Which one of the following statements about the cell cycle is correct?
a. dna is replicated during m-phase.
b. cell growth occurs during g1 and g2, but not s-phase.
c. most cells in the human body are in g0. both g2 and m-phase are 4n in e. coli.
d. g1 is easily distinguished from g2 in the microscope.

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a. one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b. one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c. one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.