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Cell (Noun) 
The smallest unit of a living organism (PLANT 
OR ANIMAL). 
“I am made up of 
cells!”
Tissue (Noun) 
A group of cells that perform one function. 
“My cells form 
many tissues 
in my body!”
Prokaryotic Cell 
Single-celled organisms with no nucleus. They 
were the first life forms on Earth. 
“The bacteria in my ...
Eukaryotic Cell 
Plant and animal cells that have a nucleus, 
membrane, and organelles. 
“A tree and I are made 
of eukary...
Organelle (Noun) 
A structure inside a cell that performs one 
function. 
“A cell has many organelles 
working inside it.”
Nucleus (Noun) 
An organelle that controls cell’s activities. The 
“boss”… 
“The nucleus of a 
cell is like the 
brain in ...
Nucleolus (Noun) 
Produces and stores RNA of the cell inside the 
nucleus. 
“The nucleus has a 
nucleolus inside!”
Chromosome (Noun) 
Chromosomes are rod-shaped structures found in 
the nucleus and made up of DNA molecules. 
“Chromosomes...
DNA Molecules 
Genetic material that contain and store 
instructions for the cell’s activities. 
“DNA molecules are 
found...
RNA Molecules 
Genetic material that processes instructions of 
DNA molecules in the ribosomes. 
“RNA molecules make 
prot...
Ribosome (Noun) 
Ribosomes are organelles that make proteins using 
RNA molecules inside chromosomes. 
“Ribosomes make 
th...
Endoplasmic Reticulum 
An organelle that transports proteins inside the 
cell. 
“The 
endoplasmic 
reticulum 
moves protei...
Golgi Body 
An organelle that creates a layer around proteins 
before they leave the cell. 
“Proteins are 
protected by th...
Lysosome (Noun) 
Lysosomes are organelles that use enzymes to 
break down proteins. 
“Proteins inside a cell are 
broken d...
Vacuole (Noun) 
Vacuaoles are organelles where proteins are stored 
before they are broken down by lysosomes. 
“Proteins a...
Mitochondrion 
(Noun) 
Mitochondria are organelles that make energy for 
the cell from food. 
“The 
mitochondria 
are like...
Cytoplasm (Noun) 
A jelly-like fluid that surrounds the nucleus where 
all the cell’s activities take place. 
“Organelles ...
Cell Membrane 
The outer covering of a cell that decides what goes 
in and out. 
“Proteins enter and leave a 
cell through...
Cell Wall 
A hard structure found only in plant cells that give 
them their shape. 
“Plants are hard 
because their cells ...
Chloroplast (Noun) 
Chloroplasts are organelles found only in plants 
that contain chlorophyll. 
“Plants are green 
becaus...
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Cellular Structures Vocabulary Cards

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Science Vocabulary Cards - Cellular Structures

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Cellular Structures Vocabulary Cards

  1. 1. Cell (Noun) The smallest unit of a living organism (PLANT OR ANIMAL). “I am made up of cells!”
  2. 2. Tissue (Noun) A group of cells that perform one function. “My cells form many tissues in my body!”
  3. 3. Prokaryotic Cell Single-celled organisms with no nucleus. They were the first life forms on Earth. “The bacteria in my body are prokaryotic cells!”
  4. 4. Eukaryotic Cell Plant and animal cells that have a nucleus, membrane, and organelles. “A tree and I are made of eukaryotic cells! ”
  5. 5. Organelle (Noun) A structure inside a cell that performs one function. “A cell has many organelles working inside it.”
  6. 6. Nucleus (Noun) An organelle that controls cell’s activities. The “boss”… “The nucleus of a cell is like the brain in my body!”
  7. 7. Nucleolus (Noun) Produces and stores RNA of the cell inside the nucleus. “The nucleus has a nucleolus inside!”
  8. 8. Chromosome (Noun) Chromosomes are rod-shaped structures found in the nucleus and made up of DNA molecules. “Chromosomes can be found in the nucleus of a cell.”
  9. 9. DNA Molecules Genetic material that contain and store instructions for the cell’s activities. “DNA molecules are found in the cell’s chromosomes.”
  10. 10. RNA Molecules Genetic material that processes instructions of DNA molecules in the ribosomes. “RNA molecules make proteins in ribosomes using DNA molecules.”
  11. 11. Ribosome (Noun) Ribosomes are organelles that make proteins using RNA molecules inside chromosomes. “Ribosomes make the cell’s proteins.”
  12. 12. Endoplasmic Reticulum An organelle that transports proteins inside the cell. “The endoplasmic reticulum moves proteins inside a cell.”
  13. 13. Golgi Body An organelle that creates a layer around proteins before they leave the cell. “Proteins are protected by the golgi body before they exit a cell.”
  14. 14. Lysosome (Noun) Lysosomes are organelles that use enzymes to break down proteins. “Proteins inside a cell are broken down by lysosomes.”
  15. 15. Vacuole (Noun) Vacuaoles are organelles where proteins are stored before they are broken down by lysosomes. “Proteins are kept in vacuoles before they are used by lysosomes.”
  16. 16. Mitochondrion (Noun) Mitochondria are organelles that make energy for the cell from food. “The mitochondria are like a cell’s factories.”
  17. 17. Cytoplasm (Noun) A jelly-like fluid that surrounds the nucleus where all the cell’s activities take place. “Organelles are found in the cell’s cytoplasm.”
  18. 18. Cell Membrane The outer covering of a cell that decides what goes in and out. “Proteins enter and leave a cell through the cell membrane.”
  19. 19. Cell Wall A hard structure found only in plant cells that give them their shape. “Plants are hard because their cells have cell walls.”
  20. 20. Chloroplast (Noun) Chloroplasts are organelles found only in plants that contain chlorophyll. “Plants are green because their cells have chloroplasts.”

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