Which organelle makes the proteins that are needed by the cell?
a. cell membrane
b. golgi apparatus
c. ribosomes
d. nucleus

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d

Why are common names a problem for scientist?