Energy is released to be used by a cell when a phosphate group is a. removed from adp to form atp b. added to adp to form atp c. removed from atp to form adp d. added to atp to form adp

Although there are a limited number of amino acids many different types of proteins exist because..

Chalk is an ionic compound. which is a property of all ionic compounds that makes chalkboard? particularly useful for writing on a a high melting point hardness and brittleness inability to dissolve in water a multicolored appearance

Which two factors contributed to creating a global culture? the creation of the united nations improvement in telecommunications health issues such as the ebola virus increased opportunities for global travel