The U.S. Bureau<span> of Refugees, </span>Freedmen<span> and Abandoned Lands, popularly known as the </span>Freedmen's Bureau<span>, was established in 1865 by Congress to help former black slaves and poor whites in the South in the aftermath of the U.S. Civil War (1861-65).</span>
Probably because they do not have factories or refineries needed to process the raw materials.
Answer:
The DNA must be able to separate its two strands in order to be connected to the sliding clamp.
For this to occur, the action of the protein components: helicase and topoisomerase is necessary.
Explanation:
The sliding clamp is a protein that participates in DNA replication. This protein is responsible for forming a "ring" around the single strand of DNA, allowing the polymer DNA (DNA replicating enzyme) to be firmly suited to the strand and to be able to create the new DNA strands. The sliding clamp is also responsible for the DNA polymerase decoupling from the DNA at the end of replication.
For the sliding clamp to work correctly, it is necessary for the DNA to unravel and release its two strands. This process needs the help of the Helicase enzymes, which are responsible for breaking the hydrogen bonds that hold the two DNA strands together, and, for topoisomerase, which is the enzyme that prevents single strands of DNA from creating torsions in their extension.
<span>Sadie lacks object permanence. Object permanence means that objects still exist even when they cannot be viewed. It not unusual for Sadie to lack object permanence because it is not something infants possess. Infants gained the ability as they grow older through touching objects and holding the objects they think stopped existing.</span>
