The answer would be letter B.
The answer is C- facilitated diffusion.it is a type of passive transport. In facilitated diffusion particles move from higher concentration to lower concentration. So particles move along their concentration gradients , so energy is not required.
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.
it wasn't just the earthquake that did damage. the magnitude of the quake caused a tsunami to form which hit shore and caused the more catastrophic damage.
