Ascientist wants to perform a test that will indicate whether a nucleic acid sample is composed of rna or dna. testing for the presence of which of the following is most appropriate in this situation? a) phosphate
b) nitrogen
c) guanine
d) uracil
e) thymine

Because of its structure the cell membrane is known as a phospholipid ? a. bilayer b. molecule c. fluid d. barrier

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun