Which is the best reason for adenine base-pairing with thymine in DNA?
A. The two molecules covalently bond together.
B. Both are large bases and, therefore, bond tightly.
C. Both are small bases and, therefore, bond tightly.
D. These two bases fit together like jigsaw puzzle pieces.
D. These two bases fit together like jigsaw puzzle pieces.
You might also like to view...
A tube foot of a sea star moves when the small muscular bulb called the ____ contracts, forcing fluid into the tube foot
a. ampulla b. ossicle c. radial canal d. ring canal e. madreporite
In the figure above, which DNA fragment is closest to the positive electrode?
a. A b. B c. E d. G e. H
The term "biotech barnyards" refers to ____
a. the production of human therapeutic proteins by farm animals b. the development of new species of farm animals c. the increased production of milk, egg, wool, etc. d. modern methods of raising more animals on less feed e. the creation of transgenic animals that can produce several products
Translational controls of protein levels in bacteria are governed by:
a. the rate at which small and large subunits of ribosomes assemble. b. the rate at which the cap and tail of pre mRNA are removed. c. the rate at which ribosomes attach to mRNA molecules. d. the concentration of proteins in the cytoplasm. e. the rate at which sugars are incorporated into the cell.