Question

in the human body, oxygen is absorbed by the lungs and nutrients are absorbed by the small intestine. In a single-celled organism, this absorbtion directly involves the

Answer 1

When we consider a single cell organism like Amoeba...

We see that the Amoeba forms the Pseodopodia around the food particle..

Then cytoplasm releases the enzymes to digest the food particle and the digested food is absorbed by the Cytoplasm.

Hence food gets absorbed in Cytoplasm.