Which are replicated during interphase? sister chromatids chromosomes centromeres nuclei

The population of bacteria in a petri dish doubles every 40 seconds. the population of the bacteria is initially 400 organisms. what unit is most appropriate for the time at which the number of bacteria is 300? hour bacteria per hour second bacteria per second

Which symbols below represent the ions found in the glass of water ? a. oh- and h+ b. co2 and o2 c. o2 and h2 d. nh3- and h+

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous