An organ is a structure composed of two to four types of tissues working to perform functions that are beyond the scope of an individual tissue type. A set of related organs working cooperatively toward the performance of even more complex functions constitutes an organ system.
The correct answer is A. The man who assassinated Kennedy.
Explanation
John F. Kennedy (1917-1963) was the president of the United States from 1961 to 1963 when he was killed in the city of Dallas in the state of Texas by Lee Harvey Oswald, who days later would also be killed by Jack Ruby in a confusing episode when he was being taken to an investigation before a judge. The reasons for Lee Harvey Oswald to assassinate the president are uncertain, but when he was killed a few days after the President's assassination there was no clarity about the fact beyond the insistent self-declaration as innocent of Harvey Oswald. So, the correct answer is A. The man who assassinated Kennedy.
<span>The E-site of a ribosome is the last spot in the ribosome where the tRNA binds to during protein synthesis. Because it is the last binding place before the tRNA exits the ribosome, it is called E-site. E stands for exit.
There are other two sites - the P-site and the A-site. All this are involved in protein synthesis.</span>
The Allied Victory and the Creation of the United Nations did not lead to a more peaceful world as President Roosevelt had hoped because the Soviet Union violates the Declaration of Liberated Europe. What happened is that <span>the United States and the Soviet Union became increasingly hostile toward each other which resulted in the Cold War. Hope this helps.</span>
