Some xerophytes only uptake this substance during the night when it is cooler, while those that employ the C­4 pathway temporarily fix it in mesophyll cells before shuttling it to a location where RuBisCO adds it to its substrate, thus preventing photorespiration.
When oxygen competitively inhibits this substance in a certain enzymatic reaction, 2-phosphoglycolate is produced. Some xerophytes only uptake this substance during the night when it is cooler, while those that employ the C­4 pathway temporarily fix it in mesophyll cells before shuttling it to a location where RuBisCO adds it to its substrate, thus preventing photorespiration. Peat bogs have been proposed as a way of sequestering this substance. Its uptake must co-occur with transpirational loss, because it is absorbed via the stomata. For 10 points, name this triatomic gas that is converted into G3P and eventually into sugars, resulting in the exhalation of oxygen by plants.
When oxygen competitively inhibits this substance in a certain enzymatic reaction, 2-phosphoglycolate is produced.
carbon dioxide [or CO2; do not accept or prompt on "carbon"]