Eubacteria exhibit all of the following except
a. nuclei
b. strong exterior walls made of peptidoglycan
c. a lack of internal compartments
d. size less than 15 u

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity

Below, the levels of organization in a multicellular organism are shown from least to most complex. which level of organization can be described as several different types of tissues working together to perform a common task?