It was discovered by alexander fleming in the 1920's that penicillium notatum produced a substance, know as penicillin, which had antibiotic properties. many would consider this to be one of the greatest and most important medical discoveries of all time. penicillium notatum is what type of organism? a) bacteria b) fungi c) protist d) virus

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Why did mendel use pea plants in his experiments? a. they have no alleles. b. they are haploid organisms. c. they reproduce quickly. d. they are all male.

During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane