tegument
protective layer or cuticle that prevents the body fluids from breaking them down.
No part - if it can be digested then its not waste.
Cells use digested foods as a source of energy to power various cellular processes, such as growth, repair, and maintenance. Nutrients from digested foods are also used to build and repair cellular structures, enzymes, and hormones. Additionally, cells can store excess nutrients for later use.
The release of energy by combining oxygen with digested food is known as cellular respiration. During this process, glucose molecules from the digested food are broken down in the presence of oxygen to produce energy in the form of ATP (adenosine triphosphate) along with carbon dioxide and water as byproducts. This energy is essential for various cellular functions and activities.
Energy is released from digested food within the cells
I know that finklodiens can't be digested, due to there moist protective shell.
The digestive tract has a lining which produces mucous and this is protective. It prevents the body from digesting the tract. A person can get an ulcer, usually of the stomach. This what happens if the mucous coat is damaged.
When protein is pre-digested, it is broken down into individual amino acids or smaller peptide chains. This makes it easier for the body to absorb and utilize the protein for various cellular functions, such as muscle building and repair.
Metabolism- the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available.
A lysosome can fuse with various cellular components, such as endosomes, phagosomes, or autophagosomes, to either degrade their contents or to transfer materials for recycling. This fusion process allows lysosomes to participate in essential cellular functions, such as waste disposal, nutrient recycling, and pathogen destruction.
lysosomes
In a plant cell for example, the vacuole is a large inter cellular space where ingested materials are stored and digested. This organelle could be referred to as the stomach