Philosophy is the study of the basic or underlying nature of knowledge, reality, and existence.
Answer:
Large molecules such as hormones
Explanation:
The other options either have channels within the membrane to move through (water has aquaporins, ions like potassium have their own channels) or can diffuse directly through the membrane (CO2). Protein hormones cannot move through the plasma membrane, nor can they diffuse through it. Hope this helps!
Three main functions are protection regulation and sensation. Protection is primary I️ believe.
