Cell & Molecular Biology - Cell Membranes & Transport

These flashcards cover key concepts and mechanisms of cell membranes and transport from the lecture.

Diffusion occurs when substances move from regions to regions.

High-concentration; low-concentration.

Osmosis is a special case of diffusion that involves __ moving across lipid bilayers.

Water.

A __ solution has a higher concentration of solute outside the cell than inside.

Hypertonic.

In __ transport, substances move against their gradient and require energy input.

Active.

The __ model describes the structure of the plasma membrane as a dynamic mosaic of proteins and phospholipids.

Fluid-mosaic.

Facilitated diffusion occurs through __ proteins and does not require energy.

Channel or carrier.

The sodium-potassium pump transports Na+ and K+ ions against their __ gradient.

Concentration.

The __ is the pathway that proteins take from the endoplasmic reticulum to the Golgi apparatus.

Secretory pathway.

Receptor-mediated endocytosis is one of the three pathways that direct materials to the __ for recycling.

Lysosome.

The addition of carbohydrate groups to proteins within the rough endoplasmic reticulum is called __.

Glycosylation.