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