How many copies of dna are required to see bands on the electrophoresis gel

What is unique about the members of the group of fungi to which penicillium notatum belongs? they are not important for medicine. they are not made up of hyphae. they are used in fermentation. they lost the reproductive phase.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

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