Biology Unit 3 Cells

polar head attracts water, nonpolar tail repels water

• transport protein

• carbohydrate chain

• phospholipids

• cholesterol

helps large molecules like glucose cross the membrane

• carbohydrate chain

• phospholipids

• cholesterol

• transport protein

helps with cell-to-cell communication & signaling

• phospholipids

• carbohydrate chain

• transport protein

• cholesterol

helps keep the membrane fluid & flexible

• transport protein

• cholesterol

• phospholipids

• carbohydrate chain

the cell membrane is also called the...

• plasma membrane

• stretch membrane

• insane in the membrane

• cytoskeleton

the cell membrane is....

• solid

• translucent

• semi-permeable

• selectively permeable

does passive transport go with or against the concentration gradient

• against

• with

the movement of molecules from high concentration to low concentration without the use of energy is....

• osmosis

• facilitated diffusion

• passive transport

• sitosis

does active transport go with or against the concentration gradient?

• with

• against

the movement of molecules from low to high concentration

• active transport

• diffusion

• passive transport

• osmosis