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Unit 3 Met & Body Sy
Unit 3 Metabolism & Body Systems
| Term | Definition |
|---|---|
| cell | the smallest structural and functional unit of an organism. |
| metabolism | the body's use of molecules for energy and growth |
| molecule | a group of atoms joined together in a particular way |
| glucose | a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms |
| oxygen | a molecule that organisms get from the air or water around them and is used to release energy |
| amino acids | molecules that are the building blocks of proteins |
| carbon dioxide | a molecule made of 1 carbon and 2 oxygen atoms |
| system | a set of interacting parts forming a complex whole |
| circulatory system | Body system that transports molecules to and from all cells of the body |
| digestive system | Body system that takes in food and breaks it down |
| respiratory system | Body system that takes in oxygen and releases carbon dioxide |
| homeostasis | the process by which an organism or cell maintains a state of balance among its internal systems to survive and function properly. |
| starch | a type of energy storage molecule made of many glucose molecules connected together |
| protein | a category of large molecules that perform important functions inside living things; made up of amino acids |
| diagnosis | the identification of the nature of an illness or other problem by examination of the symptoms. |
| energy | the ability to make things move or change |
| chemical reaction | a process in which atoms rearrange to form new substances |
| cellular respiration | the chemical reaction between oxygen and glucose that releases energy into cells |
| blood doping | the injection of oxygenated blood into an athlete before an event in an attempt to enhance athletic performance. |
| excretory system | Body system that removes waste from the body and helps maintain homeostasis. |
| immune system | Body system that is made up of a complex network of cells, tissues, organs, and the substances they make that helps the body fight infections and other diseases. |
| skeletal system | Body system that is made up of the bones that give structure to the human body |
| nervous system | Body system that sends messages back and forth between the brain and the body. The brain is what controls all the body's functions. |
| muscular system | Body system that is made up of 3 different types of muscle to allow for movement and help move substances (food and blood) within the body |
| tissue | a group of similar cells that work together to perform a specific function |
| organ | a structure composed of a group of different tissues that work together to perform a specific function |
| integumentary system | A body system that is made up of the skin, hair, nails, and associated glands. It protects the body, regulates temperature, senses stimuli, and produces essential substances. |
| endocrine system | A body system made up of glands and organs that produce and secrete hormones to regulate the body's functions |
Created by:
RWare