The base sequence actgac a) could occur in both dna and rna. b) could occur in dna but not in rna. c) could occur in rna but not in dna. d) could occur in neither dna nor rna.

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased