Developed over 100 years ago, Koch's postulates is no longer used to determine etiologic agents of human infectious diseases. True False

Answers

Answer 1
Answer:

Answer:

True

Explanation:

Koch's postulates was proposed to show a causative relationship between a microbe and a disease.

Koch's postulates

•The microorganism must be present in large quantity in all organisms affected by the disease, but should not be seen in healthy organisms.

Koch abandoned this due to his discovery of asymptomatic carriers of cholera and of typhoid fever. Asymptomatic or subclinical infection carriers are seen in diseases, especially viral diseases.

•The microorganism must be seperated from a diseased organism and nutured in pure culture.

This can suspended for specific microorganisms or entities which(at the current time) can't be nutured in pure culture. Viruses uses host cells to grow and replicates and not in pure culture.

•The cultured microorganism should lead to disease when it infects a healthy organism.

It says "should", not "must".

NOTE: NOT ALL organisms introduced to an infectious agent will be infected which may be due to certain factors like general health and good immune functioning; vaccination; or genetic immunity. Its best explained using the resistance to malaria as a result of presence of at least one sickle cell allele.

•The microorganism must be reisolated from the inoculated, diseased experimental host and observed as being identical to the basic specific causative agent.

A single pathogen may lead to several disease conditions. A singualr disease infection may be due to several different microorganisms. While some pathogens cannot be cultured in a pure culture in the lab, others can infects humans.


Related Questions

Which stage of the listening process might include an alert posture, appropriate facial expressions, and direct eye contact?selectingrespondingunderstandingrememberingevaluating?
The Sun unevenly heats the minerals in a rock, causing the rock to break. This is an example of _____. a) chemical weathering B) biological weathering C) physical weathering D) erosion
Why does incomplete dominance not support the blending theory of inheritance?
With the following symptoms—redness and edema at the IV site, pain along the course of the vein, and if severe, fever, malaise, and tachycardia—what complication is likely occurring?
For the first time in five years California authorities have issued a first stage smog alert, warning people in some areas of unhealthy levels of ozone in the air. Smog contains several dangerous chemical compounds beside ozone: sulfur dioxide, nitrogen dioxide, and carbon monoxide. Since it would be impossible to wear gas masks like those in the picture, a reasonable plan would be to

Which statement about DDT best shows how science has been impacted by society? A.DDT led to insect resistance.
B.DDT was considered harmful and was replaced by other pesticides.
C.DDT was the first modern insecticide.
D.DDT was used in WWII to control malaria and typhus.

Answers

The correct answer is B. DDT was considered harmful and was replaced by other pesticides

D is wrong!! and i need the answer 

Which of the following senses is most closely related to balance? A. Taste
B. Touch
C. Smell
D. Hearing

Answers

The sense which is most closely related to balance among these would most likely be hearing - d. With the help of hearing we are able to distinguish how far away we are from a certian location to another location just based on the sound that our feet are making which is essential in keeping and maintaining balance. 

To dust or not to dust? Residents are up in arms about the crop dusters that fly over the area from May through October, spraying insecticides and fungicides over cotton, peanuts, corn, and soybeans. Non-farming residents insist that the spray is causing an increase in respiratory problems among residents as well as a spike in the incidence of lung cancer. They want the crop dusting to stop! Farmers have hired a research group to investigate the claims of local residents. What comment would you make about the farmers attempt to satisfy local residents? A) The farmers idea is a good one since the researchers do not live in the area.
B) Let the residents also hire a group to conduct the research and analyze the data.
C) The agricultural chemical industry would be better suited to conduct the research.
D) The research group hired by the farmers may present a biased picture of the situation.

Answers

Answer:

The correct answer is option D) "The research group hired by the farmers may present a biased picture of the situation".

Explanation:

One of the basic premises of a reliable scientific investigation is that the researches should not have any conflict of interest. A research group hired by farmers to investigate the claims of local residents regarding the use of insecticides and fungicides most likely would not act unbiased. The proper way to perform the research is to hire an independent research group that would not have any conflict of interest in the matter of study.

Answer:

The correct answer is D)

Explanation:

Here's why:

The research group hired by the farmers may present a biased picture of the situation. An outside agency, one that is not paid by either the residents or the farmers, would be the best group to conduct research and analyze the results in order to find an unbiased solution to the problem. There should be no local involvement in data collection or analysis since any local residents, farmers, or politicians, have their own agenda.

Which statement best describes a major point of Darwin's theory of Natural Selection?All things are not related
B
The best adapted organisms are most likely to survive
C Organisms become less complex over time
D
Change in organisms occurs suddenly
ASAPPPO

Answers

The best adapted organisms are most likely to survive

Answer B

Explanation:

Why are frogs said to have 2 lives

Answers

Amphibian means two-lives, Frogs began there lives in the water as eggs and then grow to tadpoles, when they are fully developed they live on land.
they start their life in water as a tadpole then they adapt to land and go through metamorphosis to become a frog

The function of the chloroplast is to _____.a. convert light energy to chemical energy b. convert one kind of chemical energy to another digest sugar to provide ATP energy for the cell move the cell

Answers

Answer:

convert light energy into chemical energy

Explanation:

According to my research on studies conducted by various biologists, I can say that based on the information provided within the question they convert light energy into chemical energy. Chloroplasts are organelles that conduct photosynthesis, which is the process of convert light energy from the sun to the chemical energy of a glucose molecule

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

The function of the chloroplast is to convert light energy to chemical energy.

The function of the chloroplast is to convert light energy to chemical energy. Chloroplasts are organelles found in plant cells that contain a pigment called chlorophyll. During photosynthesis, chlorophyll absorbs light energy and uses it to convert carbon dioxide and water into glucose and oxygen.

Learn more about chloroplast function here:

brainly.com/question/35861716

#SPJ6