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Unit 5 science

TermDefinition
Levels of organization cell-tissue-organ-organ system- organism
Differences between unicellular and multicellular organisms unicellular is one and multicellular is two
Nucleus stores genetic material
Cell membrane controls movement of substances in and out of the cell
Cell wall provides structure and support
Chloroplasts perform photosynthesis
Mitochondrion produces energy for the cell
Cytoplasm gel-like material that holds organelles
Cell theory basics all living things are made of one or more cells
How cells specialize different shapes, different functions
Types of microscopes mentioned and their use light, electron, fluorescence
Evidence that something is living contains cells, can grow, respond to stimuli, reproduce
Diseases caused by organelle or cell-membrane problems cystic fibrosis affects cell membrane function
Nervous system coordination receptors → nerve signals → brain processing → muscle response
Examples of body systems that coordinate movement nervous, muscular, skeletal
Receptors and specific stimuli eyes → light, ears → sound, nose → smell, skin → temperature/touch
How the body responds to cold nervous system signals muscles to shiver
Cystic fibrosis involves problems moving salt/water across cell membranes, causing breathing issues.
Cell the smallest unit of life.
Tissue many similar cells working together.
Organ different tissues working together to do a job.
Organ system organs that work together to perform major functions (e.g., circulatory system).
Organism a complete living thing (an animal, plant, fungus, or single-celled microbe).
Unicellular made of one cell (ex: amoeba).
Multicellular made of many cells (ex: human).
Homeostasis keeping internal conditions stable (like body temperature).
Receptor a cell or structure that detects a specific stimulus (light, sound, smell, temperature).
Reflex a fast, automatic response (often via nerve pathways).
Created by: user-1970361
 

 



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