Bio 5 2
Terms
undefined, object
copy deck
- A design where proteins "float" in a lipid bilayer
- fluid mosaic model
- What are the properties of the "head" of the lipid
- Contains phosphorus, electrically charged, hydrophilic
- What are the properties of the "tail" of a lipid.
- Long, nonpolar, fatty acid, hydrophobic
- What kind of macromolecule is cholesterol.
- lipid
- How do hibernating animals change their membranes?
- They replace saturated fats with unsaturated fats
- Proteins imbedded in the bilayer
- integral membrane proteins
- Proteins without hydrophobic regions
- Peripheral membrane proteins
- Proteins that potrude on both sides of the membrane.
- transmembrane proteins
- What are two ways that the proteins in a membrane can be restricted?
- cytoskeleton and lipid rafts
- What is the funciton of carbohydrates on the membrane?
- recognition site for other celss and molecules
- What two processes allow cells to arrange themselves in groups?
- cell recognition and cell adhesion
- The binding of cells in a tissue, the same kinds of molecules sticking out of the cells bind to eachother
- homotypic
- Binding between cells with different types of proteins.
- heterotypic
- When cells contribute material to additional membrane structures that help cement them together.
- cell junctions
- Junctions thatseal tissues and prevent leaks.
- Tight junctions
- What are three types of specialized cell junctions?
- tight, desmosomes and gap
- Hold adjacent cells firmly together.
- desmosomes
- Facilitate communication between cells.
- gap junctions
- What is the difference between active and passive transport
- active transportation involves the input of chemical energy
- Channels that allow water into a cell rapidly.
- aquaporins
- Facilitate diffusion by transporting polar molecules
- carrier proteins
- Transporter protein that moves a single solute in one direction.
- uniport
- Transporter protein that moves two solutes in one direction.
- symport
- Transporter protein that moves two solutes in opposite directions.
- anitport
- When a vesicle pinches off the plasma membrane and enters the cell
- endocytosis
- When vsicles fuse with the plasma membrane and release their contents.
- exocytosis
- What are the three kinds of endocytosis?
- phagocytosis, pinocytosis, and receptor-mediated endocytosis
- Cellular eating
- phagocytosis
- cellular drinking
- pinocytosis