Eukaryotic cells have many different molecules which control the cell as it goes through the cell cycle. which of these would not be a valid reason for a cell's need to have these control molecules present? a) they prevent uncontrolled cell division b) they regulate a cell's ability to metabolize fats c) they are important to the detection of damage to the dna d) they make it impossible for the cell cycle to occur out of order

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.

Which factor that affects biodiversity?