Question

In addition to covalent bonds, which interactions are important in biological systems?

1) van der waals interactions
2) hydrogen bonds
3) ionic attractions
4) all of the above

Answer 1

Van der Waals interactions, hydrogen bonds, and ionic attractions are all important in biological systems besides covalent bonds.

Step-by-step explanation:

In addition to covalent bonds, van der Waals interactions, hydrogen bonds, and ionic attractions are important in biological systems. Van der Waals interactions occur between polar atoms in different molecules and are weak attractions. Hydrogen bonds provide critical properties to water and stabilize the structures of proteins and DNA. Ionic attractions involve the electrostatic attraction between positively and negatively charged ions.