Answer:
Explanation:
Firstly; the missing figure is attached in the diagram below.
Ligand A and ligand B can cause identical cellular responses in a cell due to the fact that there are cross-linkages in the various enzymatic activities taking place in the receptor proteins located in the plasma membrane.
This implies that a particular compound in the cell signaling in eukayortes can be triggered by some mechanism. For example as we can see right in the diagram; The ligands can trigger the G-protein in the plasma membrane which result into increase in cAMP.
In addition to that; IP3/DAG pathway can signal and trigger the calcium influx moving into the cytoplasm from the endoplasmic reticulum
The answer is C)4 for the <span>maximum number of covalent bonds a carbon atom can form with other atoms.</span>
The characteristics of fruits
It contains a large seeds like avadoco or peach seed.
<h2>
Answer:</h2>
<u>A. The concentration of calcium in the myofibril must decrease.
</u>
<h2>
Explanation:</h2>
Each time we move a muscle, it requires the joined activity of trillions of myosin engines. Our muscle cells use calcium particles to facilitate this monstrous atomic exertion. At the point when a muscle cell is given the sign to contract from its related nerves, it discharges a surge of calcium particles from an uncommon intracellular holder, the sarcoplasmic reticulum that encompasses the groups of actin and myosin fibers.
The calcium particles quickly spread and tie to Tropomyosin on the actin fibers. They move shape somewhat and enable myosin to tie and start moving up the fiber. These trillions of myosin engines will keep climbing, getting the muscle, until the calcium is evacuated.
The calcium pump enables muscles to relax after this furious flood of calcium-instigated constriction. The siphon is found in the film of the sarcoplasmic reticulum.
