If a plant is removed from its natural environment and exposed to 100 percent CO2 composed of the radioisotope 14C, which of the following will not occur?
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If a plant is removed from its natural environment and exposed to 100 percent CO2 composed of the radioisotope 14C, which of the following will not occur?
![[PLANT PHYSIOLOGY] If a plant is removed from its natural environment and exposed to 100 percent CO2 composed of the radioisotope 14C, which of
the following will not occur?
Select one:
O a.
Rubisco will eventually contain 14C.
Ob.
The rate of photorespiration will remain unchanged.
Oc. All the carbon molecules in the RUBP molecules will eventually become 14C.
The oxygen released will also be radioactive.
e.
The sugars synthesized by the plant will be radioactive.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F40cbeb66-d88d-4e01-b4b5-1176e5b78ecf%2F6e20e25d-2728-4c54-97bd-f7b9e604eccb%2Fq9b40m_processed.jpeg&w=3840&q=75)
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- Photosynthesis directly opposes respiration in determining how plants influence atmospheric CO2 concentrations. When a leaf is in the light, both photosynthesis and respiration are occurring simultaneously. The data in the Table were collected from the leaf of a sagebrush plant that was enclosed in a chamber that measures the rate of CO2 exchange. The same leaf was used to collect the data in Interpret the Data in Chapter 7. Respiration is shown as a negative and photosynthesis as a positive rate of CO2 exchange. The net photosynthesis rate is the amount of CO2 (in micromoles per square meter per second) assimilated by the leaf while respiration is occurring; a positive value indicates more photosynthesis is occurring than respiration. The light exposed to the leaf is quantified as the number of photons in the 400 to 700 nm wavelength, the photosynthetic photon flux density (PPFD); 2,000 mol/m2/s is equivalent to the amount of light occurring at midday in full Sun. Observation Photosynthetic Photon Flux Density (PPFD) (mol/m2/s) Net Photosynthesis (mol/m2/s) 1 2,000 9.1 2 1,500 8.4 3 1,250 8.2 4 1,000 7.4 5 750 6.3 6 500 4.8 7 250 2.2 8 0 -2.0 Why is net photosynthesis negative when PPFD is zero? Looking at the respiration data from Interpret the Data in Chapter 7, at what temperature do you think these data were collected? Source: Data based on unpublished research by Brent Ewers, University of Wyoming.Photosynthesis is defined as the chemical process, wherein carbon dioxide in the presence of water and radiant energy gets converted to glucose (chemical energy), giving out oxygen as byproducts. In the equation, the combining reactants and resulting products are expressed along with their respective numbers of molecules. Putting this in a simplified formula, the following equation represents this process. CO2 + H2O + Light energy → C6H12O6 + O2 Considering this equation, how plant lovers (plantitos and plantitas) able to cultivate their plants?If a plant is removed from its natural environment and exposed to 100 percent CO2 composed of the radioisotope 14C, which of the following will not occur? Select one: a. The rate of photorespiration will remain unchanged. b. The sugars synthesized by the plant will be radioactive. c. The oxygen released will also be radioactive. d. All the carbon molecules in the RuBP molecules will eventually become 14C. e. Rubisco will eventually contain 14C.
- You have discovered a novel peptide that, when administered to plant cells, spontaneously inserts into the thylakoid membranes and forms a channel that lets protons cross the membrane. You treat plant cells growing normally with your peptide. Which of the following statements correctly describes the effect on photosynthesis shortly after the addition of the peptide? Select all that are true. a. The rate of Glyceraldehyde 3-phosphate synthesis will decrease b. The rate of oxygen production will be unaffected c. The rate of Glyceraldehyde 3-phosphate synthesis will increase d. The rate of oxygen production will decrease e. The rate of oxygen production will increase f. The rate of Glyceraldehyde 3-phosphate synthesis will be unaffectedYour friend is looking for advice for growing healthy houseplants. With what you read in the textbook about photosynthesis, provide your friend with three specific factors that are key to successful plant growth. Provide specific details as to why you chose these factors and how your friend can make sure the plants are able to maximize their photosynthetic rate.Under what conditions do the wasteful side reaction of O2 with rubisco become significant? a.) at night when the sun goes down and photosynthesis is limitng b.) low temperatures and high moisture c.) higher levels of soluable CO2 than O2 d.) higher levels of soluable O2 than CO2 e.) higher levels of rubisco enzyme in the cytoplasm
- 1. Thinking about photosynthetic pigments, which statement is correct? A. The pigments found within most types of photosynthesizing cells are primarily chlorophylls and carotenoids. B. The pigments that reflect solar energy are in the membrane of the thylakoid C. Pigments play an important role in the absorption of chemical energy for photosynthesis. D. Leaves contain only one type of pigment and that is the green chlorophyll.During oxygenic photosynthesis in plants, the hydrogen atoms that end up in product carbohydratemolecules are coming from which of the following substrate molecules?A. water molecules (H2O)B. sucrose sugars (C12H22O11)C. carbon monoxide (CO)D. glucose sugars (C6H12O6)E. carbon dioxide (CO2)Plants must obtain CO2 but avoid the loss of H2O by evaporation. What would be the effect of increased atmospheric [CO2] on photosynthesis?Would the effect be the same for C3 and C4 plants?
- which of the following water will allow better photosynthesis (therefore greater oxygen release), boiled water, sparkling water or tap water and why ? also, are there any pertinent scientific articles or websites on the subject, explaining the influence of water (boiled, tap or sparkling) on photosynthesis, thanks :)The Calvin cycle, the "dark reaction" or Carbon fixation reactions of photosynthesis, cannot occur at night in a living plant. Which of the following best describes why this is true? A) The stomata are incapable of opening at night, thus CO2 cannot enter the leaf B) The reactions of the Calvin cycle are dependent on light reactions for high-energy compounds C) Several enxymes necessary for Calvin cycle activity have been degraded during the day and must be replaced D) Light is required to transport the water necessary for the cycle E) Cooler temperatures at night slow enzyme activity and rates of substrate diffusionThe equation for photosynthesis is 6CO2 + 6H2O + Sunlight --> C6H12O6 + 6O2. Explain the role of each of the products (left side of the arrow) and explain where the products (right side of the arrow) came from.