Biology
Biology, 27.07.2019 19:20, vanessasantos2004vs

Why are most plants unable to run the calvin cycle at night?

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Chemistry, 30.07.2019 14:00, rjennis002
In plants, the first product of carbon fixation is the three-carbon compound 3-pga formed in the calvin cycle. 2. when such plants close their stomata on hot, dry days to conserve water, builds up in the leaf and is added to rubp in place of co2. a two-carbon product of this reaction is broken down to co2, consuming atp and generating no sugar. 3. the apparently wasteful process described in sentence 2 is called . 4. in plants, co2 is first fixed into a four-carbon compound, which moves into bundle-sheath cells and releases co2 to the calvin cycle. 5. in plants, stomata are open at night, and co2 is first fixed into a four-carbon compound, which releases co2 to the calvin cycle during the day. 6. in all three types of plants, the enzyme brings co2 into the calvin cycle.
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Biology, 13.09.2019 23:30, pk4mk
The calvin cycle is considered light-independent because it can occur in darkness. however, most often the calvin cycle takes place in sunlight. which of the following likely explains why? a) the enzymes involved in the calvin cycle are unable to bind substrates in the dark. b) sunlight is important in activating carbon fixation in the calvin cycle c) the calvin cycle requires atp and nadph, which require sunlight to be produced d) ruãÿp regeneration requires sunlight in order to occur and continue the calvin cycle.
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Biology, 01.11.2019 06:31, kevinhernandez582
C₄ plants differ from c₃ and cam plants in that c₄ plants a. transfer fixed carbon dioxide to cells in which the calvin cycle occurs b. use malic acid to transfer carbon dioxide to the calvin cycle c. are better adapted to wet conditionsd. use pep carboxylase to fix carbon dioxide e. open their stomata only at night
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