Final answer:
Larger molecules in macromolecules II are formed through dehydration synthesis (A), where monomers combine to form polymers and release water as a byproduct also known as condensation.
Step-by-step explanation:
When assembling macromolecules II, larger molecules are formed through dehydration synthesis. This is a process where monomers combine with each other using covalent bonds to form polymers, and in doing so, release water molecules as byproducts. This type of reaction is also known as condensation.
Dehydration synthesis means "to put together while losing water." For example, when two glucose molecules join to form maltose, a water molecule is released. Condensation reactions like this are critical in the formation of various macromolecules, including carbohydrates, proteins, and nucleic acids.
Figure 2.14 Dehydration Synthesis and Hydrolysis illustrates that in dehydration synthesis, monomers release one hydroxyl group and one hydrogen atom to form water. This contrasts with hydrolysis, where a water molecule is added to split a covalent bond between monomers. Thus, the correct option is A. Dehydration synthesis.