Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 10, Problem 2TYK
Why is chlorophyll green?
a. It absorbs all wavelengths in the visible spectrum.
b. It absorbs wavelengths only in the red portions of the spectrum (680–700 nm).
c. It absorbs wavelengths only in the blue part of the visible spectrum (450–480 nm).
d. It absorbs wavelengths in only the blue and red parts of the visible spectrum.
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Which of the following statements is incorrect?a. Pigments absorb light of certain wavelengths only.b. Some accessory pigments are antioxidants.c. Chlorophyll is green because it absorbs green light.
The function of light reactions is to a. obtain CO2. b. make carbohydrate. c. convert light energy into a usable form of chemical energy. d. regenerate RuBP
The process of electrons passing energy to electrons in the neighboring pigment molecules
is known as.
A. Activation energy
B. Resonance
C. Photon transfer
D. Fluorescence
Chapter 10 Solutions
Biological Science (6th Edition)
Ch. 10 - 1. In antenna complexes, how is energy transferred...Ch. 10 - Why is chlorophyll green? a. It absorbs all...Ch. 10 - 3. What do the light-capturing reactions of...Ch. 10 - At what point in photosynthesis is the...Ch. 10 - 5. Why is the chlorophyll in chloroplasts less...Ch. 10 - Describe the three phases of the Calvin cycle and...Ch. 10 - Prob. 7TYUCh. 10 - 8. CAUTION Which process in plants generates the...Ch. 10 - Predict how the following conditions would affect...Ch. 10 - Prob. 10TYPSS
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- Approximately how much chlorophyll was present in the low-light plants after 24 hours? A. about 200 micrograms/g B. about 225 micrograms/g C. about 300 micrograms/g D. about 400 micrograms/garrow_forwardWhat is Photobleaching? A.When the fluorescence of a fluorophore becomes whiter due to too much light exposure. B.When a fluorophore does not emit fluorescence because it transmits the excitation energy to a fluorophore located very close. C.The decrease in the fluorescence intensity of a molecule in the presence of heavy metals. D.The irreversible loss of fluorescence of a molecule.arrow_forwardA. The C4 plant performs photosynthesis more efficiently than the C3 when the CO2 concentration is 600ppm or less. Provide one reason why the rate of photosynthesis doesn’t change for the C4 plant when the CO2 concentration increases above 400 ppm. B. Discuss what is happening in the C3 plant when the CO2 levels are below 50 ppm. Provide one reason why this does NOT happen to the C4 plant.arrow_forward
- The following essential oils are not phototoxic: Choose one answer. a. fig leaf absolute b. steam distilled citrus c. cold pressed citrus d. angelica rootarrow_forwardDefine the following terms: a. photosynthesis b. photosystem c. light harvesting antenna d. reaction center e. chlorophyllarrow_forwardIdentify which of the following statements is a lie? Select one: a. Even if plants have red leaves, they still perform photosynthesis. b. Photosynthesis is vital in plants to produce food and energy they need for growth and cellular respiration. Therefore, all plants need the same amount of sunlight to make enough food to grow. c. Aside from chlorophyll α and chlorophyll b in plants, plants also have carotenoids, which help plants absorb light energy for use in photosynthesis.arrow_forward
- 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 nmarrow_forwardIf a plant is removed from its natural environment and exposed to 100 percent CO2 composed of the radioisotope 14C, which of the following will not occur? Select one: a. The rate of photorespiration will remain unchanged. b. The sugars synthesized by the plant will be radioactive. c. The oxygen released will also be radioactive. d. All the carbon molecules in the RuBP molecules will eventually become 14C. e. Rubisco will eventually contain 14C.arrow_forwardThe graph represents the absorption spectrum of chlorophyll. How does this graph help to explain why leaves turn different colors in the fall?arrow_forward
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