Which is the role of restriction enzymes? to isolate the selected gene
to cut DNA into fragments of different lengths
to move and separate the strands of DNA
to join the sticky ends of DNA fragments

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

b ti isnfornopgnoernfrof

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

i think its white blood cells

i hope this