Examples Facts Pattern recognition alerted by Viruses flu‚ small pox‚ HIV‚ polio‚ Ebola‚ rhinovirus‚ hepatitis‚ measles Can only reproduce inside cells Foreign nucleic acids (double stranded RNA‚ single stranded DNA‚ foreign methylation patterns)‚ reduced antigen presentation by infected cells So viruses are usually recognized by something unusual in their nucleic acids.(Double RNA‚ normally‚ RNA is a single strain) Bacteria Strep‚ staph‚ TB‚ anthrax‚ leprosy‚ bubonic
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marine viruses is not true: Select one: a. Are involved in the release of DOM (dissolved organic matter) into the water b. Bridge the gap between the non-living and the living c. Their genetic material is in the form of DNA or RNA d. Cause diseases in many types of organisms e. Consist of minute cells sometimes attached into chains Question 2 E. Incorrect Mark 0 out of 1 Flag question Question text Bacteriophages are: Select one: a. Archea b. Bacteria c.
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KELLY STREET Unit 4222-265 Causes and Spread of Infection Outcome 1 1.1 Bacteria are single cell organisms that cause infections‚ there are both good bacteria for example which lives in the gut ‚ helping break down nutrients for the bodies needs as well as bad bacteria which can cause infections. They can produce toxins which are poisonous‚ and in optimum circumstances can multiply every 10-20 minutes via binary fission‚ so potentially millions can be produced within a short space of time if
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enlargement in foci size‚ however there was a reduction in focus numbers. Overall‚ Sambucus nigra liquid extract 3.2% inhibited the growth of influenza A and B viruses and bacteria that infect the upper respiratory tract. The researchers concluded that the Rubini elderberry extract is effective against both bacteria and Influenza types A and B viruses. For our experiment‚ we will work with Sambucus nigra and T cells. It will be interesting to see the effect of Sambucus nigra on T cells because Sambucus
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leading cause of an infection. The microbes are to stop with the growth and more reproduction of the organisms such like bacteria‚ fungus‚ viruses‚ and parasites. 2. Do all bacteria respond the same to a given antimicrobial? Explain your answer a. They don’t‚ they have an antibiotic resistant. Antibiotics are there to kill and stop the growth of bacteria cells. The bacteria respond differently to the microbe. It can change its morphology‚ molecular components‚ gene expression‚
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The Search for better health – notes on all parts except first hand pracs • Discuss difficulties in defining the terms health and disease. Health is defined as the complete physical‚ physiological‚ mental and social wellbeing of an organism. It is not merely the absence of disease. Disease can be defined as a state which prevents correct functioning or impairs bodily function. It is difficult to define these terms as they are very subjective and dynamic‚ i.e. they differ from person
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Cross contamination is a process by which bacteria or other microorganisms are unintentionally transferred from one substance or object to another‚ with harmful effect. What that means for example‚ if you get sick from eating at a restaurant that might mean that the food handlers are not following correct food safety guidelines. Some examples are the some of the food handlers wash their hands or people forget to not touch there face and hair. But it gets worse there are also some people that forget
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differences between: bacteria‚ viruses‚ fungi and parasites. * Bacteria are unicellular‚ prokaryotic microorganism found almost in all kinds of habits. Some bacteria are beneficial like those involved in nitrogen fixation and some pathogenic‚ which cause diseases. * Viruses are unicellular‚ tiny organisms which is mostly composed of DNA (DeoxyriboNucleic Acid) and protein. Its body compromises of head and tail sections. Viruses attach themselves
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The movement of water down its osmotic gradient across a selectively permeable membrane is known as osmosis. The difference in the concentrations of solutes on either side of the membrane results in the establishment of an osmotic pressure. Water follows the direction of solutes‚ this means that in the event where there are more solutes outside the cell than there are inside the cell‚ water will move from the inside of the cell to the outside in order to establish water balance. When a cell is placed
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microorganisms that react with and inhibit the growth of other microorganisms. An antibiotic should be selectively toxic to pathogenic microorganisms‚ should not incite an allergic response in the body‚ should not upset the normal microbial population of various body sites‚ and should not foster the development of drug resistance. Penicillin. Penicillin prevents Gram-positive bacteria from forming peptidoglycan‚ the major component of the cell wall. Without peptidoglycan‚ internal pressures cause the
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