Answer:
C
Explanation:
The helix has to unwind before separating. Once it's separated, then new bases can be added. Once the bases are added, the separate strands wind into helices.
Explanation:
An autoimmune disorder occurs when the body sees it's own cells as foreign antigens and begins to attack them.
The treatment depends on the particular autoimmune disorder; however, the mainstay of treatment is the use of IMMUNOSUPPRESSIVE MEDICATION. Examples include corticosteroids (such as prednisone) and nonsteroid drugs such as azathioprine, cyclophosphamide, mycophenolate, sirolimus, or tacrolimus.
C. The Bering Land Bridge once connected what would be Russia and North America but the the movement of these continents separated the land bridge
Explanation:
Proglottids are segments in cestodes that contain bot the male and female reproductive organs. These segments go ahead to make eggs and then dettach form the worm. They are excreted and become agents of infection on the next hoist. Proglittids formed near the neck of the worm are immature while those at the tail end are literally bags of mature eggs.
The scolex is the head of the worm that is attached to the host. It is also the part that ‘sucks’ nutrients from the host. It has hooks that it uses to anchor itself in the host. In some species, rather than hooks, there are suction-cups that use suction for anchorage.
Learn More:
For more on cestodes check out;
brainly.com/question/14565928
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