Chapter7 Flashcards
1st person to see cells
Hooke
1st person to see living cells with a scope
Leeuwenhoek
Said all plants are made up of cells
Schleiden
Said all animals are made up of cells
Schwann
Studied cell reproduction and created the cell theory
Virchow
Name the 3 parts of the cell theory
1All living thugs have cells
2 cells only come from other cells
3 cells are the basic unit of structure and function in living things
No visible nucleus. No nuclear membrane. Has genetic material
Prokaryotes
Has visible nucleus with a membrane
Eukaryotes
Give an example of a prokaryote
Bacteria
Give an example of a eukaryote
Animals plants fungi Protista
Some materials can pass through the membrane while others cannot
Selectively permeable
All little things can pass through
Bilipid layer
Larger things can pass through
Protein channels
When solids or gases move from a higher concentration to a lower concentration
Diffusion
Point where concentration are the same inside and outside a cell
Equilibrium
Movement of water from high to low concentrations
Osmosis
High water/low salt
Hypertonic
Low salt/high water
Hypotonic
Same salt
Isotonic
Created when water enters cell
Osmotic pressure
Proteins help move materials across a membrane
Facilitated diffusion
Energy is needed to move materials across membrane low to high concentration
Active transport
Give an example of an active transport
Exocytosis
Taking in materials in sac like form
Endocytosis