Microbiology Quiz #3 Review Infectious Disease

Format 25 Multiple Choice Questions, worth 1 point each 1 Open Ended, worth 5 points May use the worksheets that went with the TB video

If most microorganisms pose not harm, why do they get such a bad wrap If most microorganisms pose not harm, why do they get such a bad wrap? Give 2 reasons. -2000 are known to cause disease -Among the top 10 causes of death

Be able to define and identify examples of: Symbiosis Mutualism Commensalism Parasitism

How does the place you live in the world impact your chances of contracting an infections disease? The severity of the disease? The chance of dying from the disease? Why? -Low vs. High income countries

Malaria: -Where is it most commonly found. Why. -Can it be prevented Malaria: -Where is it most commonly found? Why? -Can it be prevented? How? -What are the symptoms? -How deadly is it? Why do people die of malaria?

TB: -Why is TB so dangerous. -Can it be prevented. How TB: -Why is TB so dangerous? -Can it be prevented? How? -What are the symptoms? -How deadly is it?

Cancer: -Can microbes cause cancer Cancer: -Can microbes cause cancer? -Does where you live impact your chances of getting cancer from a microbe? Why? -Why was the link between microbes and cancer only recently discovered?

Roundworm: -Nematode -Ascariasis -White / Light Brown -Few inches long -Live in intestine -Found in soil -Found in improperly cooked food -Most common in dogs & cats -Rare in humans

Hookworm: -Contracted by walking barefoot in soil -Worms penetrate skin -Settle in small intestine -Humans contract this easier than a cat or dog -Rare in countries where sanitation is high -Most commonly seen in underdeveloped areas of the world

Fluke: -Flatworm -Undercooked or raw freshwater fish -Settle in the bile ducts coming from the liver where they lay their eggs -Eggs travel to intestine causing infection -Rare in the US

Tapeworm: -Flatworm -Live in intestine -Steal nutrients from host -Common in the US…many cats and dogs become infected and humans sometimes do too -Infected by eating raw or undercooked meat -Can grow up to 50 feet

Nematodes: -Most numerous multicellular animals on Earth -Most are neutral, some are beneficial, but some can make you sick -Roundworm can make you sick

Protozoa: -Single-celled, eukaryotic, heterotrophic -Ubiquitous (found everywhere) -aquatic / moist environments -Cysts can be found everywhere (ex. volcanoes) -Eat bacteria, algae, or other protozoa -Most are neutral, some are beneficial, but some can make you sick (ex. African Sleeping Sickness)

African Sleeping Sickness: -Trypanosoma brucei -Contracted by flies -Sleepiness OR Insomnia -Early symptoms: fever, headache, joint pain, itching -Late symptoms: behavior change, confusion, poor coordination

Mebendazole – common prescription deworming drug Luckily, parasitic infections are all curable!

Any Questions????