For questions 4 – 7; fill in the blank to complete each sentence or statement.4. The energy required is in the form of5. The electrons that chlorophyll loses to the electron transport chain are replenished bymolecules.6.7.in order to begin photosynthesis.In many plants, the rate of photosynthesiswhen the weather becomes very cold.Oxidation means theof electrons. The electrons in photosynthesis are carried by molecules ofof electrons, and reduction means the

Green plants make their own food by photosynthesis. Photo refers to 'sunlight'. Synthesis refers 'to…

For questions 4 - 7; fill in the blank to complete each sentence or statement. in order to begin photosynthesis. 4. The energy required is in the form of 5. The electrons that chlorophyll loses to the electron transport chain are replenished by molecules. 6. In many plants, the rate of photosynthesis 7. when the weather becomes very cold. Oxidation means the of electrons. The electrons in photosynthesis are carried by molecules of of electrons, and reduction means the

For questions 4 - 7; fill in the blank to complete each sentence or statement. in order to begin photosynthesis. 4. The energy required is in the form of 5. The electrons that chlorophyll loses to the electron transport chain are replenished by molecules. 6. In many plants, the rate of photosynthesis 7. when the weather becomes very cold. Oxidation means the of electrons. The electrons in photosynthesis are carried by molecules of of electrons, and reduction means the

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter8: Photosynthesis

Section: Chapter Questions

Problem 2TYK

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Is the following statement true or false? Unlike animals, which make many ATP by aerobic respiration, plants make all of their ATP by photosynthesis.
Figure 5.7 On a hot, dry day, plants close their stomata to conserve Water. What impact will this have on photosynthesis?
Figure 8.18 Which of the following statements is true? In photosynthesis, oxygen, carbon dioxide, ATP, and NADPH are reactants. G3P and water are products. In photosynthesis, chlorophyll, water, and carbon dioxide are reactants. G3P and oxygen are products. In photosynthesis, water, carbon dioxide, ATP, and NADPH are reactants. RuBP and oxygen are products. In photosynthesis, water and carbon dioxide are reactants. G3P and oxygen are products.
Which of the following substances does not participate in the Calvin-Benson cycle? a. ATP c. NADPH e. PGAL b. O2 d. RuBP f. CO2
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.
Figure 8.16 What is the source of electrons for the chloroplast electron transport chain? Water Oxygen Carbon dioxide NADPH
What is the molecule that leaves the Calvin cycle to be converted into glucose? a. ADP b. G3P c. RuBP d. 3-PGA
The Overall Free Energy Change for Photosynthetic NADP+ Reduction What is the overall free energy change (G) for noncyclic photosynthetic electron transport? 4 (700-nm photons) + 4 (680-nm photons) + 2 H2O + 2 NADP+O2 + 2 NADPH + 2H+
Figure 8.6 On a hot, dry day, plants close their stomata to conserve water. What impact will this have on photosynthesis?
The Calvin-Benson cycle starts with _______. a. the absorption of photon energy b. carbon fixation c. the release of electrons from photosystem II d. NADP+ formation
Explain the reciprocal nature of the net chemical reactions for photosynthesis and respiration.
Which of the following pathways requires molecular oxygen (O2)? a. aerobic respiration b. lactate formation c. alcoholic fermentation d. photosynthesis