Eukaryotic cells have membrane-bound organelles that result in the formation of compartment-like structure.
this is useful for cell because it
a. enable particular molecules to selectively enter and exit the cell.
b. maintains the total isolation of the nucleus from cytosol.
c. provides a structural network that act to support the cell.
d. creates a variety of intercellular environments.

What are genotypes? what are phenotypes?

What are the characteristics of living things

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.