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Green Cells Book

Lesson 2

TermDefinition
Cell membrane A cell structure that controls, which substances can enter or leave the cell
Nucleus A cell structure that contains nucleic acids, the chemical instructions that direct all the cell’s activity
Organelle A tiny cell structure that carries out a specific function within the cell
Ribosome A small grain-like structure in the cytoplasm of a cell where proteins are made
cytoplasm The region between the cell membrane and the nucleus; in organisms without a nucleus, the region located inside the cell membrane
Mitochondria Rod shaped cell structures that convert energy in food molecules to energy the cell can use to carry out its functions
Endoplasmic reticulum A cell structure that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another
Golgi apparatus A structure in a cell that receives proteins and other newly formed materials from the endoplasmic reticulum, packages them, and distributes them to other parts of the cell
vacuole A sac inside a cell that acts as a storage area
Lysosomes small round cell structures containing chemicals that break down large food particles into smaller ones
Multicellular Consisting of many cells
Unicellular Made of a single cell
Tissue A group of similar cells that perform a specific function
Organ a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.
Organ system a group of organs that work together to perform one or more functions for the body
specialized cells a cell that has developed a unique structure and function to perform a specific job within a multicellular organism.
Created by: user-1995236
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