What are the effects of different light colors in photosynthesis?Different light colors will change the rate of photosynthesisLight color does not affect photosynthesisCarbohydrates are metabolized by lightPhotosynthesis does not require light Figure 2 below represents the reaction rate for a â specificâ enzymone of the followings is true for figure 2:6 7 8 9 10Figure 2. – Enzymatic activity over various pH levels.O a pH of 8 is optimum for this enzymethe enzyme was degraded at pH 8the enzyme does not have any activity above pH 8O the enzyme has optimum rates above and below pH 8O the enzyme produces no reaction at pH 8Enzyme activity

Photosynthesis is the phenomenon by which green plants and other organisms prepare food. They…

What are the effects of different light colors in photosynthesis? O Different light colors will change the rate of photosynthesis O Light color does not affect photosynthesis O Carbohydrates are metabolized by light O Photosynthesis does not require light

What are the effects of different light colors in photosynthesis? O Different light colors will change the rate of photosynthesis O Light color does not affect photosynthesis O Carbohydrates are metabolized by light O Photosynthesis does not require light

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter8: Photosynthesis

Section: Chapter Questions

Problem 3VCQ: Figure 8.18 Which of the following statements is true? In photosynthesis, oxygen, carbon dioxide,...

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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

What are the effects of different light colors in photosynthesis?
Different light colors will change the rate of photosynthesis
Light color does not affect photosynthesis
Carbohydrates are metabolized by light
Photosynthesis does not require light

Figure 2 below represents the reaction rate for a â specificâ enzymone of the followings is true for figure 2:
6 7 8 9 10
Figure 2. – Enzymatic activity over various pH levels.
O a pH of 8 is optimum for this enzyme
the enzyme was degraded at pH 8
the enzyme does not have any activity above pH 8
O the enzyme has optimum rates above and below pH 8
O the enzyme produces no reaction at pH 8
Enzyme activity

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Match each term with its most suitable description. ____ PGAL formation a. absorbs light ____CO2 fixation b. converts light to chemical energy ____ autotroph c. self-feeder ____ ATP forms NADPH does not d. electrons cycle back to photosystem ____ photorespiration e. problem in C3 plants ____ photosynthesis f. Calvin-Benson cycle product ____ pigment g. water molecules split ____ photolysis in photosynthesis h. rubisco function
Where in plant cells does the Calvin cycle take place? a. thylakoid membrane b. thylakoid space c. stroma d. granum
Plants use__________ as an energy source to drive photosynthesis. a. sunlight b. hydrogen ions c. O2 d. CO2
Figure 5.7 On a hot, dry day, plants close their stomata to conserve Water. What impact will this have on photosynthesis?
In C3 plants, ______ makes sugar production inefficient when stomata close during the day. a. photosynthesis b. photolysis c. photorespiration d. carbon fixation
In C3 plants, _______ makes sugar production inefficient when stomata close on hot, dry days. a. photosynthesis c. photorespiration b. photolysis d. carbon fixation
What is the molecule that leaves the Calvin cycle to be converted into glucose? a. ADP b. G3P c. RuBP d. 3-PGA
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.
Most of the carbon dioxide that plants use for photosynthesis comes from ________. a. glucose b. the atmosphere c. rainwater d. photolysis
What is the energy of a photon first used to do in photosynthesis? a. split a water molecule b. energize an electron c. produce ATP d. synthesize glucose
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.
Most of the carbon dioxide that plants use for photosynthesis comes from ________. a. glucose b. the atmosphere c. rainwater d. photolysis