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Biology

QuestionAnswer
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 of Energy energy cannot be created or destroyed
Cell the basic unit of life
Evolution the change in a population overtime
Species a group of organisms that can reproduce with each other
Adaptation an adjustment to environmental condition
Ecosystems all of the living and nonliving things found in any particular areas
Homeostasis the ability of organisms to maintain their internal conditions
diffusion the movement of molecules from an area if high concentration to an area of low concentration
transpot 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 outide membrane and no nucleus
Eukaryote a cell with several internal structures, including a nucleus
Binary fission reproduction in which a bacteria divides into to two cell that look up same as the region cell.
Tissue A group of cells that are similar and work together
Epithelial cell A skin cell
Nervous tissue Nerves made from collections of nerve cells
Organ A group of different tissues that work together to performs specific fuctions
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
Bilary two layers
Cytoplasm the area inside a cell that contains organelles cytosol
cytosol The fluid base of the cytoplasm contains molecules used and made by the cell.
Passive Transport the movement of molecules across a membrane when the movement requires no energy
Active Transport the movement of molecules across a membrane when the movement requires energy
Cell Membrane A very thin membrane that surrounds the cytoplassm of a cell
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 durning 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
Vas deferens The tubes that connect the tests to the urethra
Gestation Time The period of development of a mammal, from fertilization until birth.
Placenta A tissue that provides the embryo with food and oxygen from its mother's food.
Umbilical cord The cord that connects an embryo to the placenta.
Fetus An embryo after eight weeks of development in the uterus.
Ingestion The intake of food, the first stage of digestion
Pharynx The passageway between the mouth and the 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 mad in the liver that breaks down fats
Feces The solid waste material remaining in the large intestine after digestion
Capillary A blood vessel through which oxygen and food molecules pass to body cells
Asthma A condition that narrows or blocks the airways and makes breathing diffcult
Bronchitis An inflammation of the bronchial tubes
Epithelium A thin layer of cells forming a tissue that covers body surface and lines some organs
Created by: emdog