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Bio 122 Drexel_ EXAM 1 (1)
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Bio 122 Drexel_ EXAM 1 (1)
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Bio 122 Drexel: EXAM 1What are the 5 unifying themes of bio? - ANS-1. organizational hierarchy emerges function
properties
2. organisms interact w/environment
3. unity
4. diversity
5. evolution mediated by natural selec.
life emerges.... - ANS-@ level of cell
emergent properties - ANS-new properties emerge @ each level
"the whole is greater than the sum of its parts"
list of organizational hierarchy -
ANS-biosphere-->ecosystem-->community-->pop-->organism-->organ sys-->
organs-->tissues-->cells-->organelles-->molecules-->atoms
organelles - ANS-macromolecular structures w/spec functions
cells - ANS-living entities distinguished from their environment by a molecular membrane
from molecules to organelles to cells - ANS-- Organelles contain molecules, which are clusters
of atoms held together by chemical bonds
- An organelle is cellular structure that forms a specific function within some cells
From cells to tissues to organs - ANS-- A cell is a unit of living matter *separated from its
environment by a boundary called a membrane*
-Each tissue has a specific function and is made up of a group of similar cells
-Each organ is made up of several different tissues
Population - ANS-individuals of a species within a specific area
*ex. GW sharks in Atlantic Ocean
Community - ANS-array of organisms living in a particular ecosystem
ex. all fish in Atlantic Ocean
Ecosystem - ANS-all biotic and abiotic components of particular area
ex. Atlantic Ocean
Biosphere - ANS-all the environments on Earth that support life
ex. Earth
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