Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 7, Problem 3MC
Summary Introduction
Introduction:
Photosynthesis is a process in which chloroplasts capture light energy from the sun and converts it into chemical energy of food. This energy is further used as food or stored as sugar in the plant. Chloroplasts are found primarily in the leaves.
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Check out a sample textbook solutionStudents have asked these similar questions
Why do land plants have stomates (sometimes called stomata)?
a. To allow plants to take in carbon dioxide from the atmosphere.
b. All of the choices are true; none are false.
c. To control water loss while allowing for the uptake of some raw materials of photosynthesis.
d. They allow the plant to have some control over transpiration rates.
Which of the following changes would decrease ATP production in the light-dependent reactions of photosynthesis?
a.
decreasing the pH of the thylakoid lumen
b.
decreasing the pH of the chloroplast stroma
c.
increasing the concentration of NADP+ in the chloroplast stroma
d.
making the thylakoid membrane freely permeable to protons by adding a proton channel
e.
two of the above would decrease ATP production
If you could measure pH within a chloroplast, where would it be lowest?
a. In the stroma
b. In the lumen of the thylakoid
c. In the cytoplasm immediately outside the chloroplast
d. In the antenna complex
Chapter 7 Solutions
Biology
Ch. 7.1 - What chemical reactions allow plants to capture...Ch. 7.1 - explain why photosynthesis is important?Ch. 7.1 - diagram the structure of leaves and chloroplasts...Ch. 7.1 - write out and explain the basic equation for...Ch. 7.1 - summarize the main events of the light reactions...Ch. 7.2 - You continuously monitor the photosynthetic oxygen...Ch. 7.2 - Prob. 1HYEWCh. 7.2 - What reactions allow plants to store the...Ch. 7.2 - list the light capturing molecules in chloroplasts...Ch. 7.2 - diagram and describe the molecules within the...
Ch. 7.2 - Prob. 3CYLCh. 7.3 - Prob. 1TCCh. 7.3 - describe the function of the Calvin cycle and...Ch. 7.3 - list the three stages of the Calvin cycle,...Ch. 7.3 - describe the fate of the simple sugar G3P...Ch. 7.3 - Prob. 2TCCh. 7.3 - What global policy changes and what individual...Ch. 7 - Which of the following is True? a. Photosynthesis...Ch. 7 - The Calvin cycle a. can only occur when light is...Ch. 7 - Prob. 3MCCh. 7 - Prob. 4MCCh. 7 - Which of the following is False? a. Photosystem II...Ch. 7 - Prob. 1FIBCh. 7 - Chlorophyll a captures wavelengths of light that...Ch. 7 - Prob. 3FIBCh. 7 - Prob. 4FIBCh. 7 - Light reactions generate the energy-carrier...Ch. 7 - Explain what would happen to life if...Ch. 7 - Prob. 2RQCh. 7 - Draw a simplified diagram of a leaf cross-section...Ch. 7 - Draw a simplified diagram of a chloroplast and...Ch. 7 - Prob. 5RQCh. 7 - Prob. 6RQCh. 7 - Suppose an experiment is performed in which plant...Ch. 7 - Prob. 2ACCh. 7 - Assume you want to add an accessory pigment to the...
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- Photosynthesis generally takes place in which parts of the plant? A. Leaf and other chloroplast bearing parts B. stem and leaf C. Roots and chloroplast bearing parts D. Bark and leafarrow_forwardWhere is chlorophyll located in the chloroplast? (a) thylakoid membranes (b) stroma (c) matrix (d) thylakoid lumen (e) between the inner and outer membranesarrow_forwardWhich of the following is the major site of photosynthesis? a. apical meristem b. ground tissue c. xylem cells d. phloem cellsarrow_forward
- Closed stomata ________. a. limit gas exchange c. prevent photosynthesis b. permit water loss d. absorb lightarrow_forwardWhich of the following is NOT true about the structure of chloroplasts? A) The thlakoid membranes are continuous with the intermembrane space B) The network of thylakoids within a chloroplast are one continuous space C)Thylakoids of the chloroplast developed due to the invagination of the inner plastid membrane D) All of these are true about chloroplast structure. E) Chloroplasts are considerably larger than mitochondriaarrow_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
- Using the graph comparing photosynthetic rate and absorption of different wavelengths of light, what can be concluded? a) The photosynthesis rate at 550 nm is the highest b) Chlorophyll a absorbs wavelengths at both ends of the spectrum c) Chlorophyll b is associated with the greatest rate of photosynthesis. d) Carotenoids absorb the narrowest range of wavelengths of lightarrow_forwardIf a leaf disc is exposed to light but not to CO2, why would it not produce enough O2 to float?arrow_forwardWhich cells are responsible for the movement of photosynthates through a plant? a. tracheids, vessel elements b. tracheids, companion cells c. vessel elements, companion cells d. sieve-tube elements, companion cellsarrow_forward
- Considering the leaf structure of a vascular plants, which of the following does not contain chloroplast A. The plalisade B. The spongy mesophyll C. The epidermis D. The guard cellarrow_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_forwardMany scientists are concerned because CO2 levels in the atmosphere appear to be increasing. If this happens, how do you think plants and the atmosphere will affect each other? Make sure you include both respiration and photosynthesis in your answer.arrow_forward
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