Final answer:
Residual bodies from autophagy are degraded within lysosomes, which contain enzymes specialized for breaking down cellular materials.
Step-by-step explanation:
The residual bodies produced by autophagy are degraded in the lysosome. Lysosomes contain enzymes that break down and digest unneeded cellular components, such as damaged organelles. Autophagy is a cellular 'self-eating' process where autophagosomes capture the cellular debris and merge with lysosomes to degrade the materials. Importantly, they do not release materials extracellularly, send them to the nucleus, or export them to the Golgi apparatus.