Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
|
Active transport
|
Movement of ions / molecules across a cell membrane against their concentration gradient with the expenditure of cellular energy.
|
|
|
Amphion
|
A molecule carrying both a positive and a negative charge.
|
|
|
Amphipathic
|
Possessing both polar / hydrophilic and non-polar / hydrophobic regions.
|
|
|
Amphoteric
|
Possessing both a positive and a negative charge / possessing both basic and acidic groups.
|
|
|
Artherosclerosis
|
Thickening of inner walls of arteries due to deposits of cholesterol
|
|
|
Conjugated proteins
|
Proteins that consist of amino acids and a non-protein component (prosthetic group).
|
|
|
Diffusion
|
Random movement of ions / molecules from a region where their concentration is high to a region where their concentration is lower (down a concentration gradient) until an equilibrium is reached.
|
|
|
Endocytosis
|
Bulk transport of substances out of a cell by the fusing of a vesicle / vacuole to the plasma membrane.
|
|
|
Essential fatty acids
|
Fatty acids that cannot be synthesized by the body and which must be obtained from the diet.
|
|
|
Excocytosis
|
Bulk transport of substances into a cell by the invagination of the plasma membrane.
|
|
|
Facilitated diffusion
|
Diffusion of ions / molecules across cell membranes with the aid of transmembrane protein molecules.
|
|
|
Isoelectric point
|
The pH value when a zwitterion or amphoteric molecule has no net electric charge because it has equal number of cations and anions.
|
|
|
Osmosis
|
The diffusion of solvent / water molecules across a semi-permeable membrane.
|
|
|
Pressure potential
|
The pressure exerted on a fluid by its surroundings.
|
|
|
Primary structure
|
The precise linear sequence of amino acids in a polypeptide / protein molecule.
|
|
|
Prosthetic group
|
Non-protein substance, when it is combined with a protein.
|
|
|
Quaternary structure
|
The assembly of multiple folded protein molecules in a multi-subunit complex.
|
|
|
Secondary structure
|
The folding of a polypeptide chain resulting in an alpha helix, beta sheet or a random coil structure due to hydrogen bonding.
|
|
|
Simple proteins
|
Proteins that consist entirely of amino acids.
|
|
|
Solute potential
|
The force of attraction on water molecules caused by the presence of solutes inside a solution.
|
|
|
Tertiary structure
|
A protein's three-dimensional structure formed by complete folding of the sheets and helices of a secondary structure held in position by hydrophobic and hydrophilic interactions.
|
|
|
Water potential of a plant cell
|
The sum of the cell's solute potential and its pressure potential.
|
|
|
Water potential of a solution
|
The tendency/potential of water to move out of a solution by osmosis.
|
|
|
Zwitterion
|
A molecule carrying both a positive and a negative charge.
|
