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Biology: Quiz 1

Who developed Gram Staining in 1884? Hans Christian Gram
Gram Staining is composed of what two parts? primary crystal violet stain and counter safranin stain
What are the two major classes of bacteria? Gram + (purple) and Gram - (pink)
Cell walls do what? strength/stability and protection
How many methods in the gram staining process? 3
study of life biology
basic unit of life organism
interaction of living and non-living; study of ecosystem ecology
bare necessities of life water, nutrients, and energy
How can organisms receive energy? self produced or stolen
produce energy for the rest of the web of life producers
primary consumers herbivores (1*)
secondary consumers carnivores (3*)
eat dead/decaying organisms scavengers
return nutrients to soil and get energy from the sun; complete the movement of matter; without these, soil would be nutrient free decomposers
the sun provides almost all of this to Earth as light energy
light energy ---> chemical energy (sugars) photosynthesis
a complex interaction to food chains food web
energy moves with arrows; matter stores energy (sugars, fats, proteins) matter and energy
community and abiotic enviroment in a specific area ecosystem
all ecosystems in the world biosphere
an organism's role in a community (defined by what it eats, what eats it, etc.) niche
location that an organism lives habitat
bear eats slamon direct interaction
throw away plastic ring -> ring ends up in ocean -> animal gets trapped in it -> animal is seriously injured/dies indirect interaction
relationships are not always equal community interactions
prey harmed to benefit predator predator-prey
parasite injures the host to get nutrients; parasite may weaken or kill host parasite interactions
one example of symbiosis parasitism
2 or more organisms live in direct physical contact symbiosis
example of symbiosis lichens
microscopic producers provide energy lichens
consumers provide nutrients to producers algae
mutually beneficial relationship
allows balance to be maintained; harder for individuals to access resources communal benefits of competetion
too many grasshoppers -> less marsh grass live and snails to die out -> snakes have less food excessive competition
Created by: jbewley1