Q. A train is travelling up a 3.73 degree incline at a speed of 3.25m/s as the last car breaks free. How far does last car travel before its speed momentarily reaches zero? Q. David is driving a steady 25 while he passes Tina, who is sitting in her car […]

A student runs an enzyme assay using pig heart mitochondrial malate dehydrogenase (MDH; found inthe Krebs cycle). The assay contains the following: 400 ?l 20 mM MOPS, pH 7.4 10 ?l 10 mM NADH (in H2O) 10 ?l 25 mM oxaloacetate (in H2O) 30 ?l of their MDH solution, in […]

Q. Bryophytes and fern allies were most prevalent during early plant evolution; however, many of these plants have been replaced by vascular plants. These “lower” plants possess flagellated sperm that have to swim through an aqueous medium to reach and fertilize eggs. From this information, in what kinds of habitat […]

You have determined the DNA- binding site of a protein by determining the DNA footprinting after labeling one strand. To check your results, you repeat the experiment after labeling the other strand of the duplex. You find that the footprints are slightly offset from one another relative to the sequence […]