The culture used in this experiment was Micrococcus. If there were any other org

Question

The culture used in this experiment was Micrococcus. If there were any other organisms growing on the plates, state at least four the characteristics you would use to determine if they were different. Swabbing a plate with a sample containing microorganisms taken from an infected person does not always produce microbial growth. Give one possible reason why no growth may occur. Do all people that contact an infected person acquire the disease? Give TWO reasons for you answer. How can an epidemic stop without chemotherapy and vaccine?

Explanation / Answer

3.Ans-No, all people that contact an infected person does not acquire disease but yes some of them can acquire-

Every disease has different modes of transmission .A disease causing pathogen must contact a suspictible host in order for it to infect the host. Once infecton has been establshed,the host now harbours the pathogen in large amounts an can transmit pathogen to the uninfected healthy individual.

Viruses are too small to be seen by the naked eye. They can't multiply on their own, so they have to invade a 'host' cell and take over its machinery in order to be able to make more virus particles.

Viruses consist of genetic materials (DNA or RNA) surrounded by a protective coat of protein. They are capable of latching onto cells and getting inside them.

The cells of the mucous membranes, such as those lining the respiratory passages that we breathe through, are particularly open to virus attacks because they are not covered by protective skin.

Bacteria are organisms made up of just one cell. They are capable of multiplying by themselves, as they have the power to divide. Their shapes vary, and doctors use these characteristics to separate them into groups.

Bacteria exist everywhere, inside and on our bodies. Most of them are completely harmless and some of them are very useful.

But some bacteria can cause diseases, either because they end up in the wrong place in the body or simply because they are 'designed' to invade us. Certain bacteria are able to survive outside of a host and remain infective for extended periods of time. Indirect infection occurs when an individual comes in contact with such an organism. These organisms may be found anywhere, but when they exist on toys, furniture, door knobs or other personal care products used by people, transmission is more likely to occur. Consumption of contaminated food is another common mode of indirect transmission of bacterial infections

Viral and bacterial infections are both spread in basically the same ways.

·      A person with a cold can spread the infection by coughing and/or sneezing.

·      Bacteria or viruses can be passed on by touching or shaking hands with another person.

·      Touching food with dirty hands will also allow viruses or bacteria from the intestine to spread.

4.AnsAn epidemic is the condition in which there is an increase in the number of people affected with a disease and this increase is higher than normally expected at a given place and time. An epidemic spreads rapidallyin a given population within a short amount of time. The transmission of an epidemic can be by an airborn route, biologically,by arthoprods, direct contact, horizontally among other routes.

Ebola virus disease or Ebola haemorrhagic fever, is transmitted to people from wild animals and spreads in the human population through human-to-human transmission . Ebola is introduced into the human population through close contact with the blood, secretions, organs or other bodily fluids of infected animals such as chimpanzees, gorillas, fruit bats, monkeys, forest antelope and porcupines found ill or dead or in the rainforest.

These are some prevention method from which we can stop the epidemic disease Ebola without chemo therapy and vaccines-

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