Levels of Organization - Cells, Tissues, Organs and Organ Systems

Which is NOT an organelle 

• Nucleus 

• Ribosomes 

• Smooth muscle

• Mitochondria 

True or false: epithelial, muscle, and glandular are types of cells 

• True 

• False 

Which definition describes organs: 

• A group of different tissues that work together to perform a particular function. 

• A small structure in a cell that is surrounded by a membrane . 

• The smallest structure and functional unit of the organism.

Which of the following is NOT an example of a organ 

• Stomach 

• Pancreas 

• Mitochondria 

• Liver 

True or false: the organ system is larger than an organ 

• True 

• False 

Which of the following is NOT examples of organs 

• Skin

• Teeth 

• Spleen 

• Ribosomes 

• Lungs 

How many organ systems make up a human organism?

• 21

• 12

• 1