Cell Transport and Macromolecules Practice

lipids

proteins

nucleic acids

carbohydrates

proteins

carbohydrates

phospholipids

nucleic acids

They both involve the movement of molecules through proteins

small molecules crossing the lipid bilayer (diffusion)

large molecules crossing through a protein (facilitated diffusion)

many molecules coming into the cell using a membrane vesicle (endocytosis)

many molecules coming out of the cell using a vesicle to fuse with the membrane (exocytosis)

Active transport, because the molecules are crossing the membrane using a protein

Passive transport because the molecules are crossing the membrane using a protein

Active transport because the molecules are moving from low to high concentration

Passive transport because the molecules are moving from high to low concentration

passive transport

road transport

food transport

active transport

energy is required

energy is not required