Flashcards: Cell Membrane Function and Transport — 10 cartões

Cell membrane structure — key components?

Phospholipid bilayer, proteins, cholesterol, glycocalyx.

Phospholipid Bilayer — structure?

Two-layer membrane with hydrophilic heads, hydrophobic tails.

Membrane transport — energy use?

Passive: no; Active: yes.

Fluid Mosaic Model — description?

Dynamic membrane with lipids, proteins, cholesterol, carbohydrates.

Membrane potential — main ion?

Potassium (K+).

Integral Proteins — role?

Embed fully; facilitate transport and signaling.

Peripheral Proteins — function?

Attach temporarily; involved in signaling, shape.

Glycocalyx — composition?

Glycoproteins and glycolipids on cell surface.

Cholesterol — membrane role?

Modulates fluidity and stability.

Passive Transport — definition?

Substances move without energy, driven by gradients.