What resulted from the changes and shapes of segments of leeches?

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.

Select the word from the list that best fits the definition a system made of 25 satellites

Omg substrates with the same size and shape as the active site will bind to the enzyme. why is the key labeled the “bad” substrate?