BISC 208

What did Thucydides’s observation that survivors of disease didn’t get reinfected tell him about infections and epidemiology?

shows an early understanding of the concept of immunity

after the first mention of the bacterium Staphylococcus aureus in a written source, it can be written as?

S. aureus

microorganisms are defined as organisms that are unicellular and too small to be viewed without a microscope

true

what is the major defining characteristic of eukaryotic organisms that differentiates them from prokaryotes?

their cells have a nucleus

what category of eukaryotes do helminths fall into?

protists

if a wave has a very high wavelength, what does that mean about the frequency?

it will be very low

if an objects surface transmits 100% of the light shined at it, what does this mean about its transparency?

it will be 100% opaque

what type of specimen preparation is most useful if you want to view cell movement?

wet mount

what revolutionary technique did ignaz semmelweis implement to decrease postpartum mother and infant mortality rates?

hand washing

eukaryotic cells are larger than prokaryotic cells

true

what type of solution is it if the concentration of solute outside a cell is lower than the concentration inside of a cell?

hypotonic

what structure is the organism clostridium botulinum capable of producing that aids in its ability to survive in extreme environments?

endospores

what functions are ribosomes responsible for?

synthesizing proteins

how would you define the relationship between a human and a tape worm taking up residence inside the human’s digestive tract and consuming all of the human’s nutrients?

parasitism

the microbiome of humans is nearly identical from person to person.

false

one defining characteristic of supergroup Ameobozoa is that they all use cilia for movement

false

several algal species are known to cause diseases in marine animals and plants.

false

which of the following statements about supergroup opisthokonata is incorrect?

organisms within this supergroup all contain cell walls composed of chitin

dimorphic fungi are capable of growing as yeasts at body temperature and molds at room temperature making them particularly infectious in humans?

true

which of the following is not a characteristic of viruses?

they are infectious, cellular pathogens

when a virus is in the lysogenic stage of its life cycle, is it capable of undergoing metabolism?

no

would we be capable of growing viruses in a standard hospital lab?

no

supergroup amoebozoa examples

nagleria fowleri and entamoeba histolytica

chromalveolata examples

toxoplasma gondii and plasmodium

excavata examples

giradia lamblia, trichomonas vaginalis, trypanozoma brucei

example of algae

dinoflagellates (red tides)

parasitic helminths are in the supergroup

opisthokonata

examples of phylum nematoda

ascaris lumbercoides and enterobius vermicularis

phylum playthelminths examples

schistosoma sp and taenia sp

fungi are in the supergroup

opisthokonata

examples of molds

aspergillus sp and penicillium sp

examples of yeasts

candida albicans and saccharomyces sp

example of dimorphic fungus

histoplasma capsulatum