Unit 2

What is the level fro list to most?

Atom—>Molecules—>Organelles—>cell—> tissue—>organ —> organ sys—> organism→ population—>communities—>ecosystem→biosphere

What are the 8 characteristic of living cell?

• Respond to stimuli (adaptation)

• made of cell

• maintain homeostasis

• contain genetic material

• able to reproduce

• Use energy

• growth and develop

• can evolve over generation

What is a molecular evidence?

this is when carl wose used rRna gene and discovered the 3 domain type

what is the 3 domain type?

Archea, bacteria, eukarya

what is the different between molecule and compound

ex: Cl2 is molecule

NaCl is compound

what bond form between cation and anion

Ionic and hydrogen bond

what are the five characteristic of water

• high specific heat

• expand upon freezing— When most liquids cool down, their molecules slow down and pack closer together, making the solid state smaller and denser. As water cools toward freezing (0°C / 32°F), its molecules lock into a rigid, open-spaced hexagonal crystal lattice due to hydrogen bonds (open hexagonal crystal lattice that takes up about 9% more volume than liquid water). This fixed network pushes the water molecules farther apart than they were when sliding around freely as a liquid

• cohesion

• adhesion

• universal solvent

what is population

same species live in same area

what is communities

diff species live in diff places

what is ecosys contain?

non living + living