Question

when a protein denatures, it...
obtains the shape it needs to function properly.
has completed the process of protein synthesis.
loses its shape and can no longer function properly.
has begun the process of protein synthesis.

Explanation:

Protein denaturation is a process where a protein loses its native (natural) structure. Proteins have specific three - dimensional shapes that are crucial for their function. When denatured (due to factors like heat, pH changes, etc.), the protein's shape is disrupted. This disruption means the protein can no longer perform its normal biological function.

• The first option is incorrect because denaturation is the opposite of obtaining the correct functional shape.
• The second and fourth options are about protein synthesis (the process of making proteins), which is not related to denaturation. Denaturation is about the breakdown of an already - formed protein's structure.

Answer:

loses its shape and can no longer function properly.