Answer:
Structures that are present in plant cells and animal cells are membrane-bound organelles. For example, nucleus, mitochondria, and/or chloroplasts are not present in bacteria.
Explanation:
This is because bacteria are prokaryotic cells while plants and animals are eukaryotic cells. 
Prokaryotic cells lack membrane-bound organelles like eukaryotic cells. Prokaryotic cells do not have a nucleus or organelles like mitochondria and chloroplasts.
 
        
             
        
        
        
Animal and Plant Health Inspection Service (APHIS)
        
             
        
        
        
The independent variable is a variable that can be stood alone. So therefore, the independent variable would be how long it takes to parachute.