Ch 3: Cell Biology Flashcards
 what is the inside space of a cell membrane?
Intracellular
What is the space outside the cell membrane
Extracellular
What is phospholipids
A bilayer with polar heads facing interior and exterior of the cell
What is cholesterol?
Interspersed among phospholipids
What is cytoplasm
Contains organelles
What is the nucleus
Contains DNA
What is cytoplasm
Space in Cell
What is cytosol?
Fluid in cytoplasm
What are cadherins?
Attach cells to other cells
What are intergrins?
Integral proteins that attach to extracellular molecules
What is a non-gated ion channels?
Always open
What is a gated ion channels
Open/close by stimuli
What is another name for carrier proteins
Transporters
What is a uniporter
Moves one particle
What is a symporter?
Moves two particles in the same direction and same time
What is an antiporter?
Moves two particles in opposite directions at the same time
What are the three components of the cytoskeleton?
- microtubules - made up of tubulins
- microfilaments
- intermediate filaments
What’s another name for simple diffusion
Passive diffusion
What is simple diffusion
Movement of solutes through semi permeable membranes
What is facilitated membranes
The presence of protein carriers
What is active transport?
Using ATP to accumulate substances
What is osmosis?
Movement of water through semi permeable membranes
What is solute
Substance added to solvent that dissolves in a solvent
What is the order of movement through plasma membranes
- Simple diffusion
- Facilitated memebrane
- Active transport
- Osmosis
What is endocytosis
Process brings material into the cell using vessicles
What is exocytosis?
Process that carries materials out of cells using vesicles
What are two types of endocytosis
Phagocytes
Pinocytosis
What is Phagocytes?
Sells eating (solid particles)
What is pinocytosis?
Sells drinking (liquid particles)
What is osmosis?
Diffusion of water
What is cillia on cell surface?
-appendages from cell surface
- Moves material over cell surface
Ex: Respiratory tract
What is flagella on the cell surface
- longer than cillia
- usually one per cell
- moves the cell in wave like fashion
Ex: sperm cell
What is micro villi on the cell surface
-extension of plasma membrane
-Increase the cell surface area for absorption
-There’s many on each cell and don’t move
Ex: small intestine
