Two factors that affect the rate at which enzyme function or changes the shape of enzyme

What is the difference between an igneous, sedimentary and metamorphic rock

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.

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