Which reaction must occur in order to join monomers to make macromolecules?

Polysaccharides are made of long sugar units linked by:  

Which of the following categories contain cells with a nucleus.

A molecule that contains a sugar, phosphate and nitrogen base would be known as a 

Which of the following describes what polar means?

The smallest unit that is considered alive because it does all the characteristics of life is 

R groups participate in which level of protein structure?

The atomic number of an atom represents the number of

The lipid that forms the foundation of cell membrane is primarily composed of molecules called

Which characteristic of life involves balance?