Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Maintaining a Balanc
Maintaining a Balance Terminology for revision
| Term | Definition |
|---|---|
| Distal tubule | part of the nephron where water is extracted |
| DNA | abbreviation for deoxyribonucleic acid; the molecule which makes up the genetic material of the chromosmes |
| Effector | Part of an organism which produces a response (e.g. heart, diaphragm). |
| Ectotherm | organism that changes its body temperature by using heat from the environment; plants and most animals except for mammals and birds are ectothermic |
| enantiostasis | the maintenance of metabolic and physiological functions in response to variations in the environment. |
| endocrine system | hormonal system that produces internal secretions which act upon organs |
| endotherm | animal that regulates its body temperature using heat generated by its metabolism; mainly birds and mammals are endothermic |
| enzyme | a highly specialised cellular protein that reduces the amount of energy required to initiate a chemical reaction, thereby increasing the speed of reactions; the names of enzymes often end in -ase (e.g. cellulase, which digests cellulose). |
| Eukaryotic | Cells which have their genetic material (chromosomes) inside a nucleus bounded by a membrane and which have other membrane-bound organelles; includes cells of protists, fungi, animals and plants. |
| Endocrine System | The system of glands that secrete hormones |
| Evaporative cooling | Removing heat from the body by changing liquid water to water vapour using heat from the skins surface (eg. sweating) or from respiratory surfaces (eg. panting). |
| Excretion | The elimination of harmful and unwanted products of metaoblism. |
| Excretory organs | Organs involved in the removal of wastes (kidneys, lungs, skin) |
| Gene | A unit of inheritance, usually part of a specific DNA molecule (chromosome) |
| Glomerulus | A bunch of capillaries found in the vertebrate kidney. |
| Activation Energy | The energy necessary to start a chemical reaction |
| Active Transport | Movement of substances across a membrane by a process requiring expenditure of energy |
| Ambient | Environmental or surrounding (eg.ambient temperature) |
| Ammonia | Main nitrogenous waste product of bony fish; excreted diluted in large amounts of water |
| Angiosperms | Flowering plants |
| Artery | Blood vessel which carries blood away from the heart |
| Bowman's Capsule | The capsule at the end of the vertebrate kidney which contains the glomerulus |
| Buffer | A solution of two or more chemicals which prevent marked changes in hydrogen ion concentration (pH) when either an acid or base (alkali) is added to the system |
| Cambium | Group of cells which divide to form new xylem and phloem cells |
| Capillary | Microscopic blood vessels with walls one cell thick, across which materials are exchanged between blood and tissues |
| Cell | Smallest unit of life capable of reproducing itself |
| Chromosome | Structure made up of genetic material (DNA) and protein found mainly in the nucleus |
| Cohesion | Attraction between molecules of water |
| Concentration | The amount of a substance in a specific amount of mixture or solution. Normally expressed as weight per unit volume (eg. 25 grams of salt per litre of water; 25g/L) or as molarity |
| Denatured | Structural change in proteins |
| Diffusion | Movement of particles in gases, liquids or solutions from where they are more concentrated to where they are less concentrated |
| Stomates (stomata) | Holes(pores) in the leaves of plants. These pores are controlled by two guard cells which regulate the loss of water from the leaves(transpiration) |
| Temperature Gradient | Difference in temperature. Heat energy flows from an area of higher temperature to one of lower temperature. |
| Thyroid Gland | Endocrine gland in the throat area which produces thyroid hormones. |
| Thyroid Hormones | Hormones involved with regulating the level of body metabolism |
| Thyroid Regulating Hormone | TSH; hormone released by the pituitary gland which controls the functioning of the thyroid gland |
| Tension | Part of the transpiration-tension-cohesion theory of water movement in xylem tubes; it refers to the 'pulling' of water molecules from the roots to the leaves by negative pressure |
| Tissue | A group of cells, usually of similar type, found in a multicellular organism having a specific |
Created by:
MCEBiology
Popular Biology sets