You are performing a Kligler’s Triple Iron Agar test on the unknown bacterial isolate. After incubation, what does it indicate if you observe a black precipitate at the bottom of the test tube?

Which movement is typically caused when water molecules collide with the cells and make them move?  

Which eukaryotic RNA polymerase transcribes tRNA?

What subunit(s) of RNA polymerase is(are) most commonly targeted with antibiotics, such as rifamycin?

What would be the total magnification when using oculars with a magnification of 10x along with the immersion oil lens?

The results of an EMSA are show below.  What do you conclude?

What is the difference between conducting a series dilution and a serial dilution?

You are performing the Gram stain on a known Gram negative bacterium. You observe purple bacilli on your slide. Give two possible explanations for this experiment result?

If the RISC complex locates an mRNA that is complementary to the gRNA and has several mismatches,

How does the protein Dorsal get transported into the nucleus of a cell?