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Science Explosion v4, chapter 4

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
algae   plantlike organisms in Kingdom Protista; usually can perform photosynthesis and are not mobile  
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bacteria   smallest living thing known to man, unicellular, live in colonies  
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cell   tiny unit of living material surrounded by a thin membrane  
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cell division   process where a cell divides into 2 cells  
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cell membrane   a cell’s external boundary for the material inside the cell  
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cell theory   theory that all living things are made of cells  
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cell wall   a rigid structure that provides support for some kinds of cells  
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chlorophyll   a green pigment that absorbs energy from sunlight and uses it to produce food and energy for the plant  
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chloroplast   organelles that contain chlorophyll; organelles in which photosynthesis takes place  
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colony   group of bacteria  
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cytoplasm   a jellylike substance made mostly of water and containing many substances, such as proteins and fats, that are essential to the cell  
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energy   ability to do work  
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life cycle   The cycle that organisms go through of birth, growing to an adult, producing babies, growing old, and then it dies  
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life span   process of birth, growth, reproduction and death  
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meiosis   process where chromosomes duplicate once and cells divide twice  
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microscope   uses lenses to magnify objects  
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mitosis   division process where 2 new cells are created which are identical to the parent cell  
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mitochondria   the cell’s engine; responsible for breaking down the cell’s food and releasing energy  
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nucleus   a large organelle that contains the chromosomes  
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organelles   a tiny structure inside the cytoplasm of most cells that helps carry out the function of the cell  
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organism   a complete living thing  
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photosynthesis   process used by plants to convert sunlight (energy) to a usable source of energy (sugar)  
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protozoan   the more animal-like organisms in the kingdom Protista; able to move around and often live in water  
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vacuole   Bubble-like organelles in the cytoplasm of plant, animal, and human cells.  
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Created by: marchscience
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