Answer:
Chemical bonds hold molecules together and create temporary connections that are essential to life.
Explanation:
Both strong and weak bonds play key roles in the chemistry of our cells and bodies. For instance, strong covalent bonds hold together the chemical building blocks that make up a strand of DNA. However, weaker hydrogen bonds hold together the two strands of the DNA double helix. These weak bonds keep the DNA stable, but also allow it to be opened up for copying and use by the cell.
More generally, bonds between ions, water molecules, and polar molecules are constantly forming and breaking in the watery environment of a cell. In this setting, molecules of different types can and will interact with each other via weak, charge-based attractions. For instance, a Na^+
+
start superscript, plus, end superscript ion might interact with a water molecule in one moment, and with the negatively charged part of a protein in the next moment.
