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Biology Flashcards 3-21-11

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Eukaryotic
having cells with 'good' or membrane-bound nuclei
heterotrophic
requiring organic compounds of carbon and nitrogen for nourishment
Multicellular
consisting of many cells
Invertebrates
Animals without backbones
Vertebrates
Animals with backbones
physiology
processes and functions of an organism
heterotrophs
organisms that cannot make their own food
consumers
an organism that obtains energy and nutrients by feeding on other organisms or their remains.
carnivores
Meat Eaters
herbivores
an organism that eats only plants.
omnivores
an organism that eats both plants and animals.
detrivores
feed on plant and animal remains
filter feeders
organism that takes in water to filter out the food and then releases the extra water (clam, oysters, sponge)
symbiotic relationship
close interaction between species in which one species lives in or on the other
respire
draw air into, and expel out of, the lungs
diffuse
to spread or scatter freely or widely
receptors
nerve cells that detect conditions in the body's environment
non-motile
(of spores or microorganisms) not capable of movement
motile
capable of movement
sexual reproduction
reproduction involving the union or fusion of a male and a female gamete
asexual reproduction
reproduction without the fusion of gametes
body symmetry
Radial (circular body pattern) or bilateral symmetry (dorsal, ventral, anterior, posterior--top/bottom/head/tail)
radial symmetry
the property of symmetry about an axis
bilateral symmetry
the property of being symmetrical about a vertical plane
cephilization
concentration of sensory and brain structures in the anterior end of the animal
body cavity
A fluid-containing space between the digestive tract and the body wall.