If photosynthesizing plants are grown in thepresence of 14CO2, is every carbon atom of the glucose that is produced labeled with the radioactive carbon? Why or why not?
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: The first product synthesized from photosynthesis in C4 plants is: Select one: O malate. O…
A: Answer is option a.) Malate.
Q: In the Calvin cycle, 3-phosphoglycerate is reduced to: Select one: O glyceraldehyde 3-phosphate. O…
A: Calvin cycle is divided into three stages, which are Carbon fixation, reduction of carbon molecules,…
Q: Despite the enormous amount of solar energy that plants are exposed to, photosynthesis is only able…
A: Photosynthesis is the physiological reaction in plants that occurs in the presence of sunlight,…
Q: 26. Two photosystems of any chloroplast need to cooperate for non-cyclic phosphorylation. Which…
A: Hi dear, here's your answer what you want.Ofcourse giving the best answer I'm just giving a brief…
Q: Absorbance of chlorophyll a Rate of photosynthesis --- 7) Use the following figure to answer the…
A: Action spectrum of photosynthesis gives the rate of photosynthesis plotted against the wavelength of…
Q: What is the percentage of this energy conserved in NADPH for the production of one mole of oxygen?…
A: The electron transport chain (ETC). NADH feeds in reducing equivalents at the beginning of the ETC,…
Q: Thylakoids were isolated from chloroplasts and incubated in the dark in an acidic solution (pH 4) to…
A: ATP or Adenosine Tri-Phosphate is the chemical compound that is considered as the energy currency…
Q: Describe cyclic and non cyclic photo phosphorylation. Include all the steps
A: Please follow step 2 for detailed explanation.
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: Despite CAM photosynthesis having a comparatively higher water use efficiency relative to C3 and C4…
A: CAM pathway is adapted in plants to perform photosynthesis under stress. The CAM pathway reduces…
Q: 38) The difference between P700 and P680 is that A) The concentration of chlorophyll molecules is…
A: Oxygenic photosynthetic organisms like plants, cyanobacteria possess two types of photosystem: PSI…
Q: Explain why both starch synthesis and the activity of the Triose-P Phosphate translocator serve to…
A: Chloroplasts are organelles in plant and algal cells that perform photosynthesis, in which the…
Q: Four species in the Chenopodiaceae were found to have one cell C4 photosynthesis. Givee 3…
A: Special leaf anatomy enables carbon dioxide to accumulate in 'bundle sheath' cells around Rubisco…
Q: 48. If the thylakoid membrane became leaky to ions, what would you predict to be the result on the…
A: The thylakoid is a small membrane bound disc-shaped compartment inside the chloroplast of plants and…
Q: . It is believed that the ratio of cyclic photophosphorylation to noncyclic photophosphorylation…
A: Introduction: The way toward using light energy from photosynthesis to change ADP over to ATP is…
Q: ts are still photoautotrophic and so contain all of the expected components of cosynthesis. Explain…
A: The answer is given below
Q: The function of the _____________ complex in photosynthesis is similar to the Q cycle in…
A: Cytochrome complex.
Q: After one turn of the Calvin cycle in a C3 plant,where would you expect to find the radioactive…
A: The Calvin cycle (C3) is considered as the process which occurs in a plant that is used for the…
Q: Is it reasonable to list standard reduction potentials (see Chapter 20) for the reactions of…
A: Photosynthesis is the process used by plants and other organisms to convert light energy into…
Q: If you could replace all of the plant ATP synthase with ATP synthase enzymes from animal cells,…
A: Chemiosmotic hypothesis explains the mechanism by which ATP is synthesized by the ATP synthase…
Q: 43) Which of the following is false? A) C3, C4, and CAM plants use the light dependent reactions to…
A: The C3 plants are the plants that fix carbon dioxide via the C3 cycle using the RUBISCO enzyme,…
Q: Not all plants have leaves that are green. Zebrina sp. has purple leaves. However, these plants are…
A: The plants are formed of roots, stem, leaves, fruits and flowers. The conduction system in plants is…
Q: In chloroplasts, a greater pH gradient across the thylakoid membrane is required to power the…
A: The chlorophyll acquires its electrons from water by creating oxygen as a result. During the…
Q: Chloroplast ATP synthase contains 14 c subunits. How many protons must be translocated to the…
A: In the process of photosynthesis, the protons are pumped into the thylakoid lumen, which results in…
Q: β -Carotene is a carotenoid that mammals can use as a source of vitamin A. What is the function of…
A: Carotenoids are pigments present plants, algae, etc. These pigments provide bright yellow to orange…
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: What would be the effect on production of ATP from photosynthesis, assuming no effect on…
A: Photosynthesis is a method utilized by plant life and different organisms to convert mild…
Q: Imagine a leaf in bright light but an atmosphere with no carbon dioxide. Would RuBP carboxylase be…
A: Introduction Rubisco stands for Ribulose 1,5- Bisphosphate Carboxylase/Oxygenase. It has dual…
Q: Please state if the statements are true or false. 1. An l-sugar is a sugar where the -OH in the…
A: Sugar is also called a carbohydrate. Carbohydrates are composed of carbon, hydrogen, and oxygen in…
Q: 25/ 50 Which of the folkmings not true about near electron flow? A Photosystems I ll are involved B…
A: The chloroplast is involved in the process of photosynthesis. The light dependent phase and Calvin…
Q: 26. Two photosystems of any chloroplast need to cooperate for non-cyclic phosphorylation. Which…
A: Thanks for your question LIGHT HARVESTING COMPLEX: Chlorophyll pigments are organised into 2…
Q: Why is a hypotonic buffer used for the resuspension? 1.DCPIP passes easily across the intact…
A: The lysis of adherent and suspended cells is facilitated by the hypotonic buffer. The presence of…
Q: Hxation pathways in plant. Oxaloacetate Pyruvate Cycle D RUBP Cycle E Sugar FIGURE 1 (a) Name the…
A: The process of photosynthesis occurs in all types of plants which involves the formation of sugar…
Q: What would be the effect on production of NADPH from photosynthesis, assuming no effect on…
A: The NADPH is produced due to electron transport in the light reaction of photosynthesis. At the…
Q: Blue-green algae (cyanobacteria) form heterocysts when deprived of ammonia and nitrate. In this…
A: Photosynthesis is defined as the process by which autotrophs, including green plants and…
Q: Photorespiration can decrease soybean's photosynthetic output by about 50%. Would you expect this…
A: Photorespiration is a process in plant metabolism which is also called as oxidative photosynthetic…
Q: During photosynthesis where does the primary electrons come from that enter photosystems II? What is…
A: The photosynthesis is the process by which simple sugar (glucose) is produced by using the sunlight,…
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: Predict the effect of the herbicide dichlorophenyldimethylurea (DCMU) on a plant’s ability to…
A: Introduction: DCMU (3-(3,4-dichlorophenyl)-1,1-dimethylurea) is an aryl urea algaecide and herbicide…
Q: The endergonic conversion of malate to OAA in TCA cycle ( DGO of + 7.1 kcal/mol) is driven in the…
A: Given values: ∆G° for malate to oxaloacetate = +7.1 kcal/mol ∆G° for citrate synthase reaction =…
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: Not all plants have leaves that are green. Zebrina sp. has a purple leaves. However, these plants…
A: Photosynthesis is a crucial step in the life cycle of autotrophic organisms, in which solar energy…
Q: Suppose that you made some wine whose alcohol content was 10% w/v(i.e., 10 g of ethanol per 100 mL…
A: The process of wine fermentation needs careful control for the high quality production of wines.…
If photosynthesizing plants are grown in the
presence of 14CO2, is every carbon atom of the glucose that is produced labeled with the radioactive carbon? Why or why not?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- The Relative Efficiency of ATP Synthesis in Noncyclic versus Cyclic Photophosphorylation If noncyclic photosynthetic electron transport leads to the translocation of 7 H+/2e- and cyclic photosynthetic electron transport leads to the translocation of 2 H+/e-, what is the relative photosynthetic efficiency of ATP synthesis (expressed as the number of photons absorbed per ATP synthesized) for noncyclic versus cyclic photophosphorylation? (Assume that the CF1CF0-ATP synthase yields 3 ATP/14 H+.)The herbicide dinoseb, which was removed from the market many years ago, killed plants by uncoupling oxidative phosphorylation. Ironically, plants have embedded in the inner membrane of their mitochondria a protein named the “uncoupling protein” that essentially can carry out the same process caused by dinoseb. The mechanism of uncoupling oxidative phosphorylation involves which of the following scenarios. A. Excess electrons oxidize lipids in the mitochondrial membranes, thus destroying the electron transport chain B. Excessive oxygen is consumed via reduction to water, thus depriving the mitochondria of the ability to carry out phosphorylation that requires oxygen C. The membrane selectivity required to maintain a proton gradient is altered so the potential for driving ATP synthesis via chemiosmosis is degraded D. Uncoupling oxidative phosphorylation kicks a cell into a fermentative pathway that cannot supply sufficient ATPThe first amino acid in protein synthesis in the chloroplast is N-formyl methionine. What is the significance of this fact?
- Why does the presence of proteorhodopsin enable phototrophy but not photosynthesis by SAR11?The photosynthetic process used by the green sulfur bacteria, under anaerobic conditions, is best represented by which of the following balanced equations? cell bio 6CO2 + 12H2S C6H12O6 + 6S2 + 6H2O C6H12O6 + C6H12O6 C12H22O11 + H2O 6CO2 + 12H2O C6H12O6 + 6O2 + 6H2O C12H22O11 + H2O C6H12O6 + C6H12O6 C6H12O6 + 6O2 + 6H2O 6CO2 + 12H2OGlyceraldehyde 3-phosphate dehydrogenase in chloroplasts uses NADPH to participate in the synthesis of glucose. In gluconeogenesis in the cytoplasm, the isozyme of the dehydrogenase uses NADH. Why is it advantageous for the chloroplast enzyme to use NADPH?
- 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?Explain why both starch synthesis and the activity of the Triose-P Phosphate translocator serve to maintain the ability of the chloroplast to maintain high photosynthetic rates.Example 14.6 The oxygen requirement for cell growth in glueose can be represented by the following equation (Mateles, 1971) 32NC+8(Nh2)+16(No2) Fx/sM +yo2 – 2.67yc + 1.714YN2 – 8y H2 ro2 = In which ro2 is the oxygen required for each gram of cells produced, N stands for no. of atoms present in each molecule substrate, y stands for mass fractions and M is the MW of the substrate. The yeast cell may be considered to be CH1.800.5NO.2. Calculate rO2 if the yield factor (Yx/s) is 0.46g of cells produced for each gram of substrate consumed.
- Of course, one cannot stick a piece of tape to each carbon atom in the actual glucosemolecule. But one can do the next best thing: use radioisotopes to trace themovement of various atoms. Specifically, because carbon dioxide is a gas, usingradioactive C-14 allows for the easy detection of the 14CO2 that is given off.Suppose you introduce one glucose molecule that has had all of its carbons radioactivelylabeled. Suppose further that each step in glycolysis and in the citric acid cycle takes oneminute to complete (so glycolysis, for instance, takes ten minutes to complete, theconversion to acetyl CoA takes one minute, and the citric acid cycle takes eight minutes).Draw a plot of time (x-axis) versus radioactivity detected by a gas sensor (y-axis). Labelthe x-axis with enough time increments so it is clear at what minute the radioactivitywas detected. Use differing peak heights to give an indication of the amount ofradioactivity detected at that point.We humans do not express an alpha-Galactosidase enzyme and therefore cannot break down stachyose but the bacteria that live in our large intestine can. These bacteria contain an alpha-Galactosidase enzyme that hydrolyzes the galactopyranosyl-alpha (1-6) glycosidic bonds. The bacteria then ferment the products to generate the gas that is famously associated with eating beans. Draw the Haworth projections of the products of alpha-Galactosidase catalyzed reaction. Name the products of this enzyme catalyzed reaction.What is the role of the aspartate 118 residue in the Human inorganic Pyrophosphatase mechanism? include a drawing of the mechanistic proposal.
