32. If available, the body will always digest which macromolecule for energy first? A. lipids B. proteins C. enzymes D. carbohydrates

33. The class of macromolecule that would most likely be involved in contracting muscles would be A. lipids B. proteins C. enzymes D. carbohydrates

Need will mark ! which features are created by groundwater erosion and deposition? check all that apply. a. stalagmitesb. sinkholesc. rillsd. stalactites e. gullies f. rivers

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

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth