Test One Flashcards
Biology
Scientific study of life
Properties of Life (7)
Order Reproduction Growth and Development Energy Processing Regulation Response to Environment Evolutionary Adaptation
Organization of the Biosphere
Biosphere→ Ecosystem(living and non-living)→ Community(living) → Population(organisms of same species that can reproduce together) → Organism(individual living entity) → Organ System→ Organs→ Tissues→ Cells(basic unit of life) → Organelles→ Molecules→ Atoms(smallest component of life)
Ecosystem
Living and non-living
Community
Living
Population
Organisms of the same species that reproduce together
Organisms
Individual living entities
Cells
Basic unit of life
Atom
Smallest component of life
Reductionism
approach of reducing complex system to simpler components
How smaller parts work together to make a system
Systems Biology
constructs models for the dynamic behavior of a whole biological system
How parts work and effect each other
Ex: how might a drug that lower blood pressure affect the functions of your organs throughout the human body
Negative Feedback
As more of the product accumulates , process slows and less product is produced
Blood sugar
Positive Feedback
Stimulus increases production
Example: breastfeeding and childbirth
Emergent Properties
Arrangement and interactions between component parts (NOT UNIQUE TO LIFE)
Bicycle parts have to be put together for the bicycle to work
Understanding of biology balances…
Reductionism and emergent properties
Lowest level of organization that can preform all activities of life
Cell
All cells are..
Enclosed by a membrane
Use DNA as their genetic information
Eukaryotic Cell
Membrane enclosed organelles
Nucleus (largest organelle)
Prokaryotic Cell
Simple, small
NO NUCLEUS
organelles NOT enclosed
Prokaryotic includes
Bacteria and Archaea
Eukaryotic includes
Animals
Fungi
And all other forms of life
Core theme of biology
Evolution
Life is distinguished by…
It’s unity and diversity
Natural Selection
Unequal reproductive success leads to evolution of adaptions in populations
