lab 10: How Germs Spread Learning objectives: • To learn how germs spread • To better understand the spread of germs, by healthcare professionals, from patient to patient • To better understand the importance of good handwashing. Germs spread in many different ways. Direct contact, indirect contact, aerosol transmission, sexually transmitted or through a vector. In this lab, we will observe how germs spread. Materials: Glow in the dark gel, Black light Method: 1. Wear pers...

Initial Post Instructions Some microorganisms like Staphylococcus, Streptococcus, Yesinia pestis, E. coli can cause diseases of different body systems. Let's investigate how the same pathogen is responsible for different pathophysiological symptoms. First, choose a microorganism found in multiple systems. Then, describe your pathogen's role in disease for one body system: report the disease caused, the normal function of that system, pathophysiological symptoms, and the virulence factor(s) th...

Lab 10: How Germs Spread Learning objectives: • Identify how germs spread • Explain the spread of germs • Identify the importance of good handwashing. Germs spread in many different ways. Direct contact, indirect contact, aerosol transmission, sexually transmitted or through a vector. In this lab, we will observe how germs spread. Materials: Glow in the dark gel, Black light Method: 1. Wear personal protective equipment including lab coat, safety glasses and gloves. 2. Inst...

Week 5 Concepts: The Immune System Epidemiology Prepare: Epidemiology • The principal government agency responsible for tracking infectious diseases in the United States is the • The study of the frequency and distribution of a disease in a defined population is . • The Centers for Disease Control and Prevention assigns the most virulent microbes known to cause human disease to biosafety level 4. Self-Check: Epidemiology Drag the label to the following diagram according to the typ...

Here is some information about Exam 2. • This examination covers content learned in weeks 3 and 4. • This exam is worth 120 total points, and includes the following types of questions: o 25 Multiple choice questions o 5 Multiple answer and matching questions o 10 Fill in the blank question o 2 Essay questions • You have 90 minutes to complete the Exam. • When the time limit is reached, you will automatically be exited from the exam. • Remember to choose the best answer, some q...

Prepare: Factors Affecting Microbial Growth • The phase of the bacterial growth curve in which the rate of multiplication equals the rate of cell death is the . death phase • An organism that grows in lower pH conditions is called a . • An organism that uses organic carbon for its carbon needs and sunlight for its energy needs would be called a . Self-Check: Growth Requirements in Microorganisms • Place the images in order from top to bottom to show extracellular digestion in ...

1. The organisms that can use inorganic carbon and the energy of chemical reactions ______ . 2. A ______ requires organic molecules for carbon and energy from sunlight. 3. During ______ transport water transfers through semi permeable following concentration gradient. 4. Microorganisms living in soil and water associated with volcanic activity, compost piles, habitats directly exposed to the sun are ______. 5. In ______ transport nutrients are transported against the diffusion gradient or i...

Lab 4: Simple Staining Learning Objectives: • To learn about principle of staining • To learn the process of simple stain • To prepare wet mount slides Exercise 1: Simple Stain Materials: Overnight cultures of S. epidermidis, B. subtilis, S. cerevisiae (yeast) , inoculating loop, glass slides, incinerators, crystal violet or any other stain chosen by instructor; tongs, staining racks/trays, immersion oil, lens paper, bibulous paper, microscope Method: 1. Obtain a clean glass slid...

Lab 3: Microscopy- Observation of Cells Learning Objectives: • Use the compound light microscope for observation of cells. • Identify different types of bacteria based on their shapes. • Identify a variety of eukaryotic cells. Introduction: Exercise 2: Observation of Different Types of Bacteria Materials: Compound microscope, immersion oil, lens wipes, prepared slides of various bacteria- Rods, cocci and spiral Method: 1. Obtain the preserved slide of a bacteria. 2. Use Appen...

Choose ONE cellular component that is only found in eukaryotes. Discuss what its role is.

Week 2 Concepts: Classification and Nutrition Prokaryotic vs Eukaryotic Cells Prepare: Prokaryotic vs Eukaryotic Cells • The cellular structures found in prokaryotes are (select all that apply) • The Gram stain works because of differences in the of bacteria. Prokaryotes include • Which of the following structures contribute to pathogenicity of bacteria (select all that apply) Self-Check: Bacteria and Archaea • Drag the cell types to the three respective highlighted images at the...

1. Draw an image of a Prokaryotic cell in the space below. Label all the organelles and structures present in a typical prokaryotic cell. 2. Complete the following table by listing various organelles and structures commonly found in a Prokaryotic cell and describe their functions in 1-2 sentences. 3. Draw an image of a Eukaryotic cell in the space below. Label all the organelles and structures present in a typical Eukaryotic cell. 4. Complete the following table by listing various organelles ...

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: In this laboratory exercise, colonies from mixtures of Escherichia coli and Serratia marcescens will be isolated using the four-way streak method as summarized below (Figure 1). We will need this image from Materials: A 24 hour nutrient broth mixture of Serratia marsecens ...

Prepare: History of Microbiology • Does not have membrane bound cellular organelles and has cell wall made up of peptidoglycan: • According to Binomial system the scientific name of any living organism has (select all that apply): • He was the first person to use swan neck flask to disapprove the theory of spontaneous generation: • Father of Microbiology who called microbes animalcules: • Which field of microbiology monitors and controls the spread of diseases in communities? S...

Option (I): Describe a clinical or research scenario that requires the use of a microscope. What microscope is the best choice for your scenario and why? What would be your second choice? Option (II): As a medical professional, it is important to have prior knowledge in Microbiology. Many of your patients will seek medical attention due to illness caused by bacterial infection. Medical News Today released an article that explains how gastric biopsies are used to diagnose a wide range of com...

Lab 1: Culture Transfer Techniques Learning Objectives: • Identify the importance of aseptic technique in the field of microbiology • Apply the concept of aseptic technique and its importance in the field of microbiology. • Identify different forms of basic growth media • Transfer a pure bacterial culture from one growth media to another, a process called sub- culturing. Introduction: Materials: Nutrient broth, Nutrient agar slants, Nutrient agar stabs, liquid and slant culture...

Describe a clinical or research scenario that requires the use of a microscope. What microscope is the best choice for your scenario and why? What would be your second choice? Make sure to post at least two high quality posts. Your instructor will open new topics of discussion throughout the week