The property of a membrane by which it permits the passage of certain substances but restricts the passage of others; Plasma membranes permit some substances to pass more readily than others.
selectively permeable membrane
movement of molecules or ions down a concentration gradient due to their kinetic energy until they reach equilibrium
Passive movement of water molecules across a selectivity permeable membrane from an area of higher to lower water concentration until equilibrium is reached (diffusion of water)
A cell undergoes nuclear division
What is the only cells that has a flagellum in the body
Synthesizes glycoproteins and phospholipids that are transferred to cellular organelles, inserted into plasma membrane, or secreted during exocytosis ( covered by ribosomes and is attached to the nuclear envelope)
Rough Endoplasmic Reticulum
synthesizes fatty acids and steroids, inactivates or detoxifies drugs, removes phosphate group from glucose-6- phosphate,and stores and releases calcium ions in muscles cells (lacks ribosomes)
Smooth Endoplasmic reticulum
Membranous network of flattened sacs or tubules.
Entry (cis) face accepts proteins form rough ER; Exit (trans) face modifies molecules further, then sort and package them for transport to their destinations (the modifying, sorting and packaging of proteins for secretion. It is also involved in the transport of lipids around the cell, and the creation of lysosomes.)
fuses with digests contents of endosomes, pinocytic vesicles, and phagosomes and transports final products of digestion into cytosol (removes waste)
Site of aerobic cellular respiration reactions that produce most of a cell's ATP. Plays an important early role in apoptosis