Exam3_Key_2012

Answer type 1 higher co2 concentration at the surface

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Unformatted text preview: e micrograph). Chloroplast Type 1 is found only at the cell’s periphery (arrows) and is relatively poor in grana (thylakoids). Type 2 chloroplasts (small and not very visible here, see white number 2) are clustered in the cell’s big central cytoplasmic glob! Thus, the Type 2 and Type I chloroplasts are separated from each other by the cell’s large fluid ­filled vacuoles (white space). Thin cytosolic bridges pass through the vacuoles, connecting the peripheral and central regions of the cell. (A) Which chloroplast, type I, type II, or both, would you expect to find significant amounts of PEP carboxylase and why? Answer. Type 1. Higher CO2 concentration at the surface of the cell to facilitate fixation. (B) Which chloroplast, type I, type II, or both, would you expect to find significant amounts of rubisco and why? Answer. Type 2. Lower O2 concentration in the interior of the cell to minimize oxyge...
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This note was uploaded on 01/22/2014 for the course BIOC 462b taught by Professor Grimes,tsao,borque during the Spring '08 term at Arizona.

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