In cells, some molecules can move down their concentration gradients by crossing the lipid portion of the membrane directly, while others must pass through membrane proteins in a …

There are two main categories of passive transport: simple diffusion (sometimes called “diffusion”) and facilitated diffusion. Both types of passive transport involve substances moving across the …

Some ways that diffusion can occur would be through exploration, military conquest, missionary work, mass media, tourism, and even through the internet. So here are a few examples that …

Movement Across a Membrane and Energy There are two major ways that molecules can be moved across a membrane, and the distinction has to do with whether or not cell energy is …

Explore how diffusion and osmosis drive the movement of water across membranes. Understand hypotonic, isotonic, and hypertonic solutions and their effects on cells.

Is osmosis similar to simple diffusion in the respect that simple diffusion doesn't require energy, or is osmosis more like active transport, where ATP is required to move particles across the …

Here, the cell can't import glucose for free using diffusion, because the natural tendency of the glucose will be to diffuse out rather than flowing in. Instead, the cell must bring in more …

Diffusion is the movement of substances from a high to low concentration, while osmosis is the diffusion of water across a cell membrane that moves from high to low water potential (or, low …

Not everything enters the cell through passive transport. Only the smallest molecules like water, carbon dioxide, and oxygen can freely diffuse across cell membranes.

Facilitated diffusion AP.BIO: ENE‑2 (EU), ENE‑2.G (LO), ENE‑2.G.1 (EK), ENE‑2.G.3 (EK), ENE‑2.G.4 (EK) Google Classroom Microsoft Teams