Biology Quiz: Cell Membranes

Think you know all about cell membranes? Use this self-quiz to make sure you remember active transport, plasma membranes, lipid bilayer, and more. Continue reading

My Cell Membranes

Use these flash cards to practice your grasp of endocytosis, exocytosis, turgor pressure, and dozens of other biology terms. Continue reading

Plasma Membrane – Plant Cells

The plasma membrane is a selectively permeable membrane made up of a lipid bilayer and proteins surrounding the cell but inside the cell wall. Explore the process, structure, and function of a plant cell’s plasma membrane with this interactive tutorial. Continue reading

Plasma Membrane – Animal Cell

The plasma membrane is a selectively permeable membrane made up of a lipid bilayer and proteins surrounding the cell. Explore the process, structure, and function of an animal cell’s plasma membrane with this interactive tutorial. Continue reading

Osmosis in an Animal Cell

In biological terms, osmosis is the diffusion of water though a membrane to a region with a lower concentration of water. Do you understand how osmosis works in an animal cell? Take this interactive tour to help you master the concept and terminology. Continue reading

Osmosis in a Plant Cell

In biological terms, osmosis is the diffusion of water though a membrane to a region with a lower concentration of water. Do you understand how osmosis works in a plant cell? Take this interactive tour to help you master the concept and terminology. Continue reading

Diffusion Through a Membrane

Diffusion is the net movement of particles (atoms, molecules, or ions) from a highly concentrated region to a region of low concentration. Understanding diffusion through a membrane is a key biology concept. Take this interactive tour to help you master the process and terminology. Continue reading

Plant Cell Cycle Cramlet Review

All college students will have to take at least one science course, and most of us will end up choosing Biology. This course will usually be more in-depth than the Biology class we took in high school, though, so we Continue reading