Analogous structures are structures that are similar in unrelated organisms. The structures are similar because they evolved to do the same job, not because they were inherited from a common ancestor. For example, the wings of bats and birds, shown in Figure below, look similar on the outside.
Answer:
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<span>The outside structure of the prokaryotic cell has a cell membrane, a cilia and a flagellum.
Cell membrane forms a protective barrier between the exterior environment and the interior of the cell.
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> </span></span>
The answer is; They stabilize protein structures and, in addition, the weak interactions allow for reversibility.
They allow protein to be easily folded and unfolded without expending too much energy. An example is their significance in maintaining the alpha helices and beta sheets of proteins, and allowing for DNA to be easily unzipped for biochemical processes such as replication or duplication.
