When calculating the concentration of bacteria in a liquid culture, you should plate multiple dilutions of your culture then count the colonies that develop on only one of those plates.  The plate that you count should contain between 30 and 300 colonies.  Should you avoid using plates with fewer than […]

Imagine you do a test cross between a purple-flowered pea plant having serrated leaves (a dominant trait) and a white-flowered pea plant having smooth edges. If the purple-flowered plant is heterozygous for both traits, the expected ratio in the offspring is 1 purple-serrated: 1 purple-smooth:1 white-serrated:1 white-smooth. Instead, you see […]

A young couple went to see a genetic counselor because each had a sibling affected with cystic fibrosis. (Cystic fibrosis is a recessive disease, and neither member of the couple nor any of their four parents is affected.) a. What is the probability that the female of this couple is […]

Ventilation-Perfusion Assignment Questions How do changes in ventilation rate, cardiac output, and dead space ventilation affect alveolar PO2 and pulmonary venous PO2? Do these three factors have an additive effect towards increasing or decreasing total oxygen delivery to tissues. Explain. Matlab files Vsensim and fdeadsens can be used as a […]