Blood flow through vessel A, 1 mm in diameter, occurs with a 10 kPa pressure gradient from one end to the other. Blood flow through vessel B, 2 mm in diameter, occurs with a 1 kPa pressure gradient from one end to the other. Other conditions are identical. Compared to vessel A, blood flow in vessel B is ____.

a. 1/10 as fast
b. 1.6 times faster
c. 16 times slower
d. 10 times faster


Ans: b. 1.6 times faster

Biology & Microbiology

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Which cells make you immune to a disease that you were previously exposed to?

a. effector cells. b. memory cells. c. dendritic cells. d. phagocytes. e. fibroblasts.

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A dihybrid cross is a cross that involves two pairs of contrasting traits. Mendel's law of independent assortment can be used to predict the genotypes and phenotypes of the offspring produced in such a cross. Which of the following is an example of a dihybrid cross?

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Biology & Microbiology