disease caused bacteria viruses

8/7/2019 Disease Caused Bacteria Viruses

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Bacterial Disease in HumansBacterial Disease in Humans

What areWhat are

pathogens?pathogens?

They are diseaseThey are disease--causing agents.causing agents.


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What are the two general ways thatWhat are the two general ways that

bacteria cause disease?bacteria cause disease?

Some damage the tissues of the infectedSome damage the tissues of the infected

organism directly by breaking them downorganism directly by breaking them down

forfood.forfood.

Others release toxins that harm the body.Others release toxins that harm the body.


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What kind of tissue do theWhat kind of tissue do the

bacteria that cause tuberculosisbacteria that cause tuberculosisbreak down?break down?

They break down lung tissue.They break down lung tissue.


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What are antibiotics?What are antibiotics?

They are compounds that blockThey are compounds that blockthe growthand reproduction ofthe growthand reproduction of

bacteria.bacteria.


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What is one of the majorreasons fortheWhat is one of the majorreasons forthe

dramatic increase in life expectancydramatic increase in life expectancy

during the past two centuries?during the past two centuries?

There is an increased understanding ofThere is an increased understanding of

how to prevent and cure bacterialhow to prevent and cure bacterialinfections.infections.


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Controlling BacteriaControlling Bacteria

What is sterilization?What is sterilization?

It is a way of destroying allIt is a way of destroying all

bacteria by subjecting them tobacteria by subjecting them to

great heat.great heat.


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A chemical solution that kills pathogenicA chemical solution that kills pathogenic

bacteria is called a(an) _____.bacteria is called a(an) _____.

disinfectantdisinfectant


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Why will food stored at lowWhy will food stored at low

temperatures keep longer?temperatures keep longer?

The bacteria in the food will takeThe bacteria in the food will take

muchlonger to multiplymuchlonger to multiply..


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How can food be preserved throughHow can food be preserved through

canning?canning?

This method involves heating food to aThis method involves heating food to a

high temperature and then immediatelyhigh temperature and then immediatelyplacing it into sterile glass jars ormetalplacing it into sterile glass jars ormetalcans and sealing the container.cans and sealing the container.


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What everyday chemicals can be used toWhat everyday chemicals can be used to

inhibit the growth of bacteria in food?inhibit the growth of bacteria in food?

They include salt, vinegar, and sugar.They include salt, vinegar, and sugar.


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Viral Disease in HumansViral Disease in Humans

What are some human diseases thatWhat are some human diseases that

viruses cause?viruses cause?

Viruses cause polio, measles, aids,Viruses cause polio, measles, aids,

mumps, influenza, yellow fever,mumps, influenza, yellow fever,

smallpox, the common cold, and manysmallpox, the common cold, and many

otherdiseases.otherdiseases.


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Bacteria and VirusesBacteria and Viruses

Viral Disease in AnimalsViral Disease in Animals

CancerCancer--causing viruses are known as_____.causing viruses are known as_____.

oncogenic virusesoncogenic viruses


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Bacteria and VirusesBacteria and Viruses

Viroids and PrionsViroids and Prions

A diseaseA disease--causing particle that contains onlycausing particle that contains onlyprotein and not DNA orRNA is calledprotein and not DNA orRNA is calleda(an)_____.a(an)_____.

prionprion


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WordWiseWordWise

What is the viral DNA that is embeddedWhat is the viral DNA that is embedded

in ahosts DNA?in ahosts DNA?

prophageprophage


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BACTERIA AND VIRUSESBACTERIA AND VIRUSES

What is arodWhat is arod--shaped bacterium?shaped bacterium?

bbacillusacillus


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What is a compound that blocks theWhat is a compound that blocks the

growthand reproduction of bacteria?growthand reproduction of bacteria?

antibioticantibiotic


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What is a virus that infects bacteria?What is a virus that infects bacteria?

bacteriophagebacteriophage


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What is a prokaryote that can captureWhat is a prokaryote that can capture

sunlight forenergy but also needssunlight forenergy but also needs

organic compounds fornutrition?organic compounds fornutrition?

photoheterotrophphotoheterotroph


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What is the exchange of geneticWhat is the exchange of genetic

information that occurs from oneinformation that occurs from one

bacterium to anotherthroughahollowbacterium to anotherthroughahollowbridge?bridge?

conjugationconjugation


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What is a virus that contains RNA as itsWhat is a virus that contains RNA as its

genetic information?genetic information?

rretrovirusetrovirus


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What is the process in which nitrogen isWhat is the process in which nitrogen is

converted into a form plants can use?converted into a form plants can use?

nitrogen fixationnitrogen fixation


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Hidden Word:Hidden Word:pathogenpathogen

Definition:Definition: A diseaseA disease--causing agentcausing agent

disease caused bacteria viruses

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