A substance moving across a membrane against a concentration gradient is moving by                   . a. passive transport; b. osmosis; c. facilitated diffusion; d. active transport; e. diffusion

Video transcript

Hello everyone here? We have a question that says in blank transport, the molecules move against a concentration gradient, whereas in blank transport the molecules move along the concentration gradient. In active transport. The molecules move against a concentration gradient and therefore need A T. P. So a passive active is incorrect. B diffusion and osmosis is incorrect. And in passive transport the molecule moves along the gradient. So our answer here is see active, passive and active transport. The molecules move against the concentration gradient, whereas in passive transport the molecules move along the concentration gradient. Thank you for watching. Bye.