Answer:
The best answer to fill in the blank in the question: Active transport is the protein-mediated movement of substances _____, would be: Against a concentration gradient.
Explanation:
In cellular activity there are several means by which a cell may either introduce, or expell, molecules, ions, gases, waste, or water to survive. While some of these elements may enter a cell´s intracellular environment, and leave it, relatively easily, some require the help of proteins present in a cell membrane in order to either enter or exit the cell. Ions, especially, given that they are vital to maintain the cell´s capability of reacting to different stimulus, have to be particularly balanced out and controlled. In order to do so, the cells membrane possesses a series of proteins inserted between the layers that work as both gated channels and also as transporters that will allow the ions to move as they are required by the cell. Active transport then is the active passage by these proteins on the cell´s membrane of ions against their concentration gradients.
Answer:
Explanation:
Throughout his life, books were vital to Thomas Jefferson's education and well-being. When his family home Shadwell burned in 1770 Jefferson most lamented the loss of his books. In the midst of the American Revolution and while United States minister to France in the 1780s, Jefferson acquired thousands of books for his library at Monticello. Jefferson's library went through several stages, but it was always critically important to him. Books provided the little traveled Jefferson with a broader knowledge of the contemporary and ancient worlds than most contemporaries of broader personal experience. By 1814 when the British burned the nation's Capitol and the Library of Congress, Jefferson had acquired the largest personal collection of books in the United States. Jefferson offered to sell his library to Congress as a replacement for the collection destroyed by the British during the War of 1812. Congress purchased Jefferson's library for $23,950 in 1815. A second fire on Christmas Eve of 1851, destroyed nearly two thirds of the 6,487 volumes Congress had purchased from Jefferson.
Through a generous grant from Jerry and Gene Jones, the Library of Congress is attempting to reassemble Jefferson's library as it was sold to Congress. Although the broad scope of Jefferson's library was a cause for criticism of the purchase, Jefferson extolled the virtue of its broad sweep and established the principle of acquisition for the Library of Congress: “there is in fact no subject to which a member of Congress may not have occasion to refer.” Proclaiming that “I cannot live without books,” Jefferson began a second collection of several thousand books, which was sold at auction in 1829 to help satisfy his creditors.
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The Israeli-Palestinan conflict affects the lives of young people in Jerusalem through the segregation of most activities in the cities including education, transportation, employment, and housing. Additionally there are periods of intensified violence that make life more difficult. The city is also a very religious city which has impacts on the conflict and also on the lives of young people everyday.
Answer:
gravitational force on it
Explanation:
Answer:
Belgium and Poland
Explanation:
The answer is Belgium and Poland
