Campbell Biology: Concepts & Connections (8th Edition)
8th Edition
ISBN: 9780321885326
Author: Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 7TYK
Why is it difficult for C3 plants to carry out photosynthesis in very hot, dry environments such as deserts?
a. The light is too intense and destroys the pigment molecules.
b. The closing of stomata keeps CO2 from entering and O2 from leaving the plant.
c. They must rely on photorespiration to make ATP.
d. CO2 builds up in the leaves, blocking carbon fixation.
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Students have asked these similar questions
Plants where light independent reactions take place in the same cells as light dependent reactions (mesophyll cells) are using which kind of photosynthesis?
A. C3 only
B. C4 only
C. Either C3 or CAM
D. Either C3 or C4
Some plants are able to survive in hot, dry climates like the desert. What is the name of their photosynthetic process?
A. Noncyclic photophsophorylation
B. C4 Photosynthesis
C. C3 Photosynthesis
D. Carbon fixation
What is the BEST explanation for why thylakoid membranes are flat and stacked?
A. to fit more into a chloroplast
B. to increase surface area for light absorption and cross-
membrane traffic
C. to increase the color of the leaf as camouflage from herbivores
D. to hold more ATP
Chapter 7 Solutions
Campbell Biology: Concepts & Connections (8th Edition)
Ch. 7 - Complete this summary map of photosynthesis.Ch. 7 - In photosynthesis, __________ is oxidized and...Ch. 7 - Which of the following are produced by reactions...Ch. 7 - When light strikes chlorophyll molecules in the...Ch. 7 - The reactions of the Calvin cycle are not directly...Ch. 7 - Which of the following does not occur during the...Ch. 7 - Why is it difficult for C3 plants to carry out...Ch. 7 - How is photosynthesis similar in C4 plants and CAM...Ch. 7 - Compare and describe the roles of CO2 and H2O in...Ch. 7 - Explain why a poison that inhibits an enzyme of...
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- Plants produce oxygen when they photosynthesize. Where does the oxygen come from? a. splitting water molecules b. ATP synthesis c. the electron transport chain d. chlorophyllarrow_forwardClosed stomata ________. a. limit gas exchange c. prevent photosynthesis b. permit water loss d. absorb lightarrow_forwardPhotorespiration becomes more likely when a. CO2 concentrations are high in leaf cells. b. stomata remain closed in C3 plants. c. glucose concentrations are low in leaf cells. d. ATP binds to rubisco.arrow_forward
- Which of the following options best explains how less chlorophyll would affect the proces of photosynthesis in plants? 6. A. It would increase the rate of photosynthesis because of the increased production of food. B. It would limit the amount water plants are able to take in, resulting in a slower rate of photosynthesis. C. It would increase the production of oxygen because the plant would need to work hard to feed themselves. С. D. It would limit the amount of light absorbed by the plant and decrease the amount of food the plant is able to produce for itself.arrow_forwardThe role of photosystem 1 and photosystem 2 in the process of photosynthesis is to a. absorb sunlight and distribute the energy as heat b. absorb sunlight and transfer the energy to electrons c. form ATP as hydrogen ions cross the thylakoid membrane d. transfer electrons to form NADPHarrow_forwardWhich molecule conveys protons from the chloroplast stroma into the thylakoid lumen? a. cytochrome b6-f b. plastocyanin c. phytochrome d. cytochrome c e. oxygenarrow_forward
- 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.arrow_forwardWhich of the following is True?a. Chloroplasts are found primarily in leaf mesophyll cells.b. The space between the outer and inner membranes chloroplasts is called the thylakoid space.c. Mesophyll cells in the leaf’s center are packed tightly together.d. Vascular bundles of the leaf circulate CO2 and O2.arrow_forwardThe figure below shows the concentration of glucose for a 24-hour period on both the process of photosynthesis (blue) and cellular respiration (red dashed lines). What explains the increase of respiration rate during the day? a. Enzymes are active during the day. b. Glucose production has increased due to photosynthesis. c. More energy is required to transport water and phloem sap and to dissipate heat. d. All of the above.arrow_forward
- To which of the two lighting conditions would you expose seedlings if you wanted to maximize the rate of photosynthesis in the plants as well as minimizing your costs for electricity to light the plants in the greenhouse? A. Low light only. B. Moderate light only. C. Low light for the first 12 hours and then moderate light afterwards. D. Moderate light for the first 12 hours and then low light afterwards.arrow_forwardWhat will the pH in the space inside the thylakoid membrane be? A. 2 B. acidic C. neutral D. basicarrow_forwardWhere in plant cells does the Calvin cycle take place? a. thylakoid membrane b. thylakoid space c. stroma d. granumarrow_forward
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