How many electrons need to flow through the electron transport chain of the light reactions to generate one molecule of ATP?

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots