Under what conditions can aerobic respiration be used as a means to generate the ATP needed to carry out cellular processes? A) Oxygen is absent; electron transport chain is not used.
B) Oxygen is absent; electron transport chain is used.
C) Oxygen is present; electron transport chain is not used.
D) Oxygen is present; election transport chain is used.

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.

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin