How do stem cells know what type of cells to differentiate into? A. The nucleus has instructions to turn some genes on and some genes off
B. Genes turn on and off randomly
C. Signals from chemicals in the organism or from the environment determine which genes will be turned on and off
D. The cell has unique DNA that determines what the cell will become.

not sure if this is what you'r looking for eubacteria and archaebacteria

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

i hope this you

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )