One of the most important processes that take place in cells is the diffusion of molecules. This process is necessary for many cellular functions, such as metabolism and chemical reactions. However, there are some molecules that require more than just passive diffusion to enter a cell; they need special mechanisms for this purpose. Steroid hormones like testosterone are one type of molecule that needs specialized transport mechanisms because they cannot pass through the plasma membrane by themselves.
In order to understand how these types of molecules can diffuse into cells, we must first understand their structure and what makes them different from other types of molecules so we can then determine which mechanism would be best suited for them to use.
What makes steroid molecules different from other types of molecule?
Steroid hormones like testosterone are lipid-soluble and made up primarily of carbon, hydrogen, and oxygen. This means that they cannot pass through the plasma membrane by themselves because their structure is too large to diffuse passively into cells; instead it needs a specialized transport mechanism in order for them to enter cells. They also react easily with cholesterol found on the surface of cell membranes. The reaction between these two substances creates pores which allow the hormone to diffuse into the cell across this permeable area. Finally, when inside a cell or vesicle, there must be an enzyme present that removes certain parts from polysaccharides so that the chemical can interact with various enzymes within