Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, 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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- The graph above illustrates the absorption spectrum of chlorophyll a ONLY. Which colors of the visible light spectrum are absorbed best by chlorophyll a?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_forwardThe following essential oils are not phototoxic: Choose one answer. a. fig leaf absolute b. steam distilled citrus c. cold pressed citrus d. angelica rootarrow_forward
- Define 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_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_forward
- The graph represents the absorption spectrum of chlorophyll. How does this graph help to explain why leaves turn different colors in the fall?arrow_forwardWhich of the following is true of light-independent reactions of photosynthesis? Select all that apply. a. Light-independent reactions occur in the stroma. b. Water molecules are split during light-independent reactions. c. Chlorophyll absorbs energy from sunlight. d. Carbon dioxide is necessary for light-independent reactions.arrow_forwardA researcher decides to isolate thylakoid membranes and add protons to the space inside the thylakoids by soaking the thylakoids in acetic acid, which diffuses through the membrane, and then washing the thylakoids very quickly. What will happen? A. The scheme will run in reverse. B. ATP will be able to be made without light. C. Light will be emitted by the thylakoids. D. The membranes will dissolve.arrow_forward
- The denaturation temperature of rubisco in a certain plant was determined to be 76.2 degrees Celsius. What happens to the rate of photosynthesis if the temperature continues to increase? A. The rate of photosynthesis will increase. B. The rate of photosynthesis will decrease. C. The rate of photosynthesis will remain the same. D. The rate of photosynthesis will decrease, then increase.arrow_forwardWhen you need to write texts in drawing please use typing not your hand writing.arrow_forwardWhat 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.arrow_forward
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