Question

which statement best explains why carbon is central to macromolecules? it dissolves in seawater to make macromolecules it cannot bond with many elements it forms stable bonds and creates complex structures like carbohydrates and proteins it only forms gases

Explanation:

Carbon is central to macromolecules because it can form stable covalent bonds (due to its four valence electrons) and create complex structures. Macromolecules like carbohydrates, proteins, nucleic acids, and lipids all have carbon - based backbones.

• The first option is incorrect because macromolecules are not formed by dissolving in seawater.
• The second option is wrong as carbon can bond with many elements (e.g., hydrogen, oxygen, nitrogen).
• The fourth option is incorrect because carbon is a key element in solids (like diamond, which is a form of carbon) and in many organic compounds (not just gases).

Answer:

It forms stable bonds and creates complex structures like carbohydrates and proteins.