#3 Question 8 Draw the proper line-angle structure that corresponds to the compound shown. Note: black=C; white = H; red = O. This is a graded question. Do it yourself. Upload Choose a File D Question 9 Q 2 pts Draw the line-angle structure of one isomer of the compound shown that has one more CH2 + 4 pts $ % 1 ( 4 5 6 7 8 9 0

A beginning genetics student is attempting to complete an assignment to draw a base pair from a DNA molecule. The drawing is incomplete, and the student does not know how to finish. He asks for your advice. The assignment sheet shows that the drawing is to contain three hydrogen bonds, a purine, and a pyrimidine. From your knowledge of the pairing rules and the number of hydrogen bonds in A/T and G/C base pairs, what base pair do you help the student draw?

What enables a radioisotope to substitute for an ordinary (nonradioactive) atom of the same element molecule?