# PS1 - BIOAP 458 Spring Semester 2011 Name Raw Score/59...

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1/4 BIOAP 458, Spring Semester 2011 Prof. Beyenbach Name: Raw Score: _____/59 Percentile Score: PROBLEM SET 1 (7.5% of final grade) 1. (12 pts.) A barrier separates two glucose concentrations. Glucose can diffuse across the barrier. The diffusion coefficient of glucose in the barrier, D glucose, is 0.8 x 10 -5 cm 2 /sec. Calculate the initial rate of glucose diffusion (J glucose ), using equation 1. L: barrier thickness, diffusion distance. Note: moles/liter = moles/1000 ml = moles/1000 cm 3 . Be sure to include units in your answers. 3 pts. each. Barrier surface area = 1 cm 2 , L = 1 mm Barrier surface area = 1 cm 2 , L = 0.1 mm Barrier surface area = 1000 cm 2 , L (average) = 2 mm Barrier surface area = 1 cm 2 , L = 1 mm

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2/4 2. (19 pts.) Series versus parallel arrangements of the human circulatory system (real data). Below are real flows in a 73 kg human in good health and at rest. Organ Blood flow Resistance (ml/min) (min-mmHg/ml) liver 1620 ________ kidney 1360 ________ muscle 890
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PS1 - BIOAP 458 Spring Semester 2011 Name Raw Score/59...

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