• Why do cell membranes contain other structures other than phospholipids?

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

What type of cell is produced after fertilization occurs and the gametes combines ?

The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.