Diagram 8: Temperature and Rate of Photosynthesis5 10 15 20 25 30 35 40temperature (°C)The most accurate explanation for lower rates of photosynthesis at high temperatures would beThe water splitting enzyme and ATP synthase will change their shapes at higher temperature and not function properly.There is less light at high temperatures to power the light dependent reactions.Less O2 is available to power the Calvin Cycle when temperatures are high.There is a lower availability of CO2 for photosynthesis at higher temperatures.rate of photosynthesis

Ans-The water-splitting enzyme and ATP synthase will change their shapes at higher temperatures…

Diagram Temperature and Rate of Photosynthesis 5 10 15 20 25 30 35 40 temperature (°C) The most accurate explanation for lower rates of photosynthesis at high temperatures would be rate of photosynthesis

Diagram Temperature and Rate of Photosynthesis 5 10 15 20 25 30 35 40 temperature (°C) The most accurate explanation for lower rates of photosynthesis at high temperatures would be rate of photosynthesis

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 10TYK: Animal metabolism and plant metabolism are related in that: a. plants carry out photosynthesis and...

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Concept explainers

Photosynthesis

Plants have a capacity that we humans can only imagine— the ability to produce food from sunlight. Sure, we can prepare some dishes that we can savor on, but it become possible because of the plants (as they serve as a producers of all the raw materials required). Photosynthesis is the method of assembling carbohydrates with the aid of sunlight.

Question

Diagram 8: Temperature and Rate of Photosynthesis
5 10 15 20 25 30 35 40
temperature (°C)
The most accurate explanation for lower rates of photosynthesis at high temperatures would be
The water splitting enzyme and ATP synthase will change their shapes at higher temperature and not function properly.
There is less light at high temperatures to power the light dependent reactions.
Less O2 is available to power the Calvin Cycle when temperatures are high.
There is a lower availability of CO2 for photosynthesis at higher temperatures.
rate of photosynthesis

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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.
In ________, electrons that have been energized by light contribute their energy to add phosphate to ADP, producing ATP. (a) crassulacean acid metabolism (b) the Calvin cycle (c) photorespiration (d) C4 pathways (e) photophosphorylation
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.
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
Is the following statement true or false? Unlike animals, which make many ATP by aerobic respiration, plants make all of their ATP by photosynthesis.
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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 5.7 On a hot, dry day, plants close their stomata to conserve Water. What impact will this have on photosynthesis?
Which part of the Calvin cycle would be affected if a cell could not produce the enzyme RuBIsCO?
A decrease in entropy occurs during the CO2 uptake phase of the Calvin cycle, as freely moving CO2 molecules become fixed into a carbon skeleton. How can this occur without direct participation by NADPH and/or ATP?
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.