Answer:
<u>a.the nuclear membrane</u>
Explanation:
During the late stage of prophase, the nucleolus becomes dispersed in the nucleus and the nuclear membrane breaks down and disappears. This allows the chromosomes to be suspended well in the cytoplasm and get attached to the spindle apparatus.
In telophase, anew nuclear membrane forms around each set of chromatids. So two daughter nuclei are now formed. Each daughter nucleus ends up with the same diploid number of chromosomes as the parent cell. A nucleolus develops in the nucleus of each daughter cell.
Active transport is the movement of particles against the concentration gradient
She should look for a nucleus and other membrane-bound organelles to determine if the cell is eukaryotic or prokaryotic. The eukaryotic cell will have a nucleus and membrane-bound organelles, while a prokaryotic cell will not.
More confident in the results
the others options could be valid but there is the need for more information to conclude in another hand, more confident in results is the most general case, if the repeating test brings back the same results.
Magnesium oxide is a pure substance composed of two different atoms (magnesium atoms and oxygen atoms) <span>chemically </span><span>bonded to one another.
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