BIO 168: Biochemistry - Chapter 2, Part 1

What is the primary role of electrons in chemistry?

• They determine the taste of substances.

• They make substances magnetic.

• They drive chemical reactions.

• They determine the color of substances.

Which element is known as the backbone of most molecules in living organisms?

• Hydrogen

• Nitrogen

• Oxygen

• Carbon

What is the term for the electrons involved in bonding?

• Bonding electrons

• Core electrons

• Free electrons

• Valence electrons

Which type of bond involves the sharing of electrons?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

What type of chemical reaction involves two compounds exchanging partners?

• Decomposition

• Synthesis

• Single replacement

• Double replacement