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Midterm #2 > Eukaryotes > Flashcards

Eukaryotes Flashcards

1
Q

What is a parasite

A

An organism that is on or in a host causing damage to the host

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2
Q

Pathogen vs parasite

A

Parasites are bigger protozoa while pathogens are smaller

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3
Q

Define pathogens

A

Bacteria, viruses, fungi

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4
Q

Define parasites

A

Protozoa, anthropods, helminths

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5
Q

Describe some characteristics of fungi

A

Unicellular ,microscopic (yeasts) and multicellular forms(molds)
Most free living, terrestrial
Important as decomposers and economically

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6
Q

What are some fungi diseases in humans

A

Superficial mycoses and systematic mycoses

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7
Q

What is the example for systematic mycoses and the disease it leads to

A

Coccidioides immitis

Coccidioidomycosis (Valley fever)

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8
Q

What is the example for superficial mycoses and the disease it leads to

A

Candida albicans

Candidiasis (yeast infection, thrush, diaper rash)

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9
Q

Describe the characteristics of protozoa

A

Microscopic, unicellular organisms
Most free living, aquatic
Important in food chains and as decomposers
Asexual(fission) and sexual reproduction
Many form cysts for dispersal, survival
Parasites often use fecal oral transmission

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10
Q

What are some protozoa diseases in humans

A

Flagellates, amoebas, apicomplexans(sporozoans)

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11
Q

What is the example of flagellates in the disease it leads to

A

Giardia lamblia

Giardiasis

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12
Q

What is the example for amoebas in the disease it leads to

A

Entamoeba histolytica

Amebiasis/ Amebic dysentery

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13
Q

What is the example of apicomplexans and the disease in leads to

A

Plasmodium falciparum

Cerebral malaria/severe malaria

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14
Q

Describe the characteristics of anthropods

A

Insects vs. arachnids
Ectoparasites
Most important as vectors of diseases

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15
Q

What are the diseases of anthropods in humans

A

Ectoparasites and vectors

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16
Q

What is the example for ectoparasites and the disease it causes

A

Sarcoptes scabiei var. hominis

Scabies

17
Q

What are the characteristics of helminths

A

Parasitic worms: nutrients from host

Complex life cycles Ofter with one or more intermediate hosts and a definitive host

Points of entry: contaminated food and water, vectors, skin

Many use fecal oral transmission

18
Q

Name the diseases in humans of Helminths

A

Nematodes, cestodes(tapeworms), trematodes(flukes)

19
Q

What is the example for nematodes and the disease it leads to

A

Ascaris lumbricoides(Giant human intestinal roundworm)

Ascariasis

20
Q

Name the example of cestodes in the disease it leads to

A

Taenia solium

Taeniasis or cysticercosis

21
Q

Name the example for trematodes and the disease it leads to

A

Schistosoma mansoni

Schistosomiasis

22
Q

Are all eukaryotes pathogenic

A

No

Midterm #2 (5 decks)

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