Question

the diagram below shows an investigation performed over a period of 24 hours. the gas released in this investigation (shown on the y axis) can be used in cellular respiration to form an energy - storing compound. what is the name of this gas produced in his process? a o2 b dna c h2o d atp question 6 mrs. wright (who is always right, just ask her), is caring for her sons prize tomato plants while he attends a tomatologist conference. she brings them into the house due to a pending ice storm and places them in a dark room. she provides plenty of water and soil nutrients, but does not turn on the lights to conserve energy. which of the following is most likely to occur first? a light dependent cycle will continue at the same rate with adequate water and nutrients. b fermentation will begin in the chloroplasts of the leaf cells. c photosynthesis will end abruptly, as mrs. wade is a plant murderer. d calvin cycle will continue as long as the products from the light dependent cycle and co2 are available.

Explanation:

• For the first question:
• In photosynthesis, \(O_2\) (oxygen) is released as a by - product. Cellular respiration uses \(O_2\) to produce ATP (adenosine triphosphate), an energy - storing compound. DNA is a nucleic acid, \(H_2O\) is water (not a gas in this context for the described process), and ATP is not a gas.
• For the second question:
• The light - dependent cycle of photosynthesis requires light. Since the plants are in a dark room, the light - dependent reactions will stop.
• Fermentation occurs in the absence of oxygen in the cytoplasm (not in chloroplasts).
• The Calvin cycle (light - independent cycle) depends on the products of the light - dependent cycle (\(ATP\) and \(NADPH\)). When the light - dependent cycle stops (due to no light), the Calvin cycle will also stop after some time as it depletes the existing \(ATP\) and \(NADPH\). But the immediate effect is that the light - dependent reactions (which need light) will stop, and since photosynthesis is a two - stage process (light - dependent and light - independent), photosynthesis (as a whole) will end abruptly as the light - dependent reactions (a crucial part of photosynthesis) cannot occur without light.

Answer:

• First question: a. \(O_2\)
• Second question: c. Photosynthesis will end abruptly, as Mrs. Wade is a plant murderer (because the light - dependent reactions of photosynthesis, which are essential for the overall process, cannot occur in the dark)