A pure culture - Study guides, Class notes & Summaries

Suspected Case - shows symptoms consistent w/ outbreaks Probable Case - symptoms consistent w/ definition Prevalence - number of cases of a disease that is always in an area prevelance rate= total cases/ population Incidence - number of new cases/number of people at risk of the disease Kochs Postulates - 1. The suspected organism should be present in all cases of the disease and absent from healthy animals 2. The suspected organism should be grown in pure culture 3. Cells from ...

In what ways are microorganisms important to humans? correct answers They're important in fermentation reactions, they produce biofuel Studying microorganisms help with vaccination and antibiotic therapy We use microorganisms to purify our water Used in pasteurization so that food is safe to eat What is a bacterial colony and how is one formed? correct answers A colony forms by placing a single microbial cell on a solid nutrient medium where it can grow and divide into millions of cells. ...

A pure culture A) is sterile. B) is a population of identical cells. C) is made of a precisely defined chemical medium. D) contains one microbial cell. correct answers b Microbial cells first evolved on Earth approximately ________ _______ years ago. A) 1.6 to 1.8 million B) 7.0 to 7.2 million C) 3.8 to 3.9 billion D) 10.5 to 11.5 billion E) None of the above correct answers c Predict how Pasteur's conclusions on spontaneous generation with swan flasks would have changed if he w...

Respiratory Therapy - Lindsey Jones/Clinical Simulations 459 Questions with Verified Answers Information Gathering - Emphysema: (Abnormal condition of the alveoli resulting destruction and loss of elasticity) - CORRECT ANSWER LEVEL I : Cyanosis, Barrel chest, increased A-P diameter, Accessory muscle use, Digital clubbing of the nail beds, Significant history of smoking and/or occupational exposure to smoke or other pulmonary irritant LEVEL II : Dyspnea, Wheezing breath sounds LEVEL III ...

A pure culture A) is sterile. B) is a population of identical cells. C) is made of a precisely defined chemical medium. D) contains one microbial cell. Correct Answer B Microbial cells first evolved on Earth approximately ________ _______ years ago. A) 1.6 to 1.8 million B) 7.0 to 7.2 million C) 3.8 to 3.9 billion D) 10.5 to 11.5 billion E) None of the above Correct Answer C Predict how Pasteur's conclusions on spontaneous generation with swan flasks would have changed if he...

Straighterline Microbiology Exam Questions And Answers motility semisolid media shows what? isolating/culturing bacteria solid media is best for? synthetic; defined What are the terms for a media whose exact chemical compositions are known? differential media allows growth of several types of microbes and displays visible differences among those microbes selective media suppress unwanted microbes and encourage desired microbes reducing media a culture medium ...

BIOS 280 Test 2 Questions and Answers 100% Solved What is Koch's third postulate? Correct Ans-Cells from a pure culture of the suspected organism should cause disease in a healthy animal

What are the requirements of a fastidious microbe? A fastidious microbe is an organism with complex growth requirements and will not grow without then. Enriched medias thus contain these specific and essential nutrients required for the growth of a particular subset of microorganisms. What is the name of the process of spreading a bacterial culture onto a petri dish? Plating. Plating microbes can be done using a sterile loop, a sterile swab, or a sterilized wire loop. Each device is simpl...

In the nitrogen cycle, which of the following steps involves removal of nitrogen from the atmosphere by bacteria? Nitrogen Fixation If enough H+ ions are added to pure water to raise the H+ concentration of the solution to ten times higher than the original concentration, what is the resulting OH- concentration of the solution? 10-8 M Fungi are able to reproduce asexually by creating conidiospores and sporangiospores. Which of the following is an accurate explanation for why it is advantag...

Culture CORRECT ANSWER A nutrient medium growing one or more species of microorganisms Pure culture (anexic) CORRECT ANSWER When a culture contains only one species of microorganism -Simplifies experimental design and interpretation of results -Must be made up of individual cells of a single genetic makeup (genotype) -A colony is usually derived from a single cell and thus can be used to inoculate medium and generate this Wire (platinum) inoculating loop CORRECT ANSWER Used to transfer ...