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Biology

TermDefinition
Biology The study of life
Organism A living thing;one of many different forms of life
Cycle A course or series of events or operations that repeats
Energy the ability to do work
Law of conservation energy energy cannot be created or destroyed
Cells The basic unit of life
evolutuon the changes in a population over time
species a group of organisms that can reproduce with each other
adaptation an adjustment to environmental conditions
ecosystems all the living and nonliving things found in a particular area
diffusion the movement of molecules from an area of high concentration to an area of low concentration
homeostasis the ability of organisms to maintain internal conditions
transport to move molecules from one side of a membrane to the other
osmosis the movement of water through a cell membrane
Prokaryote A cell with one outside membrane and no nucleus
Eukaryote A cell with several internal structures, including a nucleus
Binary Fission reproduction in which a bacterial cell divides into two cells that look the same as the original cell
Tissue A group of cells that are similar and work together
Epithelial Cell A skin cell
Nervous tissue nerves made form a collection of nerve cells
Organ A group of different tissues that work together to perform a specific function
Organ System A group of organs that work together to perform specific connected tasks
Circulatory System A collection of organs including the heart, which moves blood and gases throughout the body
bilayer two layers
cell membrane the membrane that surrounds a cell and separates it from its environment
cytoplasm the area inside a cell;contains organelles and cytosol
cytosol the third base of cytoplasm; contains molecules used and made by the cell
vas deferens The tubes that connect the testes to the urethra
Estrogen A female sex hormone
Fallopian Tube A tube through which eggs pass from an ovary to the uterus
Gonad An organ that makes gametes
Menstruation The process during which an unfertilized egg,blood and pieces of the lining of the uterus exit the female body
Oocyte An early egg cell that has not finished meiosis
Ovary The female organ that makes egg cells
Semen A mixture of fluid and sperm cells
Testosterone A male sex hormone
Urethra The tube that carries urine and semen out of the body
Uterus An organ in most female mammals that holds and protects an embryo
gestation time The period of development of a mammal from fertilization until birth
Fetus An embryo after 8 weeks of development in the uterus
placenta A tissue that provides the embryo with food and oxygen from its mother's body
Umbilical cord The cord that connects an embryo to the placenta
Ingestation The intake of food; the first stage of digestation
Pharynx The passage between the mouth and esophagus for air and food
Peristalsis The movement of digestive organs that pushes food through the digestive tract
Chyme The liquid food in the digestive tract that is partially digested
Bile A substance made in the liver that breaks down fats
Feces The solid waste material remaining in the large intestine after digestion
Capillary A blood vessel which oxygen and food molecules pass to body cells
Asthma A condition that narrows or blocks the airways and makes breathing difficult
Bronchitus An inflammation of the bronchial tubes
Epithelium A thin layer of cells forming a tissue that covers body surfaces and lines some organs
Created by: matthewfr
 

 



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