Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
chapter 4 human pers
| Term | Definition |
|---|---|
| endocytosis | cell takes in materials by enfolding and enclosing them; includes phagocytosis and pinocytosis |
| endoplasmic reticulum | Network of membranes forming channels through the cytoplasm of a cell |
| carrier-mediated transport | transport of ions or molecules across a cell membrane by special proteins |
| vesicular transport | transport of materials into or out of a cell in membrane-bound sacs |
| fluid mosaic model | currently accepted model of a cell membrane structure |
| facilitated diffusion | carrier proteins assist the movement of substances through the cell mebrane |
| hydrophobic | tail of a phospholipid, water hating |
| hydrophilic | head of phospholipid, water loving |
| lipid | Large organic Molecules made up of fatty acids and glycerol |
| microtubules | Fine tubes that help to maintain the shape of the cell and hold organelles in place |
| osmosis | diffusion of water molecules through a deferentially permeable membrane, form high to low concentration |
| osmotic pressure | pressure due to differences of concentration on either side of the membrane. |
| passive processes | no input of energy |
| concentration/diffusion gradient | A difference in concentration of a solution between the inside and outside of the cell |
| phagocytosis | cell surrounds, takes in, solid particles |
| exocytosis | the contents of the vesicle of a cell are pushed out though the cell membrane |
| diffusion | movement of particles of a liquid or a gas so they are evenly distributed over the space available |
| active processes | a process that needs energy |
| Active transport | the use of energy to move substances, ions across the cell membrane |
| bilayer | Two layers that make up a single membrane |
| cell membrane | forms the external boundary of a cell |
| channel proteins | proteins that allow ions, small molecules and water to pass through the cell membrane |
| deferentially permeable | permits the passage of certain substances but restricts the passage of others |
| phospholipid | lipid molecule containing a phosphate group |
| pinocytosis | which a cell enfolds, takes in, drops of liquid |
| homeostasis | relatively constant environment in a cell, despite external environment |
| vesicles | small membrane-bound cavity in the cytoplasm, smaller than a vacuole |
| golgi body | structure in the cytoplasm of a cell consisting of a stack of flattened channels |
| tissue/extracellular fluid | fluid found in the spaces between the cells |
Created by:
keavyh1
Popular Biology sets