"Animals kill each other all the time. It's natural. Why can't we?" To this, Pollan makes the following points: This is correct--and what is OK for nonhuman animals should be OK for human ones. What is natural is subjective. In our culture, it is considered natural and, so, can be defended. What's natural isn't always what's ethical. Anyway, we don't have to eat meat. Not all animals can actually eat other animals.

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.)

Why are current extinctions of concern to enviromentalists?

As kate is moving down the hill, what type of energy does she have? a. sound energy b. electrical energy c. light energy d. mechanical energy