Please enable JavaScript.
Coggle requires JavaScript to display documents.
CellsLanPham.pdf (Plasma membrane (Endocytosis (The large particles and…
CellsLanPham.pdf
Plasma membrane
Membrane made of double layer of lipids (phospholipids), barrier between watery exterior and watery interior. Some of membrane proteins act as receptors to receive a message and transmit to inside. The processes involved with transport of substances into/out of the cell.
Facilitated Diffusion
No energy required. Some of molecules are moving down their concentration gradient, diffusing through the plasma membrane by moving through a specific integral protein.
Simple Diffusion
Small, uncharged molecules oxygen, carbon dioxide, fat soluble can pass freely through the lipid bilayer, no energy required.
Active Transport
Cell energy required inform of ATP. Moving against concentration gradient. The largest molecules and large solid particles are actively transported through the plasma membrane.
Endocytosis
The large particles and macromolecules enter cells. The vesicle form and take in whatever is outside the cell.
Pinocytosis: "Cell Drinking". This is non-selective way of sampling the extracellular fluid, function in nutrient absorption.
-
Phagocytosis: "Cell Eating". Phagocytes that engulfs an entire cell or cell debris or pathogen. Such cells help to police and protect the body by ingesting bacteria, viruses.
Exocytosis
An active mechanism by which substances move from the cytoplasm to the outside of the cell. Release of mucus or protein hormones from the gland cells of the body.
Cytoplasm
Lies internal to the plasma membrane and external to the nucleus. Most cellular activities are carried out in the cytoplasm which consists of cytosol, organelles, inclusions.
Organelles
Ribosomes: dense particles, ribosomal RNA and protein; free or attached to rough ER. The sites of protein synthesis.
Rough endoplasmic reticulum: with ribosomes, makes protein and the cell's membranes.
-
-
-
Mitochondria: rodlike, double membrane structure.
-
-
-
-
-
Cytosol: Jelly-like, fluid containing (water, ions, enzymes). It makes up about half the volume of the cytoplasm
Nucleus
Controls center of the cell, place of genetic information material (DNA).