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Unit 3 Cells

Terms related to cells and characteristics of living things

TermDefinition
Unicellular A living thing made of only one cell.
Multicellular A living thing made of many cells.
Organelle A tiny structure inside a cell that carries out a specific function.
Nucleus (cell) The control center of a cell; contains DNA; determines cell characteristics.
OrganicCompound A chemical compound that contains carbon atoms; may also contain hydrogen, oxygen, nitrogen.
Mitochondrion Organelles that release energy for use by the cell through the process of cellular respiration.
Ribosome An organelle made of RNA that puts together chains of amino acids to build proteins.
EndoplasmicReticulum A system of membranes near the nucleus that assists in the production and transport of proteins and lipids. Rough ER has ribosomes attached to the surface.
GolgiComplex An organelle that packages material to be transported out of the cell.
CellWall A rigid structure that surrounds the cell membrane of plant cells and prokaryotes to provide structure and support.
Vacuole A fluid filled sac inside cells used to store nutrients, water or waste. Plant cells have a large central vacuole full of water that provides support. Plants wilt when the central vacuole loses water (turgor pressure).
Chloroplast The organelle in plant cells where photosynthesis occurs. They contain the chemical chlorophyll that makes them appear green.
CellMembrane A protective barrier that surrounds the cell and controls which materials can enter and leave the cell.
Chromosome Threadlike structures inside the nucleus that are made of DNA. These structures contain the genetic instructions for an organisms traits.
Cytoplasm The gel-like liquid that fills a cell; 80% water.
Created by: johnsona
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