When auscultating an animal's lungs, you separate the right and left thorax into quadrants.
a. seven
b. nine
c. five
d. three?

The answer to this question would be nine quadrants

Auscultating is an examination where you put stethoscope into the patient chest and try to hear their breathing/heart sound. The lung is a big organ but contains multiple lobes, so when there is an abnormality in a part the sound might not be heard in the other lobes.
It is important to auscultate the lung into at least 9 quadrants so you won't miss it.

There are four nitrogenous bases that make up dna. the two pyramidines are thymine and cytosine. the two purines are adenine and guanine. these bases pair in a very specific way. adenine - thymineguanine - cytosine i remember it like this: a tall, good cat.