Cellular Level Of Organization Flashcards
Separates cell from its surrounding environment
Plasma, cell membrane
Thick gel-like substance inside cell composed of organelles suspended in watery cytosol
Cytoplasm
Large membranous structure near centre
Nucleus
Components of cell membrane
Phospholipid bilayer, lipids, proteins
Contains same concentration of solutes
Isotonic solution
Contains lower concentration
Hypotonic solution
Contains higher concentration of solutes
Hypertonic
Movement of substances
Diffusion
Diffusion of water through a semi-permeable membrane
Osmosis
Requires no additional help for diffusion to occur across a semipermeable membrane
Simple diffusion
Uses atp as its energy source
Primary active transporter
Examples of secondary active transporter
Sodium-glucose symporter
Sodium-hydrogen ion antiporter
Transports material into cell by surrounding it ina. Portion of its cell membrane and pinching off that portion, “inside cell:
Endocytosis
Endocytosis of large particles to digest
Phagocytosis
Endocytosis of fluid together with its dissolved substances
Pinocytosis
Process of protein synthesis
Nucleus Ribosomes Transport vesicles Golgi apparatus Secretory vesicles Plasma membrane
Membrane bound organelle with highly folded inner lipid bilayer membrane to increase surface area, contain enzymes involved in cellular respiration conversion of stored energy into cellular energy
Mitochondria
Organelle containing enzymes, break down and digest foreign material and unnecessary damaged cell components
Lysozyme
Organelle contains enzymes, involved in lipid metabolism and chemical detoxification
Peroxisome
Hollow cylinders allowing proteins to travel, breakdown of abnormal proteins
Proteosome
Membrane around nucleus
Nuclear envelope
Passageway between nucleus and cytoplasm for substances
Nuclear pore
Manufactures RNA to construct ribosomes
Nucleolus
Resting phase
G0