Cell Transport Amoeba sisters

The cell membrane is important for maintaining ____________________ because it controls what enters and leaves the cell

• cell membrane

• homeostasis

• water

• enzymes

Tags

NGSS.MS-LS1-2

what is this image?

• DNA

• RNA

• water

• Phospholipid bilayer diagram

What is simple diffusion?

• when molecules spread from an area of high to an area of low concentration

• it controls what enters and leaves the cell

• how food and candy travel across the membrane

• When molecules for from areas of low concentration to high

Tags

NGSS.MS-LS1-2

Select all the statements below that would be TRUE about simple diffusion?

• a form of passive transport

• molecules travel with concentration gradient

• it is how oxygen and carbon dioxide travel across the membrane

• This transport is typical for large molecules.

• no energy needed

Are endocytosis and exocytosis forms of passive or active transport?

• passive transport

• active transport

What is a scenario where a cell may need to perform a form of endocytosis.

• when transporting large molecules

• when transporting small molecules

• when transporting amazon packages

• when releasing a very large molecule from the cell

• when releasing a very small molecule from the cell

What is a scenario where a cell may need to preform a form of exocytosis.

• when transporting large molecules

• when transporting small molecules

• when transporting amazon packages

• when releasing a very large molecule from the cell

• when releasing a very small molecule from the cell

For water to travel across the cell membrane at a substantial rate, the water molecules travel through protein channels known as aquaporins. (how??)

• simple diffusion

• facilitated diffusion

• active transport

While water molecules are polar, they are also very small. One face not mentioned in the video is that some water molecules are able to squeeze directly though the phospholipid bilayer due to their small size

• simple diffusion

• facilitated diffusion

• active transport

Charged ions are traviling though a cell membrane with the concentration gradient

• simple diffusion

• facilitated diffusion

• active transport