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7th Gr Science Cells

Cell Theory, Levels of Organization, & Cell's Organelles & Functions

TermDefinition
Cells the basic units of life
All living things are made up of one or more cells
All cells come from other (preexisting ) living cells
Cell the basic unit of structure of all living things
Tissue groups of similar cells that work together to perform a task
Organ two or more tissues working together to perform a task
Organ System organs that work together to perform a task
Organism a living thing
Nucleus Often called the "brain" of the cell, directs cell activities and contains genetic material (DNA)
Mitochondria Often called the powerhouse of the cell, produces mechanical and thermal energy using chemical energy from nutrients transported inside the cell
Cytoplasm Is the gel-like substance in which all of the organelles are contained. It helps maintain structure inside the cell
Vacuole Used for storage in the cell. Usually contains water but can also store food or waste depending on the type of cell. Plant cells contain one large vacuole, while animal cells contain many small ones
Cell Membrane Provides a protective barrier. Allows certain substances to enter and leave the cell.
Cell Wall The outer most layer of the plant. It strengthens the outer structure and helps protect the cell. ***ONLY FOUND IN PLANT CELLS***
Chloroplast Contains chlorophyll, uses sunlight's radiant energy to help plants create food (chemical energy) during photosynthesis ***ONLY FOUND IN PLANT CELLS***
Egg with DNA on the inside Example for NUCLEUS
Battery Example for MITOCHONDRIA
Powerhouse Mitochondria
Ziploc Bag of gel with pictures of organelles in it Example for CYTOPLASM
Gel Like Substance Cytoplasm
Storage Vacuole
Protective Barrier Cell Membrane
Strainer Example for CELL MEMBRANE
Outer Most Layer Cell Wall
Plastic Cup Example for CELL WALL
Contains Chorophyll Chloroplast
Solar Cell on a Calculator Example for CHLOROPLAST
Created by: SHigh
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