50% punnet square would make AA AB Aa and A Ab
Answer:
The correct answer will be option-D.
Explanation:
Calcium plays an important role in muscle contraction as they are released from the sarcoplasmic reticulum after they receive electric impulse.
Calcium triggers the muscle contraction cycle as these calcium ions bind to the troponin-tropomyosin complex. This binding exposes the myosin-binding site on the actin on which high energy myosin binds and cross-bridge is formed.
This cross-bridge formation causes the contraction of the sarcomere and therefore muscle contracts.
Thus, option-D is the correct answer.
B. Cell membrane
Remember cell membrane is the structure aka “wall of the house” is the clear boundary between the cells internal and external environments:))
Hope this helps
Answer:
As a cell grows, its surface area-to-volume ratio decreases
Two types of crust, the <span>thin oceanic crust that underlies the ocean basins, and the</span> continental crust that underlies the continents, which is thicker than the thin oceanic crust.
Hope this helps!
Thanks,
<span /> - xxred24
