If plants described in problem 4 are illuminated by a combination of light of 680 nm and 700 nm, the oxygen production exceeds that of either wavelength alone. Explain.
Q: For most plants, two distinct photosystems (Photosystem I and Photosystem II) work together in…
A: Photosynthesis is a physico - chemical process carried out by green plants. Using this process,…
Q: using a 14CO2 fixation assimilation method,a plant is found to be fixing carbon at a rate of…
A: The photosynthetic capacity of plants is defined as the maximum rate of carbon fixation by leaves…
Q: If the light-independent reaction can run without light, why does oxygen production (and presumably…
A: Introduction: The process of photosynthesis occurs in two stages, the first phase is called the…
Q: Assume a pH gradient of 4.0 units across a thylakoid membrane, with the lumen more acidic than the…
A: The longest wavelength of the light may provide sufficient energy to pump a proton against the…
Q: Why does darkness affect the light independent reactions of photosynthesis?
A: Plants utilize water and carbon dioxide in the presence of sunlight to form high-energy compounds…
Q: If photosynthesizing plants are grown in thepresence of 14CO2, is every carbon atom of the glucose…
A: The net reaction in photosynthesis is the reaction of six molecules of carbon dioxide to form one…
Q: Make one table to show: At what wavelengths do the 3 photosynthetic pigments absorb the most (i.e.,…
A: Green plants are capable of producing their own food with the help of solar energy. They have…
Q: What is implied about the energyrequirements of photosystems I and II by the fact that there is a…
A: Photosynthesis is the process by which green plants and certain other organisms transform light…
Q: Assume a pH gradient of 4.0 units across a thylakoid membrane, with the lumen more acidic than the…
A: The thylakoid membrane of chloroplast is the site where the light reaction of photosynthesis takes…
Q: Which of the following is not involved in cyclic cyclic photophosphorylation? Group of answer…
A: During photosynthesis the photoexcited electron that is energized by light passes from the primary…
Q: Explain why the arrangements of pigments in the chlorosome an efficient way of absorbing light at…
A: Green photosynthetic bacteria's chlorosomes are the most efficient light gathering systems present…
Q: Explain why the chlorophylls in light-harvesting complexes must absorb light of shorter wavelength…
A: Both photosystems in the photosynthetic complex have many pigments collecting light energy. Along…
Q: In simple words, how does is ATP produced in light reactions?
A: Photosynthesis occurs in two sequential stages, namely, light (light-dependent) reactions and dark…
Q: Is it reasonable to list standard reduction potentials for the reactions of photosynthesis? Why or…
A: Photosynthesis causes water to be converted to oxygen by oxidation and NADP+ is reduced to NADPH.…
Q: What is the correct sequence of steps in the light reaction? ADP + Pi --> ATP oxidation of water…
A: In plants, photosynthesis occurs in two stages one is light-dependent and the other is…
Q: What color of light is least effective in driving photosynthesis? Explain.
A: Photosynthesis is a process through which chlorophyll-containing organisms can absorb solar energy…
Q: What conditions maximize photorespiration?
A: Photorespiration is the process that occurs in C3 plants under certain conditions in which instead…
Q: THE LIGHT DEPENDEN REACTION MUST OCCUR BEFORE THE LIGHT INDEPENDENT REACTION TRUE OR FALSE?
A: Photosynthesis is process of synthesis of glucose monitoring molecule from inorganic materials like…
Q: Where does carbon dioxide fixation take place in a chloroplast with reference to the…
A: The chloroplast is the cell organelle that is found mostly in plants and cyanobacteria. It consists…
Q: Why does CO2 depress photorespiration?
A: Photorespiration : It is a respiratory process in many higher plants by which they take up oxygen…
Q: Why does NADPH absorb light at 260 nm? At 340 nm?
A: Hi! Thank you for the questions. Since the second question is related to lab/experiment, I will be…
Q: Light Independent Reactions take place in the O stroma of the mitochondria O thylakoid membrane of…
A: Light energy is tackled in Photosystems I and II, the two of which are available in the thylakoid…
Q: 100 50 - 400 450 500 550 600 650 700 Wavelength (nm) In the absorption spectrum shown above, what…
A: Photopigment is the pigment present in plants for absorption of light in different wavelengths .The…
Q: Why do the reaction centers have different pigments rather than only the chlorophyls?…
A:
Q: How does the anatomical differences between C3 and c4 leaves facilitate photosynthesis 2) discuss…
A: 1. The anatomical differences between C3 and c4 leaves facilitate photosynthesis is that - C3…
Q: In cyclic photophosphorylation, it is estimated that two electrons must be passed through the cycle…
A: Cyclic photophosphorylation is the process in which cycling of electrons occurs through a set of…
Q: How, then, do plants that grow in hot climates ,such as sugar cane, prevent very high rates of…
A: Photorespiration or C2 is a process of plant metabolism, which uses the enzyme RuBisCO to oxidize…
Q: What is photophosphorylation by oxidative phosphorylation
A: Phosphorylation is the process of the addition of a phosphate group to a compound or molecule and…
Q: What fraction of the energy of 700- nm light absorbed by photosystem I is trapped as highenergy…
A: Photosystem I is part of the photosynthetic light reaction. It uses light energy as the source for…
Q: On a hot, dry day, plants close their stomata to conserve water. Explain the connection between the…
A: Photosynthesis: It is process by which plants makes their own food in the presence of sunlight. The…
Q: What is the advantage to plants to have the option of both cyclic and noncyclic pathways for…
A: Photophosphorylation is the process of utilizing light energy from photosynthesis to convert ADP to…
Q: In cyclic photophosphorylation, it is estimated that two electrons must be passed through the cycle…
A: Calculating the E (total energy) produced by the 700 nm light: We know, E = h c/λ Where, h (Planck’s…
Q: In terms of aerobic cellular respiration, how does this photo works?
A: Cellular respiration is the process by which organisms mix oxygen with food molecules, transferring…
Q: What percentage of photosyntheticallyactive radiation is captured by plants?
A: Plants are mainly multicellular, predominantly photosynthetic eukaryotes of the kingdom Plantae.…
Q: What is known as photoreactivation enzyme (PRE) or photolyase ?
A: Introduction: DNA comprises nitrogenous bases such as purines and pyrimidines. Each type of…
Q: Observing the over-all equation for photosynthesis, what are two variables other than light…
A: Photosynthesis is a process by which green plants (containing chlorophyll) synthesize glucose from…
Q: In cyclic photophosphorylation, it is estimated that two electrons must bepassed through the cycle…
A: Calculating the E (total energy) produced by the 700 nm light: We know, E = h c/λ Where, h (Planck’s…
Q: Dark reaction of photosynthesis does not need light. Do plants undergo darkreaction at night…
A: PHOTOSYNTHESIS: It is the process of making food in the green plants with the help of sunlight,…
Q: Which of the following is CORRECT regarding cyclic photophosphorylation?
A: The correct option regarding cyclic photophosphorylation is - OCCURS WITH PHOTOLYSIS OF WATER.
Q: What fraction of the energy of 700-nm light absorbed by photosystem I is trapped as high-energy…
A: In the light reaction, both photosystems I and II are involved. The PS-II absorbs 680nm range light…
Q: would you expect an absorption spectrum graph of chlorophyll (green plant pigment involved in…
A: During propagation, light behaves as a wave and as it interacts with any matter it behaves as a…
Q: When running cycle photophosphorylation and passaging electrons from PSI to two fully reduced PQH2s,…
A: Photophosphorylation is basically using light energy to convert ADP to ATP During photosynthesis…
Q: Differentiate the cyclic and non- cyclic photophosphorylation.
A: The process of using light energy from photosynthesis to change ADP into ATP is known as…
Q: What is midpoint potential of redox active centers in photosynthetic organisms? What factors affect…
A: Note- as we are allowed to do only one question at a time. I'm posting answer of first question.…
Q: In cyclic photophosphorylation, it is estimated that two electrons must be passed through the cycle…
A: ATP is the principal molecule for storing and transferring energy in cells. It is often referred to…
If plants described in problem 4 are illuminated by a combination of light of 680 nm and 700 nm, the oxygen production exceeds that of either wavelength alone. Explain.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- In cyclic photophosphorylation, it is estimated that two electrons must be passed through the cycle to pump enough protons to generate one ATP. Assuming that the AG for hydrolysis of ATP under conditions existing in the chloroplast is about –50 kJ/mol, what is the corresponding percent ef- ficiency of cyclic photophosphorylation, using light of 700 nm?In cyclic photophosphorylation, it is estimated that two electrons must be passed through the cycle to pump enough protons to generate one ATP. Assuming that the ΔG for hydrolysis of ATP under conditions existing in the chloroplast is about -50 kJ/mol, what is the corresponding percent efficiency of cyclic photophosphorylation, using light of 700 nm?In cyclic photophosphorylation, it is estimated that two electrons must be passed through the cycle to pump enough protons to gener- ate one ATP. Assuming that the AG for hydrolysis of ATP under con- ditions existing in the chloroplast is about –50 kJ/mol, what is the corresponding percent efficiency of cyclic photophosphorylation, using light of 700 nm?
- In cyclic photophosphorylation, it is estimated that two electrons must bepassed through the cycle to pump enough protons to generate one ATP.Assuming that the ∆G for hydrolysis of ATP under conditions existing inthe chloroplast is about -50 kJ/mol, what is the corresponding percent efficiency of cyclic photophosphorylation, using light of 700 nm?Which of the mechanisms for dissipating light energy shown in Fig. would best protect the photosystems from excess light energy?In photosynthesis, contrast the light reactions with the light independent reactions, in terms of goals, inputs, and outputs of each. Spatially where do they take place (which parts of the chloroplast)? (Optional, for further discussion: Could there be light reactions without light-independent reactions, or visa-versa?)
- Explain why the chlorophylls in light-harvesting complexes must absorb light of shorter wavelength than the light that would directly excite the special pair of PSI or PSII.Cyclic photophosphorylation uses two photons to generate one ATP. If the AG of ATP hydrolysis is -50 kj/mol. What is the percent efficiency of cyclic photophosphorylation? F =96.5 kj/mol*V. Use c AG = -nFAV ⒸShow Transcribed Text to solve.Melvin Calvin and Andrew Benson determined the steps in the light-independent reactions of photosynthesis by exposing the green alga Chlorella to CO2 labeled with the radioisotope carbon 14. By looking at which compounds the C14 ended up in, they were able to identify all intermediates in this cyclic pathway. Why did they predict correctly that the same set of intermediates would be formed in the light reaction in land plants?
- For photosynthesis lab in biology 1) This lab uses spinach leaves. Name another plant that would make an interesting comparison to spinach. Explain why you think this leaf would provide an interesting comparison 2) The lights used in this experiment are 60W. What would you predict the effect of having stronger or weaker wattage bulbs would be on your results? Explain. 3)This lab uses 0.2% sodium bicarbonate. What would you predict the effect of raising or lowering the percentage would be on your results? Explain. 4)What are TWO other things that might be manipulated in an experiment using this same protocol other than the type of leaf, percent sodium bicarbonate, and wattage of light bulb? 5) What key thing do you have to look for on the graph to know for certain that your treatment has caused a significant effect?So, what is actually produced during the light reaction? Do you know the chemical equation? a) 2 H20 + 2 NADP+ + NADP + nPi + hv produce O2 + 2 NADPH + 2 H* + NATP b) O2 + 2 NADP+ + NATP + hv produce 2 H2O + 2 NADPH + 2 H+ + NADP + nPi c) 2 H20 + 2 NADP+ + NATP + hv produce O2 + 2 NADPH + 2 H+ + NADP + nPi d) 2 H20 + 2 NADPH + NADP + nPi + hv produce O2 + 2 NADP+ + 2 H+ + NATPWhat is photophosphorylation by oxidative phosphorylation? Explain by comparison.