Why are controls needed in scientific studies?  

The original cell theory includes:                     

Contrast cilia and flagellae. 

Phosphate groups are important components of which macromolecules?                     

Which are correctly matched?                    

Which of the options below is correctly matched?                  

An amoeba goes swimming. Which statement below is true?

Compare cilia and flagella. 

Why do we digest macromolecules instead of using them whole?                   

Tiny tunnels connecting the cytoplasm of neighboring plant cells are called __________ .