September 4th Flashcards
Biological diversity & the origin of life
Gene
Discrete unit of information
Genome
Entire set of DNA instructions
Continuity of life depends on…
Faithful copying of DNA into daughter cells amen!
Characteristics of all living organisms (there’s 7)
- G rowth, Reproduction, Development
- C ellular organization
- H omeostasis
- O rdered complexit
- S ensitivity to enviornment
- E volutionary adaptation
- E nergy utilization
Cellular level of hierarchical organization of living systems consists of…
Atoms, molecules, organelles, cells
Organismal level of hierarchical organization of living systems consists of…
Tissues, organs, and organ systems
Non-trace elements in living systems
NCHOPS (nitrogen, carbon, hydrogen, oxygen, phosphorus, sulfur)
Chemical structure of water enables its function as a
solvent xx
The chemical structure of water enables its function as a solvent for…
large molecules
water dissolves what kind of molecules/something else?
polar molecules and ions
the chemical struc of H20 enables function to org
non-polar molecules (eg lipids)
water causes hydrophobic molecules to
aggregate/assume specific shapes
What did Stanley Miller do?
Reconstituted early earth conditions in a closed system (1958)
What did Miller’s experiment have in it?
W AHEM (Water, ammonia, hydrogen gas, energy, and methane)
Miller experiment demonstrated
abiotic synthesis of organic compounds
