Diffusion of water molecules through the cell membrane down (with) the concentration gradient
facilitated diffusion
osmosis
exocytosis
active transport
Process by which a cell surrounds and removes materials from inside the cell
diffusion
osmosis
endocytosis
exocytosis
The cell membrane is responsible for maintaining _____________, a stable internal environment
metabolism
homeostasis
energy
cytoplasm
Which molecule aids in moving substances across the cell membrane, ex. facilated transport?
lipid
cholesterol
carbohydrate
protein
Which molecule aids transmitting signals from outside to inside the cell?
lipid
carbohydrate
protein
cholesterol
Movement of substances against the concentration gradient; requires energy
diffusion
active transport
osmosis
passive transport
Large molecules such as glucose move down the concentration gradient with the help of proteins
exocytosis
osmosis
facilitated diffusion
active transport
Nonpolar molecules (ex: CO2 & O2) move across the lipid bilayer down the concentration gradient
facilitated diffusion
osmosis
active transport
diffusion
Process by which a cell surrounds and takes in material from its environment
osmosis
exocytosis
endosymbiosis
endocytosis
Property of the cell membrane alllowing some materials to pass through while keeping others out
semi-passive
selective permeability
osmosis
diffusion
Which type of transport requires energy to move substances across the cell membrane?
osmosis
active transport
passive transport
diffusion
What is identified by item 4 on the cell membrane?
cholesterol
protein
phospholipid
carbohydrate
What is identified by item 1 on the cell membrane?
carbohydrate
protein
phospholipid
cholesterol
What is identified by item 2 on the cell membrane?
phospholipid
cholesterol
carbohydrate
protein
Which molecule keeps phospholipids from sticking to each other?
lipid
protein
carbohydrate
cholesterol
Movement of substances across the cell membrane from high concentration to low concentration
endocytosis
active transport
diffusion
exocytosis