Cell Transport Mechanisms explores the fundamental processes of particle movement across cell membranes, including diffusion in cell membranes process, osmosis in plant and animal cells, and active transport and energy requirement.
Key points:
- Diffusion involves particle movement from high to low concentration areas without energy input
- Osmosis specifically refers to water molecule movement across partially permeable membranes
- Active transport moves particles against concentration gradients using cellular energy
- Cell membrane permeability is selective, allowing only certain molecules to pass through
- Multiple factors influence transport rates, including temperature, concentration gradient, and surface area
