The fossil of archaeopteryx dates back to the jurassic period. the animal had teeth and a skeleton resembling small dinosaurs, but wings and feathers resembling birds. how does this fossil provide support to the theory of evolution through natural selection? a. the fossil suggests that modern day birds are the only surviving dinosaurs since they possess both teeth and wings. b. the fossil suggests that dinosaurs slowly evolved from birds as traits such as teeth were selected by the environment. c. the fossil suggests that birds and dinosaurs evolved simultaneously as traits such as wings and teeth were selected by the environment. d. the fossil suggests that birds slowly evolved from dinosaurs as traits such as wings and feathers were selected by the environment.

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.)

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.

The picture shows a location in india that is very dry and arid. notice the tall mountains in the background; you can find high amounts of vegetation on the other side of the mountains. which statement is most likely true for this area?