Homeostasis

Temperature

Blood pH

Blood sugar

Vitamin D levels

Movement from low to high concentration

Movement from high to low concentration

Movement of water only

Movement of solids only

Only some things can go through it

Everything can go through it

Nothing can go through it

It is made of two layers

It is also called the phospholipid bilayer.

It allows only some molecules to pass through.

It is completely impermeable to all substances.

Small particles can diffuse through it easily.

Semipermeable membrane, phospholipid bilayer, plasma membrane

Cell wall, cytoplasm, nucleus

Mitochondria, ribosome, lysosome

Chloroplast, vacuole, Golgi apparatus

The phosphate head is hydrophilic and the lipid tails are hydrophobic.

The lipid tails are hydrophilic and the phosphate head is hydrophobic.

Both the phosphate head and lipid tails are hydrophilic.

Both the phosphate head and lipid tails are hydrophobic.

Plasma membrane, phospholipid bilayer, selectively permeable membrane

Cell wall, cytoplasm, nucleus

Mitochondria, ribosome, lysosome

Protein channel, lipid raft, carbohydrate chain

Channel proteins allow certain substances to enter or leave the cell.

Channel proteins are shaped like a tunnel through the cell membrane.

Channel proteins are only found in plant cells.

Channel proteins are made of lipids.

By using a channel protein to move potassium out of the cell

By storing potassium in the nucleus

By breaking down potassium into other elements

By increasing the size of the cell

Nucleus

Golgi Body

Mitochondria

Ribosome