1. cell wall and nucleus

1. cell wall and chloroplast

1. plasma membrane and nucleus

1. plasma membrane and cytoplasm

Mitochondr

Cell membrane

chloroplast

channel protein

1. Breaks downs lipids, carbohydrates, and proteins from foods

1. Stores water, salt, proteins, and carbohydrates

1. Keeps the cell wall in place

1. Regulates the movement of materials in and out of the cell

Lipids

Carbohydrates

Proteins

Bilipids

1. the 

   1. phosphate groups are hydrophobic.

1. fatty acid tails are hydrophilic 

1. proteins are located only between the two layers. 

1. phosphate heads are oriented toward the exterior of the cell or toward the cytoplasm.

1. the size of the molecule 

1. the chemical properties of the molecule

1. the charge of the molecule 

All of the Above

1. at the surface of the membrane

1. in the interior of the membrane 

1. spanning the membrane 

1. where the environment is hydrophilic

1. small uncharged polar molecules 

1. protein hormone

1. large uncharged polar molecules 

1. glucose

1. two layers of carbohydrates with proteins between the lipid layers

1. two layers of proteins with lipid layers between the protein layers

1. A single layer of protein on the outside and a single layer of lipids on the inside

1. a double layer of lipid molecules with protein molecules between the layers