Cells
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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| active transport | the process by which cells use energy to transport molecules through the cell membrane from areas of low concentration to areas of high concentration
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| amino acids | any one of several building blocks of protein
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| cell | the basic unit of structure and function that makes up all organisms
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| cell membrane | the thin boundary between the cell and its environment
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| cell respiration | the process in which nutrients are broken apart, releasing the chemical energy stored in them
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| chloroplast | the green organelle that contains chlorophyll; where photosynthesis takes place
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| circulation | the flow of materials within a cell as well as between parts of a multicellular organism
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| cytoplasm | the jellylike substance that is between the cell membrane and the nucleus and that contains specialized structures
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| diffusion | the movement of molecules from areas of high concentration to areas of low concentration
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| digestion | the process that breaks down large food molecules into simpler molecules that the organism can use
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| enzymes | proteins that speed up the rate of chemical reactions in living things
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| excretion | the removal of all the wastes produced by the cells of the body
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| homeostasis | the ability of an organism to maintain a stable internal environment even when the external environment changes
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| hormone | a chemical produced in the endocrine glands
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| immunity | the body's ability to destroy pathogens before they cause disease
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| inorganic | a type of molecule that does not contain both carbon and hydrogen but can contain any other combination of elements
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| metabolism | all the chemical reactions that occur within the cells of an organism
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| mitochondria | pod-shaped organelles that contain enzymes used to extract energy from nutrients
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| nucleus | a large structure within a cell that controls the cell's metabolism and stores genetic information, including chromosomes and DNA
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| organ | a body structure made of different kinds of tissues combined to perform a specific function
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| organ system | several organs that work together to perform a major function in the body
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| organelle | a structure within the cell that carries out a specific function
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| organic | term used to describe molecules that contain both hydrogen and carbon
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| receptor molecule | certain protein molecules in the cell membrane that can receive chemical messages from other cells
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| reproduction | the process by which organisms produce new organisms of the same type
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| respiration | the process by which the chemical bond energy stored in nutrients is released for use in cells
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| ribosome | one of the tiny structures in the cell that is the site of protein production
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| simple sugars | the result of the digestion of starches. Example: glucose
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| synthesis | a life process that involves combining simple substances into more complex substances
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| tissue | a group of specialized cells that perform a specific function
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| vacuole | storage sacs within the cytoplasm of a cell that may contain either wastes or useful materials, such as water or food
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Created by:
WGZimm
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