Homeostasis and Cellular Transport B.5c

What is active transport?

• The diffusion of water through a semipermeable membrane without the use of energy

• The random motion of molecules from a high concentration to a low concentration

• The movement of molecules against a concentration gradient; requires energy

• The movement of molecules across a membrane without the use of energy

What is ATP?

• The semipermeable barrier surrounding a cell

• A type of active transport in which large molecules are moved into a cell

• An energy molecule produced in mitochondria and used for cellular processes

• A difference in the concentration of a substance across a space or membrane

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

What is the cell (plasma) membrane made of?

• A layer of nucleic acids

• A double layer of carbohydrates

• A single layer of proteins

• A phospholipid bilayer with embedded protein channels

What is a concentration gradient?

• The ability to maintain stable conditions and function properly

• The diffusion of molecules via a transport protein without the use of energy

• The movement of molecules against a concentration gradient; requires energy

• A difference in the concentration of a substance across a space or membrane

What is diffusion?

• The movement of molecules across a membrane without the use of energy

• The diffusion of water through a semipermeable membrane without the use of energy

• The movement of molecules against a concentration gradient; requires energy

• The random motion of molecules from a high concentration to a low concentration

What is endocytosis?

• The random motion of molecules from a high concentration to a low concentration

• A type of active transport in which large molecules are moved into a cell by being engulfed by its membrane

• The diffusion of molecules via a transport protein without the use of energy

• The movement of molecules across a membrane without the use of energy

What is exocytosis?

• The ability to maintain stable conditions and function properly

• The movement of molecules against a concentration gradient; requires energy

• The diffusion of water through a semipermeable membrane without the use of energy

• A type of active transport in which large molecules are moved out of a cell by the budding off of vesicles

What is facilitated diffusion?

• A type of active transport in which large molecules are moved into a cell

• The random motion of molecules from a high concentration to a low concentration

• The movement of molecules against a concentration gradient; requires energy

• The diffusion of molecules via a transport protein without the use of energy

What is homeostasis?

• The diffusion of water through a semipermeable membrane without the use of energy

• The ability to maintain stable conditions and function properly

• The movement of molecules across a membrane without the use of energy

• The semipermeable barrier surrounding a cell

Tags

NGSS.HS-LS1-3

What is osmosis?

• The diffusion of water through a semipermeable membrane without the use of energy

• The movement of molecules against a concentration gradient; requires energy

• The diffusion of molecules via a transport protein without the use of energy

• The random motion of molecules from a high concentration to a low concentration

Tags

NGSS.MS-LS1-3