1. Which organelle produces energy for the cell?
   
   -- choose the best answer -- cell membrane mitochondria nucleus ribosome cytoplasm ER
   
   
2. Which organelle controls what enters and leaves the cell?
   
   -- choose the best answer -- mitochondria cytoplasm nucleus ribosome cell membrane ER
   
   
3. The protein factories of the cell.
   
   -- choose the best answer -- mitochondria cell membrane nucleus ER cytoplasm ribosome
   
   
4. The "highway" of the cell.
   
   -- choose the best answer -- mitochondria cell membrane ER ribosome cytoplasm nucleus
   
   
5. Which organelle is a semipermeable structure?
   
   -- choose the best answer -- cell membrane mitochondria nucleus ribosome cytoplasm ER>
   
   

 

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