During log-phase growth, e. coli can divide once every 20 minutes. the e. coli chromosome is about 4,600,000 base pairs long. the single origin of replication provides two replication forks, and each of the associated dna polymerase synthesizes about 750 base pairs per second. how long will it take, in minutes, to duplicate the e. coli chromosome?

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

idk im sorry.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.