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Unit 2 Living Things

TermDefinition
Organism Is any living thing
Characteristics of Living Things - All organisms are made up of cells. - All organisms contain the chemicals of life. - All organisms grow and develop. - All organisms respond to their surroundings. - All living things use energy. - All living things reproduce.
Unicellular Organisms that are made up of only one cell. Example: Bacteria
Multicellular Organisms that are made up of more than one cell. Example: Humans
Water The most common chemical in cells.
Carbohydrates They provide the cell with energy
Proteins They help build cells.
Nucleic Acids They provide chemical instructions for life processes.
Growth It means becoming larger.
Development It is change that leads to maturity.
Stimulus Any change or signal in the environment that can make an organism react.
Response An action or a change in behavior.
Spontaneous Generation The mistaken idea that living things could arise from nonliving sources.
Redi's Experiment Fracncesco Redi's experiment proved that maggots came from flies laying eggs on meat which dispproved spontaneous generation.
Pasteur's Experiment Louis Pasteur's experiment disapproved spontaneous generation by using flasks to growth bacteria.
Basic Needs of Living Things All living things must satisfy their basic needs for water, food, living space, and homeostasis.
Roles of Water in cells - Helping substances move within the cell. - Helping to transport dissolved food, waste, and other chemicals to and from cells. - Helping chemical reactions take place.
Producers/Autotrophs They use the sun's energy to make thier own food in the process of photosynthesis. Ex: Plants
Consumers/Heterotrophs They cannot make thier own food and must eat other organisms. Ex: Humans
Place to live It is where a organism can find food, water, and shelter.
Homeostasis The maintenance of stable internal conditions.
Created by: staylor19
 

 



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