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PCS Liv Env

Vocabulary for Topic 1 - Similarities/Differences Among Living Organisms

TermDefinition
Active Transport process by which cells use energy to transport molecules through the cell membrane from areas of low to high concentration; requires energy (ATP)
Amino Acids building blocks of protein
Cell basic unit of structure and function that makes up all organisms
Cell Membrane thin boundary between the cell and its environment
Cell Respiration process in which nutrients are broken apart; release chemical energy
Chloroplast green organelle that contains chlorophyll; photosynthesis takes place here
Circulation flow of materials within a cell and between parts of organisms
Cytoplasm jellylike substance that is between the cell membrane; contains specialized structures
Diffusion movement of molecule from area of high to low concentration
Digestion process that breaks down large food molecules into simpler molecules that organism can use
Enzymes proteins that speed up the rate of chemical reactions
Excretion the removal of all the wastes produced by the cell
Homeostasis maintain a stable internal environment
Hormone chemical produced by in the endocrine glands
Immunity body's ability to destroy pathogens before they cause disease
Inorganic does not contain both carbon and hydrogen
Metabolism all chemical reactions that occur within the cells of an organism
Mitochondria powerhouse for the cell; provides energy
Nucleus contains genetic information, including chromosomes and DNA
Organ body structure made of different kinds of tissues combined to perform a specific function
Organ System several organs that work together to perform a major function in the body
Organelle a structure within the cell that carries out a specific function
Organic contain both hydrogen and carbon
Receptor Molecule certain protein molecules in the cell membrane that can receive chemical messages from other cells; shape specific (match shapes)
Respiration process by which the chemical bond energy stored in nutrients is released for use in cells
Reproduction process by which organisms produce new organisms of same type
Ribosome make proteins
Simple Sugars result of digested starches
Synthesis life process that involves combining simple substances into more complex substances
Tissue a group of specialized cells that perform a specific function
Vacuole storage sacs of the cell
Created by: Ms.Sala