What are the similarities and differences between carrier proteins and channel proteins

What feature of cell theory is best demonstrated in the image

Select the correct answer from each drop-down menu proteins are

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass