A cellular pathway is a series of actions among molecules in a cell that leads to a certain product or a change in the cell. It can trigger the construction of new molecules, such as a fat or protein, turn genes on and off, or cause a cell to move. More
From top to bottom: ecosystems organisms organs tissues cells organelles molecules atoms More
Understanding biology is one of reverse engineering. You have a complex system and you need to understand how it works. It’s like having a laptop and trying to figure out how it works. You press the keyboard and different key combinations to see what it does. More
Must watch clip of Neil deGrasse Tyson on the possibilities of alien intelligence. See the video then consider the 1% difference in DNA he talks about between us and an alien life form being 40%, 50%, or 60%. Mind-boggling!
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