Term | Definition |
Compound | A pure substance made up of two or more chemical elements bonded together |
saturated | maximum uptake of a substance has been achieved |
Antibodies | A type of protein that reacts in a specific antigen, part of the body defence mechanism |
Aqueous | Used to describe substances that contain water |
Biconcave | Concave shape on either side of a lens |
Bond | Something that combines or holds things together |
Brownian Motion | Describes a pattern of random movement of particles in liquids or gases |
Cloaca | The terminal part of the gut in most vertebrates except the higher mammals |
Compound | A pure substance composed of two or more elements |
Ion | An atom that carries a charge due to loss or gain of electrons |
Isotonic | Similar solute concentration as another fluid |
Lenticel | Pope found on stems and roots in higher plants for gas exchange |
Lignin | Thickening substance found in cell walls of plants |
Lymph Glands | Organs in the body that produce lymph or interstitial fluid which is clear and assists in the bodies defence system |
Magnification | To increase the size of somethig |
Mangroves | Vegetation found in estuarine areas |
Metabolism | Describes the chemical reactions occurring within an organism. |
Monosaccharide | A molecule with a single unit of sugar |
Multicellular | Organisms composed of more than one cell |
Nectar | A sugar secretion of a plant that attracts birds and insects |
Organelle | Any part of a cell that has a specific functional role |
Organism | Any living plant or animal |
Orifice | A tube like opening |
Oxidation reaction | A chemical reaction in which the proportion of oxygen in the molecules is incrased |
Plasma membrane | Also called cell membrane, the outer boundary of a cell |
Polysaccharides | A molecule with multiple of sugar |
Precipitate | A solid formed from the reaction of two liquid substances |
Prion | An infectious particles composed of protein, containing no genetic material |
Radioisotope | Natural or artificial isotope exhibiting radioactivity, used as a source for medical or industrial purposes |
Resolution | The ability of optical instruments to produce separate images of close objects |
Respiration | The process by which carbohydrates and oxygen are combined to release energy, carbon dioxide and water |
Desiccation | The drying out or removal of moisture |
Disaccharide | A molecule with double units of sugar |
Distended | Enlarged, stretched or swollen |
Enzyme | A highly specialised cellular protein that reduces the amount of energy required to initiate a chemical reaction, thereby increasing the speed of reaction |
Flaccid | Limp |
Guard Cells | Pair of specialised cells in a plant epidermis forming a pore or stomate |
Haemoglobin | A protein molecule found in red blood cells that transport oxygen |
Histologist | A person who studies detailed or microscopic tissue structure |
Hypertonic | Higher solute concentration than other fluid |
Hypotonic | Lower solute concentration than another fluid |
secrete | top produce and pass through a membrane out of a cell |
stomata | a pore through which gas exchange takes place, usually located on a leaf |
translucent | diffuse transmission of light through a surface that is not smooth |
tripe | lining of a ruminant stomach |
turgid | describes the swollen or distended state of a cell |
unicellular | describes organisms composed of only one cell |
vesicles | a small sac like structure |
villi | finger like growth on the inside wall or lining of the small intestine |
viscosity | the tendency of a material to resist movement through it. |