Define the following terms: i) Assimilation. ii) Peristalsis. (b) Describe how proteins are digested as they move through the alimentary canal of a human being. (c) Explain THREE structural adaptations of the ileum for the absorption of digested food.

I can help with question 1(a) from the image.

a) Define the following terms:

i) Assimilation

ii) Peristalsis

i) Assimilation:
Assimilation is the process by which absorbed nutrients are transported to the cells and converted into new protoplasm or used to provide energy. It's the final stage of nutrition where digested food molecules are incorporated into the body's cells.

ii) Peristalsis:
Peristalsis is the rhythmic, wave-like contraction and relaxation of the smooth muscles in the walls of tubular organs, such as the esophagus and intestines. This muscular action propels food or other contents along the digestive tract.