Four groups of organic compounds found in living organisms are proteins carbohydrates lipids and nuclei acids. Which element is a main component in nucleic acids but not in the other three organic compounds?

What element does susan b. anthony include in this passage to strengthen her argument?

Select the correct answer from each drop-down menu. the lac operon in e.coli regulates genes that code for enzymes required for breakdown of lactose. the lac operon is operon that is activated in the presence of .

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above