The building blocks of proteins are amino acids, which are small organic molecules that consist of an alpha (central) carbon atom linked to an amino group, a carboxyl group, a hydrogen atom, and a ...

A mortgage is a loan used to purchase or maintain real estate, including houses and commercial properties. A buyer repays the loan in monthly installments.

A business is an individual or group engaged in financial transactions. Read about types of businesses, how to start a business, and how to get a business loan.