It is known as the sarcoplasmic reticulum. It is a particular sort of smooth ER that controls the calcium particle fixation in the cytoplasm of striated muscle cells. 
The unique kind of smooth endoplasmic reticulum found in smooth and striated muscle filaments whose capacity is to store and discharge calcium particles. The sarcoplasmic reticulum discharges calcium particles amid muscle constriction and retains them amid unwinding.
        
             
        
        
        
Answer: have employed violence and terrorism.
- In the case of Kurdistan, most violence has come from the Kurdistan Worker's Party, a militant organization based in Turkey and Iraq. The Party has been in an armed conflict with Turkey since 1984. It is listed as a terrorist organization by NATO, the U.S., The U.K., Japan and the E.U., among others.
 - In Northern Ireland, the movement has been led by the Irish Republican Army (IRA). The IRA has been active for most of the 20th and 21st centuries, and it was dedicated to achieving Irish independence initially,  and Irish unification afterwards. The organization has been split many times over the years, and has used violence and terrorism several times over its existence.
 
 
        
                    
             
        
        
        
Jeff's ideas are because of his Percival bias.
Explanation:
Jeff has a predisposition bias against vegans because he associates them with a certain ind of habits that is the tree hugging and many such movements that he obviously has  a negative view about. 
Thus, even when a person is vegan because they have no other choice but to be one they are still laying the same negative stereotypes on them. 
This is the predisposed bias that he transfers onto another person who broadly fits that category in his head.
 
        
             
        
        
        
Answer:
The best course of action is to modify the elements of the research that were not approved by the IRB, even if this implies the removal of the subject who will be admitted to prison, or to talk to the penitentiary authorities if something can be done for the subject to participate in the research. and then report to the IRB.
Explanation:
All research carried out must be within the guidelines that the IRB proposes. For this reason, if a research is disapproved by the IRB, it must have factors modified and adapted so that it can be approved and carried out, even if this excludes the possibility of participation of volunteers who were interested in research and cannot due to some situation such as prisons, illnesses, among others.