Sebastian wants to make ball-and-stick models of the four macromolecules. He has colored balls for each of the elements in these molecules, including the following. red: hydrogen black: carbon purple: oxygen green: nitrogen For a model of which macromolecule will he need mostly black and red balls? carbohydrates lipids nucleic acids proteins

Two technicians are discussing how to test a car's exhaust by holding a small piece of paper within an inch of the tailpipe mouth. technician a says that if the paper is vibrating due to a "puffing" output from the tailpipe, this signals a smoothly running engine. technician b says that if the paper is being drawn toward the tailpipe, this could indicate burned exhaust valves. who is correct? a. technician b b. both technicians a and b c. technician a d. neither technicians a or b

Keep your choice of a major there is probably no single correct choice. a ) to yourself. b) in perspective. c) based solely on the expectations of others. d) all of the answer choices are correct.

Use the rule of 72 to calculate how long it will take for your money to double if its earning 6% in interest. a. 12yrs b. 16yrs c. 36yrs d. 72yrs