Magaia et al. illustrated in Figure 2 the relationship of photosynthetic of temperature rate and respiration rate of C3 plants as a function (2015). Which process hampers the carbohydrate synthesis when the temperature exceeds 30°C? respiration photosynthesis 0 10 40 50 20 30 temperature C Figure 2. Relationship of photosynthetic rate and respiration rate in response to temperature. Ⓒ Magaia et al., 2015 O a. Light-dependent reaction O b. Light-independent reaction O c. Photorespiration O d. Photolysis of water rate

Magaia et al. illustrated in Figure 2 the relationship of photosynthetic of temperature rate and respiration rate of C3 plants as a function (2015). Which process hampers the carbohydrate synthesis when the temperature exceeds 30°C? respiration photosynthesis 0 10 40 50 20 30 temperature C Figure 2. Relationship of photosynthetic rate and respiration rate in response to temperature. Ⓒ Magaia et al., 2015 O a. Light-dependent reaction O b. Light-independent reaction O c. Photorespiration O d. Photolysis of water rate

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter21: Photosynthesis

Section: Chapter Questions

Problem 16P

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Magaia et al. illustrated in Figure 2 the relationship of photosynthetic rate and respiration rate of C3 plants as a function of temperature (2015). Which process hampers the carbohydrate synthesis when the temperature exceeds 30°C? a. Light-dependent reaction b. Light-independent reaction c. Photorespiration d. Photolysis of water
using a 14CO2 fixation assimilation method,a plant is found to be fixing carbon at a rate of 140mgh-1 .dm-2 leaf area in the sunlight. In darkness the same plant is losing 30mgh-1.dm-2 . Calculate the photosynthetic capacity of the plant and state with reasons to which photosynthetic type the plant belongs
Using the “basic” process of photosynthesis as a control, compare the actual processof C3 photosynthesis as well as contrast C4 and CAM photosynthesis.
How is photosynthesis related to cellular respiration? Give atleast 2 evidences that these processes play a virtual role to each other.
Why is a hypotonic buffer used for the resuspension? 1.DCPIP passes easily across the intact chloroplast membrane, but can't get into the thylakoid, so electron transport could not be reliably measured if using a hypotonic buffer. 2.To gently lyse the chloroplasts, leaving the electron transport membranes intact, whilst allowing DCPIP access 3.To gently separate the chloroplasts from each other, leaving the electron transport membranes intact, whilst allowing DCPIP access 4.DCPIP cannot easily across the intact chloroplast membrane, so electron transport could not be reliably measured if using a hypotonic buffer.
Photosynthetic response curve to light for sun (solid line, N = 14) and shade leaves (dashed line, N = 21) of S. Why in this graph do we see shaded leaves have lower values compared to light leaves as PAR is increasing?
In an experiment conducted on photosynthesis-CO2 update and photosynthesis-Determining rate in white light. what gas will be produce as an product of photosynthesis and if present, what will this allow the leaf dice to do? Also, what will be the goal of photosynthesis, and how will it be different from the goal of cellular respiration?
Despite the enormous amount of solar energy that plants are exposed to, photosynthesis is only able to transform about 1% to2% of that energy into stored chemical energy. Explain 1 factor responsible for this phenomenon and detail how it contributes to this inefficiency.
MUltiple choice (answers only) 11. Which of the following phrases apply to the dark phase of photosynthesis? I The process takes place in the thylakoids of the chloroplasts. II There is carbon fixation. III There is photophosphorylation. IV Oxygen is one of the products of the reaction. V There is a reduction. VI The process produces NADPH + H +. VII ATP molecules are necessary for the reactions to take place. a) I, III and IV b) I, II and VII II, c) V and VII d) III, IV and VI d) II, V, VI and VII 12. Aerobic respiration is more efficient than anaerobic respiration because: a) Most animals breathe air. b) Only bacteria and yeasts use anaerobic respiration. c) The blood always carries enough oxygen to the cells. d) Aerobic respiration allows for faster oxidation during intense exercise. e) more ATP is produced by a metabolized molecule. 13. At the end of glycolysis, most of the glucose energy undergoing aerobic respiration is in the molecules: a) lactic acid. b)ATP. c)pyruvic acid. d)…
Why is an isotonic buffered extraction medium used to isolate the chloroplasts? 1.To gently lyse the chloroplasts, leaving the electron transport membranes intact, whilst allowing DCPIP access 2.To maintain a constant acidic pH and favourable hyper-osmotic conditions, to ensure that the chloroplasts remained intact and functional during extraction 3.To gently separate the chloroplasts from each other, leaving the electron transport membranes intact, whilst allowing DCPIP access 4.To maintain a constant physiological pH and favourable iso-osmotic conditions, to ensure that the chloroplasts remained intact and functional during extraction.
put the follpwing steps in chronological order based upon what ypu woulf need to do to determine if an organism has photosynthethic pigments
Adjusting the wavelength of light and increasing the temperature can increase the rate of photosynthesis. Using specifics, describe in detail the effect of wavelength and temperature on photosynthesis and why or how these 2 factors affect the creation of the molecules used in or produced by photosynthesis.