Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Biology Expert

Microbiology was a study of living organisms that scientists had some trouble proving to the general public that they even existed. One of the reasons for this was that people could not see the organism. That is, not until the microscope was invented. Antony van Leeuwenhoek (1674 to 1724) was one of the pioneers in the making of microscopes, His observations are among the first recorded of bacteria, yeasts and protozoa.
Another pioneering microbiologist was Robert Koch (1890) who is known for postulates that help establish the agent for a particular disease. Koch's Postulates:
1. The organism should be associated with the lesions of the disease in all cases and absent from healthy individuals.
2. The organism must be isolated and grown in pure culture outside the diseased host.
3. When this culture is inoculated into a healthy host this host must develop the symptoms of the disease.
4. The organism must be re-isolated from the experimentally infected host grown again in a culture and infect once again a healthy host.

These postulates can be used for human, animals and plants for establishing the disease agent. They are still used today even though some complications and modifications must be used for certain obligate parasitic organisms (must live within a host).

The development and use of the vaccination against smallpox was aided by the work of another early microbiologist Edward Jenner. Edward Jenner was a country doctor working in England around 1798. He observed those individuals who were exposed to cowpox, a related virus that infect cattle, and these individuals did not contract the smallpox virus. He was the first to use an artificial exposure to the cowpox virus to stimulate the human immune response. Edward Jenner's early work put to use one of the first vaccinations for smallpox.

In this discussion share your opinion as to which of these early microbiologists' contribution was the most important and describe your reasoning. Remember to comment on a classmate's response as well. Please contribute before the second Friday of the module.

Biology, Academics

  • Category:- Biology
  • Reference No.:- M925808

Have any Question? 


Related Questions in Biology

1 identify five different mammalian species2 describe what

1. Identify five different mammalian species. 2. Describe what tissues regenerate. 3. Discuss if you believe that each of these mammals use the same or a different mechanism to regenerate tissues?

Create a patient scenario but dont give away the

Create a patient scenario but don't give away the disease.  First explain the terms opportunistic and true pathogen. Also differentiate between syndrome, signs and symptoms of disease so everyone will have an idea of wha ...

Identify the waveforms in a normal electrocardiogram ecg

Identify the waveforms in a normal electrocardiogram (ECG), and relatethe ECG waveforms to atrial and ventricular depolarization andrepolarization and to the activity of the conduction system.

The ability of a person to roll their tongue is controlled

The ability of a person to roll their tongue is controlled by a single gene with two alleles. About 65% of people have the dominant allele, and can therefore roll their tongue. Stephanie cannot roll her tongue. Without y ...

What are the steps in the process of creating a safe

What are the steps in the process of creating a safe schools/health student initiative?

Why is it not possible for hiv medications to eliminate hiv

Why is it not possible for HIV medications to eliminate HIV in a confirmed HIV-positive patient?

Blame for commercial overexploitation can be placed on the

Blame for commercial overexploitation can be placed on the people who directly do the exploiting and those that buy the product - but which group deserves more of the the blame? Why? What is an example of a commercial re ...

1 mediterranean climates like those in central california

1. Mediterranean Climates, like those in Central California, experience extremely hot and dry summers and relatively cool and moist winters. Relate the soil-water balance to the growth strategies of plants in this region ...

Bioethics assignment instructionstopic 2 use of gmo

Bioethics assignment instructions: Topic 2: Use of GMO mosquitoes to eradicate zika virus carrying mosquitoes Now you need to research the topic and write a 500-1000 word (1 to 2 pages) writeup about the topic. Please us ...

What is the basic building block of a sanitary landfill how

What is the basic building block of a sanitary landfill? How is it constructed? Make a sketch to illustrate your answer. What kind of equipment or machinery is used to construct and operate a landfill?

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro