Either adenine and guanine or thymine and cytosine. It is either because the first adenine pairs with thymine and guanine pairs with cytosine, So each rung will have one of the two pairs.
Answer:
B. phagocytes
Explanation:
Phagocytosis is a process wherein a cell binds to the item it wants to engulf on the cell surface and draws the item inward while engulfing around it. The process of phagocytosis often happens when the cell is trying to destroy something, like a virus or an infected cell, and is often used by immune system cells.
Answer:
The correct answer is - leverage.
Explanation:
Skeletal muscles involves leverage which is the ability to move an object with the help of the lever,. In human body leverage is work as the joints are fulcrums, and the bones act as levers.
Muscle contraction provides the effort that is applied at the point of the origin in the bone. Changing the magnitude and direction of forces created by the skeletal muscles is an representation of the skeletal function of leverage.
Thus, the correct answer is - leverage.