During the polymerase chain reaction (PCR), there are three lengths of DNA involved: the DNA template, the intermediate length strands (defined on one end by a primer) produced from the DNA template, and the short length strands (defined on both ends by the primer pair) produced from the intermediate length strands and from other short length strands. Which of these sizes of DNA experiences an exponential increase in number?

Streptomyces rishiriensis is a Gram positive bacterium that produces dark melanin pigments and a number of antimicrobial compounds. You hope to find gene(s) responsible for the production of these melanin pigments. You transform a culture with a plasmid containing a transposon and a kanamycin resistance gene (kanR). Considering your transformation efficiency will be low, how might you find bacteria that have been successfully transformed?

How many RBCs can be present in urine sediment and still be considered normal?

Which of the following is a commonly used supravital stain used to stain cytology samples with blood contamination to improve visualization of nucleated cells in the sample?

What does urine specific gravity (USG) tells us about our patient?

If only increased numbers of macrophages are present on cytology, what type of inflammatory fluid is present?

When using the wet mount to evaluate urine sediment, you report your findings using which of the following rules?

What is the molecular geometry of CO32-?

what is the formal charge on the nitrogen atom in nitric acid, HNO3?

what species contain a bond angle less than 120