Which of the following monitors a cell's progress from phase to phase during the cell cycle?

a series of enzymes

carbohydrates

microtubules

lipid molecules

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

The production of cells during mitosis into specialized function is recombination or differentiation

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere