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1. The redwood trees in California are among the tallest trees known. If the height of a redwood was 105 m, estimate the osmotic pressure required to push water up from the roots to the treetop. Assume the roots function as a semi-permeable membrane.
(A) 1.02 atm
(B) 4.2 attn
(c) 10.2 atm
(D) 42 atm
(E) 102 attn
2. The diffusion coefficient of a protein in a buffered solution at 20°C was measured using a concentration gradient between two reservoirs with concentrations of 100 gM and 1 gM respectively. The two reservoirs were separated by a 1 mm thick porous glass disk with a 4.2 cm2 effective area. About 0.1 pmols of the protein were detected to be crossing the disk per hour. What is the diffusion coefficient D of the protein?
(A) 9.4x 10-6 cm2 s-1
(B) 8.0x 10-6 cm2 s-1
(C) 4.0 x 10-7cm2 s-1
(D) 4.2 x 10-6 cm2 s-1
(e) 6.7 x 10-6 cm2 s-1
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General Biology. Please provide complete, correct, and scientific solution done on computer or by hand. Please, emphasis on correct and verified solution. This is all the information provided
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