Answer:
A
Explain
That is a millipedes only way of protecting its self
DNA<span> is a double stranded molecule. The nucleotides on each </span>strand<span> are held to the opposite </span>strand<span> with hydrogen bonds. So if on one </span>strand<span> you adenine the </span>complementary<span> nucleotide is thymine. For guanine the </span>complementary<span> nucleotide is cytosine.</span>
Because it absorbs 93-99% of the sums ultraviolet rays also, the ozone allowed life to leave the depths of the ocean and move onto land.
The endomembrane system<span> is a group of cell membranes and organelles that are mutually interconnected, either by being directly continuous with one another or by sending one another </span>vesicles<span>—little spheres of membrane then can bud off from one membrane and fuse with another.
</span>The rough endoplasmic reticulum<span> (</span>rough ER<span>) gets its name from the bumpy ribosomes attached to its cytoplasmic surface. As the ribosomes attached to the rough ER make proteins, they feed the newly forming protein chains into the lumen.
</span>
The smooth endoplasmic reticulum<span> (</span>smooth ER) does not have ribosomes on its cytoplasmic face.<span>The smooth ER has a variety of functions, and its exact role may vary between cell types.
</span>
<span>One role of the smooth ER is to produce lipids, including phospholipids, cholesterol, and steroids.
</span>