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- What properties of photosynthetic pigments allow pigments to absorb light of only certain wavelengths? Select all that apply. Some pigment molecules lack a light-trapping region. Light of any energy level can boost an electron of the pigment molecule to a higher energy level in order to be absorbed. Only light with the correct wavelength to boost an electron of the pigment to a higher energy level is absorbed. All pigment molecules possess a light-trapping region with a special structure that allows electrons to move freely between its atoms.Chlorophyll is the green pigment found in plants. Which of the following statements can be implied regarding chlorophyll? O Chlorophyll does not absorb in the UV region. O Chlorophyll is made up of only C- H, C- C, C- N and C-O single bonds. O Chlorophyll uses the blue and red colors for photosynthesis. O Chlorophyll uses the green color for photosynthesis.Why do the reaction centers have different pigments rather than only the chlorophyls? quantitatively increasing the absorption photons narrowing coverage of the visible spectrum light increasing coverage of the visible spectrum light arranging light-harvesting complexe compensating for the high density of chlorophyll
- . List the parts of the light reactions that are proteins. List the parts of the light reactions that are not proteins. This question is in reference to photosynthesis.Can someone help me understand this. A student set up an experiment to show the effect of light color on photosynthesis in Elodea plants. She filled two test tubes with distilled water and placed a piece of Elodea in each of the tubes. She added a drop of phenol red, which turns red in a basic solution and yellow in an acidic solution. She blew in each tube before placing the volumeters on the top of the tube. Why did she blow into the tube? to add oxygen to the tube to add carbon dioxide to the tube to add carbohydrates to the tube to add sodium bicarbonate to the tubeThe distinctly blue shade of a blue spruce results from the scattering of light by small waxy particles that coat the leaves. Explain how this scattering can protect the leaves from damage by short-wavelength ultraviolet light while still permitting the passage of longer wavelengths of light for photosynthesis.
- To assess photosynthesis, we relied heavily on a spectrophotometer to measure the color intensity of DCPIP in our solution. We set the spectrophotometer at wavelengths in the visible spectrum. What is the approximate wavelength range (in nm) for the visible spectrum? For example, the ultraviolet spectrum wavelength range is approximately 10-400 nmThe green color of plants is explained by the wavelengths of light that are reflected, transmitted, and absorbed by the chlorophylls in the thylakoids. Which of the following statements is true? Plants appear green because chlorophylls reflect and transmit yellow and green wavelengths of light, and absorb red and violet-blue wavelengths of light. Plants appear green because chlorophylls reflect and transmit red and blue wavelengths of light, and absorb yellow and green wavelengths of light. Plants appear green because chlorophylls reflect and transmit red and blue wavelengths of light, and absorb white wavelength of light. Plants appear green because chlorophylls reflect and transmit white wavelength of light, and absorb red and violet-blue wavelengths of light.Cells are open systems that exchange matter and energy with their surroundings. Which of the following best explains why plant cells require sunlight to make organic compounds, according to Gibbs’s theory of free energy? The photosynthetic reaction releases free energy to the surroundings. The photosynthetic reaction’s free energy is in equilibrium. The reactants of photosynthesis have less free energy than the products. The change in free energy (∆G) of the photosynthetic system is less than zero.
- In the light reactions of photosynthesis, electrons within the pigment molecules that are embedded in the plasma membranes of the thylakoids are hit by photons of sunlight. This dramatically increases the energy in these electrons. When photons of light strike electrons in other kinds of molecules, the electrons are raised to high energy levels, but immediately drop back down to their ground states, re-emitting the photons. However, in the light reactions, an excited electron is passed to an electron acceptor molecule before it can drop back down to its ground state. The excited electron is then passed from the primary electron receptor to the electron transport chain and eventually ends up as part of a glucose molecule. If the pigments in the thylakoid are continually passing their electrons to other molecules, how do the pigments replace their missing electrons? To replace the missing electrons, an enzyme removes the two hydrogen atoms from a water molecule.…You recently join a lab where professor is looking for photosystem of plants. He told you to isolate chloroplast and look for the photosystem II. Please select the correct sequence of events you are going to perform. options: Homogenize leaves à differential centrifugation à Fractional Solubilization à Affinity purification Homogenize leaves à Fractional Solubilization à differential centrifugation à Affinity purification Differential centrifugation à Homogenize leaves à Fractional Solubilization à Affinity purification Affinity purification à differential centrifugation à Fractional Solubilization à Homogenize leavesxygen Production Your experimental team has gathered data on the rate of a plant's photosynthesis, measured by oxygen production, as the light intensity was increased. The graph below was created from your gathered data. Note: Diagram 4 may also be helpful in answering the questions. Use the information in order to answer questions #28 -31. Diagram 7: Rate of Photosynthesis with increasing light intensity 200 - Pmax 150 - 100 - 50 50- -100 100 200 300 400 500 600 700 Light Intensity (arbitrary units) Glossary: 1. Pmax: The maximum pressure of oxygen gas. 2. Arbitrary units: The use of this term mean the graph is not using specific units as labels. Light intensity could be measured in lumens and oxygen production could have been measured in mm of Hg Select the best explanation for the oxgen production leveling off as the light increases in intensity. More light reduces the activity of the chlorophyll by breaking the pigment down. More light prevents water from getting to the leaf cells…