This comparison of a chlorophyll being thought of as a solar panel like the ones used to generate electricity at power plants can be explained as a chlorophyll would be the solar panel, a photosystem would be a specific arrangement of the panels, granum would be a stack of solar panels, and finally, ATP would be the electrical energy that is generated at the power plant.
2. Would a plant grow better in a room painted blue or in a room painted green? Explain your answer.
A plant would grow better in a room painted blue because chlorophylls …show more content…
is the most abundant photosynthetic pigment molecule in plants and algae. Therefore, out of all the photosynthetic bacteria, chlorophyll a. would presumably come from cyanobacteria.
5. When vegetables and flowers are grown in greenhouses in the winter, their growth rate greatly increases if the CO2 concentration is raised to two or three times the level in the natural environment. What is the biological basis for the increased rate of growth?
The biological basis for the increased rate of growth is that the CO2 concentration being raised to two or three times the level in the natural environment provides the vegetables and flowers with a greater amount of CO2, which means more material to produce carbohydrates, thereby, leading to the plants growing better.
6. Over the past decades, the CO2 concentration in the atmosphere has increased. Predict the effect of increasing carbon dioxide concentrations on photorespiration.
The effect of increasing carbon dioxide concentrations on photorespiration would be that photorespiration rates should decrease as photorespiration involves rubisco reacting with O2 instead of CO2. Since CO2 is increasing, it would make it more likely that rubisco would interact with CO2 instead of …show more content…
8. How is the CAM pathway adaptive in a desert habitat?
The CAM pathway is adaptive in a desert habitat because plants open their stomata only at night, when the temperature is lower, and the humidity rises. CO2 diffuses in, and mesophyll cells incorporate it into malate, which they store in large vacuoles. The stomata closes during the day; however, the stored malate moves from the vacuole to a chloroplast and releases its CO2. The CO2 is then fixed in the Calvin cycle by the chloroplast, and the CAM pathway reduces photorespiration by generating high CO2 concentrations inside chloroplasts. This strategy saves both water and energy.
9. Explain how C4 photosynthesis is based on a spatial arrangement of structures, whereas CAM photosynthesis is temporally based.
C4 photosynthesis is based on a spatial arrangement of structures because in C4 plants, light and carbon reactions are separated into different cells. The light reactions along with a carbon-fixation reaction occur in mesophyll cells, but the Calvin cycle occurs in the inner ring of bundle-sheath cells. However, CAM photosynthesis is temporally based because it involves the Calvin cycle and the light reactions taking place in the day, while at night the CO2 is temporally