Ascientist uses materials in her lab to cut a dna sample into fragments.
what process is the scientist using?
a. gel electrophoresis
b. use of restriction enzymes
c. polymerase chain reaction (pcr)
d. karyotyping

What problem would a person have if the nucleic acid in one of his or her cells were damaged?

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.