A microbe is cultured in broth with an oxygen gradient and uniform growth is observed throughout the entire tube. The organism is most likely a(n) _____. aerotolerant anaerobe facultative anaerobe obligate anaerobe microaerophile obligate aerobe A microbe is only capable of growth at pH range of 8.5-10 in the presence of atmospheric levels of oxygen. Which statements are correct? Mark all that apply. The microbe is an obligate aerobe The microbe is likely to be a human pathogen The microbe is a mesophile The microbe is an alkiliphile Jams and jellies tend to have long shelf lives when kept refrigerated because the refrigeration temperature is too cold and prevents microbial growth their osmolarity causes plasmolysis of most microbes that may get into the jam or jelly their pH is too acidic for most microbes, causing denaturation of their proteins and enzymes their osmolarity causes osmotic lysis of most microbes that may get into the jam or jelly.