The phloem tissues in plants are responsible for the movement of sugars from the leaves to different areas of the plant. This allow all of the plant to have the necessary energy to carry out its cellular activities. Phloem is just one part of the plant's vascular system, which is a larger organ system that moves materials through out the plant. What animal organ system is most similar to the vascular system of a plant?

What came first egg or chicken? and is tomato a vegetable or a fruit?

The first signs of cellular differentiation occur in the blastocyst. why is cellular differentiation important for the development of a fully formed human infant?

The dna in a cell’s nucleus encodes proteins that are eventually targeted to every membrane and compartment in the cell, as well as proteins that are targeted for secretion from the cell. for example, consider these two proteins: phosphofructokinase (pfk) is an enzyme that functions in the cytoplasm during glycolysis. insulin, a protein that regulates blood sugar levels, is secreted from specialized pancreatic cells. assume that you can track the cellular locations of these two proteins from the time that translation is complete until the proteins reach their final destinations.for each protein, identify its targeting pathway: the sequence of cellular locations in which the protein is found from when translation is complete until it reaches its final (functional) destination. (note that if an organelle is listed in a pathway, the location implied is inside the organelle, not in the membrane that surrounds the organelle.)