3.3 Assuming the same pressure gradient, flow through a vessel with a diameter of 100 m is _______ faster than through a tracheid of 25 m diameter

A. 4×
B. 16×
C. 64×
D. 256×


D

Biology & Microbiology

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Root activities are all passive, requiring no additional energy

A. true B. false

Biology & Microbiology

The source of new alleles within a population is ____

a. natural selection b. mutation c. nonrandom mating d. adaptation e. genetic drift

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The process by which alleles in one gene move into gametes independent of alleles in other genes is known as ____

a. independent segregation b. independent separation c. probability separation d. probability assortment e. independent assortment

Biology & Microbiology

Which type of cells is the HIV virus able to infect?

A. B lymphocytes and nervous tissue B. red blood cells and liver cells C. macrophages and T lymphocytes D. brain cells and glands E. intestine and T lymphocytes

Biology & Microbiology