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.

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.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter20: The Protists

Section: Chapter Questions

Problem 4CT: Melvin Calvin and Andrew Benson determined the steps in the light-independent reactions of...

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Which of the following best describes the products of the photochemical reactions of photosynthesis?A) NADH and ATP are made in the stromaB) NADPH and ATP are made in the stromaC) NADH and ATP are made in the thylakoid lumenD) NADPH is made in the stroma and ATP is made in the thylakoid lumenE) NADPH and ATP are made in the thylakoid lumen
What is the overall outcome of the light reactions in photosynthesis? NADPH and ATP molecules are produced during the light reactions and are used to power the light independent reactions. NADPH and ATP molecules are produced during the light reactions, which are used to power the light dependent reactions. Sugar and ATP are produced during the light reactions, which are used to power the light independent reactions. Carbon dioxide and NADPH are produced during the light reactions, which are used to power the light dependent reactions.
In photosynthesis, which of the following is NOT true about the light-dependent (“light”) reaction? In photosynthesis, which of the following is NOT true about the light-dependent (“light”) reaction? Glucose is synthesized from CO2 and water during the light-dependent reaction The light-dependent reaction converts light energy to chemical energy stored in ATP The light-dependent reaction (non-cyclic) captures electrons in NADPH Light-excited electrons in chlorophyll provide the energy for ATP production None of the other four answers (All are true of the light-dependent reaction)
1. Jiro is performing an experiment on photosynthesis using Hydrilla plants. He wants to know which light spectrum would facilitate faster photosynthetic rate. He asked Elea and Nina to help him plan and set-up the experiment. Elea plans to test four light spectra by using four different colored light bulbs accordingly. Nina said they need two controls, one without light source and one under natural light for comparison. They will be using Bromothymol Blue, a color changing carbonic acid indicator as a substrate for the Hydrilla. This indicator, which is originally blue in color, changes to yellow when infused with carbon dioxide and forming carbonic acid. The assumption is that when the Hydrilla plant submerged in the indicator starts to photosynthesize, it will slowly turn the yellow color (previously infused with carbonic acid through blowing carbon dioxide into the solution) back to blue as plants use carbon dioxide during the process. They will check which of the setups will…
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 nm
Which of the following is NOT true of photosynthesis? Light-excited electrons in chlorophyll provide the energy for ATP production The light-independent (“dark”) reaction makes glucose from carbon dioxide (CO2) and water, using energy trapped by the light-dependent reaction The light-dependent reaction captures electrons in NADPH, which are used for glucose synthesis in the light-independent (“dark”) reaction The light-independent (“dark”) reaction converts light energy to chemical energy stored in ATP None of the other four answers (all are true of photosynthesis)
Photosystems are essential to the light reactions. Which of the following is true about photosystems? a) Photosystems are embedded within membranes, across which they create a proton gradient. b) Photosystems work together to absorb light over a larger surface area than could be possible from just one pigment molecule working alone. c) Photosystems are composed of proteins and pigment molecules. d) All of the above
Which of the following statements about photosynthesis is NOT true? Light independent reactions are very similar to the electron transport chain of cellular respiration Light is absolutely essential for both aspects of photosynthesis In order replace electrons, water is split to form oxygen gas Light dependent reactions are very similar, but in reverse, to the Krebs cycle and glycolysis
What are the roles of ATP and NADPH in photosynthesis? a. ATP and NADPH are forms of chemical energy produced from the light dependent reactions to be used in the light independent reactions that produce sugars. b. ATP and NADPH are forms of chemical energy produced from the light independent reactions, to be used in the light dependent reactions that produce sugars. c. ATP and NADPH are forms of chemical energy produced from the light dependent reactions to be used in the light independent reactions that produce proteins. d. ATP and NADPH are forms of chemical energy produced from the light dependent reactions to be used in the light independent reactions that use sugars as reactants.
What is the difference between resonance energy transfer and photoinduced charge separation? In photoinduced charge separation, an excited electron moves from accessory pigments to the light-harvesting complex. In resonance energy transfer, an excited electron is transferred to a nearby molecule. Photoinduced charge separation of pigments in the light-harvesting complex drives the resonance energy transfer in a reaction center. In resonance energy transfer, the energy of electron excitement is transferred only to an appropriate acceptor. Resonance energy transfer from pigments of a light-harvesting complex drives the photoinduced charge separation in a reaction center.
Which of the following statements about the light reactions of photosynthesis are correct? 1. Absorption of light does one thing: it makes chlorophyll easier to oxidize. 2. In PSII, the rate of damage to the D1 protein can never exceeds the rate of repair. 3. Electron transport is spontaneous (exergonic) as electrons move from P680* to P700+. 4. Compared to anoxygenic photosynthesis, in oxygenic photosynthesis less light needs to be absorbed to reduce NADP+. A. 1,2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1,2,3 and 4 are correct
Which of the following is produced during the light reactions of photosynthesis? C6H12O6 CO2 O2 ADP