Passive & Active Transport

The natural spreading of particles through a liquid or gas is called:

• dilution
• diffusion
• differentiation
• fusion

What does it mean when substances move "down a concentration gradient"? They move from _______.

• few to many particles
• areas with a little water to areas with lots of water
• one side of a cell membrane to the other
• many to few particles

If you were looking for transport proteins, where would you find them?

• in a cell's nucleus
• in a cell's membrane
• in a cell's cytoplasm
• in a cell's ER

What process releases substances from a cell?

• hypocytosis
• endocytosis
• mesocytosis
• exocytosis

What is the main function of white blood cells?

• To fight germs

• To absorb substances

• To supply cells with energy

• To boogie

What can you infer about the membrane of a vesicle or vacuole? It's made of ______.

• transport proteins
• water molcules
• cellulose
• the same substance as the cell membrane

What might happen if a cell did not have any ATP?

• It wouldn't have enough energy to carry out active transport

• Its transport proteins would be made of carbohydrates

• Its cell membrane would not be semi-permeable

• It couldn't boogie

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

How do transport proteins move substances across membranes?

• They move inside the membrane, carrying the substance
• They change shape
• They rip open a temporary hole in the membrane
• They increase the concentration gradient inside the cell

What is the difference between active and passive transport?

• Active involves oxygen and water; passive transport does not.

• Active occurs only in nerve cells; transport occurs in all cells.

• Active moves molecules across cell membranes; passive does not.

• Active transport requires energy; passive transport does not.

Where do cells get the oxygen, water, and nutrients they need to function?

• From the bloodstream

• From the stomach

• From the heart

• From the lungs

Tags

NGSS.MS-LS1-2