Answer:
It would be D. Mitotic spindles form
Protein
<span>Cell membranes contain membrane proteins that allows all the interaction that occurs within the cell. It makes the cell membrane selectively permeable because of its characteristics as being fluid or its fluidity which means to say that they can move freely within the lipid bilayer. The membrane proteins can also be stored in the lipid bilayer together with the enzymes. It cannot be denied that membrane proteins have a lot of functions based on its type. They can be integral proteins, peripheral proteins and lipid bound proteins.</span>
Answer
Enzymes are also sensitive to pH . Changing the pH of its surroundings will also change the shape of the active site of an enzyme.
Plant parts are flattened and at least some of the original plant material remains. Leaves are often preserved as compressions.
