[lilsizzly]

Hey guys. I have this multiple choice question. Here it goes:

The stability of the 3 dimensional shape of many large molecules is dependent on:
a. covalent bonds
b. ionic bonds
c. hydrogen bonds
d. van der Waals attractions

I just started chemistry and am not sure of the answer.

[Michaelmoo]

I assume since they're talking about shape of large molecules, they're referring to proteins.

In that case, the 3D shape refers to tertiary structures. Hydrogen bonds (specifically disulfide bridges) are key to maintaining the 3D structure of proteins. (google search tertiary structure)