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Ch 2 living things

Cell The smallest functional and structural unit of all living organisms usually consists of a nucleus,cytoplasm, and a membrane
Stimulus Anything that causes a reaction or change in an organism or any part of an organism
Homeostasis The maintenance of a constant internal state in a changing environment
Sexual reproduction Reproduction in which the sex cells from two parents unite producing offspring that share traits from both parents
Asexual reproduction Reproduction that does not involve the union of sex cells and in which on parent produces offspring identical to itself
Heredity The passing of genetic traits from parent to offspring
Metabolism The sum of all chemical processes that occur in an organism
Producer An organism that can make its own food by using energy from it surroundings
Consumer An organism that eats other organisms or organic matter
Decomposer An organism that gets energy by breaking down the remains of dead organisms or animal waste and consuming or absorbing the nutrients
Protein A molecule that is made up of amino acids and that is needed to build and repair body structures and to regulate process in the body
Carbohydrate A class of molecules that includes sugars,starches,and fiber contains carbon, hydrogen, and oxygen
Lipid A fat molecule or a molecule that has similar properties examples including oil‘s waxes and steroids
Phospholipid A lipid that contains phosphorus and that is structural component in cell membranes
ATP Adenosine TriPhosphate hey molecule for that acts as the main energy source for cell process
Nucleic acid A molecule made up of substance called nucleotides
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