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Ch 1 Lessons 1, 4, 5

5th grade biology terms

Cell the smallest unit of living things that can carry out the basic processes of life
Nucleus the cell's control center
Cell Wall stiff outer layer outside the cell membrane; only in plant cells
Vacuole a membrane-covered structure used for storage
Cytoplasm gel-like liquid that all of the organelles "float" around in
Mitochondria oval, membrane covered organelle that supplies energy for the cell
Cell Membrane flexible wrapping that surrounds the cell
Organism a living thing
Organ System organs that work together to perform a certain function
Organ a group of tissues that work together to perform a specific function
Chloroplast a green structure where energy from sunlight is used to produce food for the plant; only in plant cells
Tissue similar cells working together at the same job or function
Digestive System a set of organs that break down food so it can be absorbed into the bloodstream
Respiratory System a system of organs that work together to provide oxygen and food to cells
Excretory System a body system that removes wastes from the body
Nervous System a body system that works with other body systems to help organisms respond to stimuli
Muscular System Body system that provides movement
Skeletal System is made of bones, tendons, and ligaments
Circulatory System consists of the heart and blood vessels - moves the blood around the body
Antibiotics Chemicals used to treat bacterial infections
Vaccine medicine made from dead or weakened pathogens
Pasteurization heating liquids to destroy bacteria without significantly altering the liquid
Created by: jackie_mulkey