Prepare for the Foundations of Biology Exam 1. Dive into key biological concepts with multiple choice questions, hints, and explanations. Ace the exam with our efficient study methods!

Multiple Choice

Osmosis is diffusion of water across a membrane that solutes cannot pass through; this process is driven by

Osmosis is driven by differences in solute concentration across a membrane, creating an osmotic gradient. Water moves to the side with higher solute concentration because that side has lower water potential, and diffusion of water continues until the potential is balanced. This movement is passive; it requires no input of energy. ATP would power active transport, which is not how osmosis works. The movement of solutes themselves (diffusion of solutes) is different from osmosis, which specifically refers to water movement. Endocytosis is a cellular process that uses energy to engulf large particles, not the diffusion of water through a membrane.

Osmosis is driven by differences in solute concentration across a membrane, creating an osmotic gradient. Water moves to the side with higher solute concentration because that side has lower water potential, and diffusion of water continues until the potential is balanced. This movement is passive; it requires no input of energy.

ATP would power active transport, which is not how osmosis works. The movement of solutes themselves (diffusion of solutes) is different from osmosis, which specifically refers to water movement. Endocytosis is a cellular process that uses energy to engulf large particles, not the diffusion of water through a membrane.