EBK BIOLOGY
11th Edition
ISBN: 8220102797352
Author: Raven
Publisher: YUZU
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Chapter 38, Problem 6U
Summary Introduction
Introduction:
The photosynthesis is a process through which the plants produce carbohydrates using the carbon dioxide, water, and the radiant energy. The different plants have developed different process to fix the maximum carbon. The three types of photosynthetic cycles are photorespiration, Calvin cycle, and Hatch-Slack pathway.
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Which of the following descriptions about photorespiration is not correct?
Select one:
a. Rubisco binds O2 instead of CO2.
b. Carbon dioxide is released without producing ATP.
c. It limits damaging products of light reactions that build up in the absence of the Calvin cycle at low CO2 concentrations.
d. Peroxisomes and mitochondria rearrange and split the compound made by rubisco to fix CO2.
e. It occurs in hot and dry conditions.
Which substance is NOT present in Cyclic Electron Flow?
a.
Plastocyanin (PC)
b.
Cytochrome Complex
c.
Ferredoxin (Fd)
d.
Plastoquinone (PQ)
If 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.
Chapter 38 Solutions
EBK BIOLOGY
Ch. 38 - Which of the following is NOT found in topsoil? a....Ch. 38 - Prob. 2UCh. 38 - What proportion of the soil volume is occupied by...Ch. 38 - Which of the following is a micronutrient? a....Ch. 38 - Prob. 5UCh. 38 - Prob. 6UCh. 38 - a C4 plant, the Calvin cycle occurs in a. the...Ch. 38 - One potential problem with using poplars to remove...Ch. 38 - Prob. 1ACh. 38 - If you wanted to conduct an experiment to...
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- Which of the following are the products of the light reactions of photosynthesis. A. Glucose B. Water C. ATP D.NADP E. Light energy F. NADPH G. Carbon dioxide H. Oxygenarrow_forwardWhich of the following proteins is NOT involved in cyclic electron flow during the light reaction? A. ferredoxin B. plastocyanin C. photosystem I D. photosystem IIarrow_forwardWhich is NOT produced during the light-dependent reactions A. ATP B. Oxygen C. NADPH D. Sugararrow_forward
- 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.arrow_forwardWhich 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_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_forward
- The oxygen given off by photosynthesis comes froma. H2O. c. glucose.b. CO2. d. RuBP.arrow_forwardThe light dependent reactions of photosynthesis are characterized by A. oxidation of carbon dioxide, release of oxygen, synthesis of glucose. B. release of oxygen, fixation of carbon dioxide, hydrolysis of ATP. C. oxidation of water, reduction of NADP+ , hydrolysis of ATP. D. reduction of oxygen, oxidation of NADPH, formation of ATP. E. oxidation of water, reduction of NADP+ , formation of ATP.arrow_forwardWhich 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 productionarrow_forward
- Which of the following statements is/are FALSE? a.NADPH is formed in the stroma. b.The cyclic electron transport involves PSII only. c.pH gradient can be formed from the splitting of H2O. d.In the pH gradient, stroma is acidic and thylakoid space is basic.arrow_forwardIn the photosynthetic formation of ATP, the enzyme ATP synthase couples the synthesis of ATP to: A. the diffusion of protons B. the reduction of NADP+ C. the excitation of chlorophyll D. the reduction of chlorophyll E. CO2 fixationarrow_forwardIdentify which of the following statements is a lie? Select one: a. ATP is produced in dark reactions. b. Carbon fixation does not need light. c. Plant utilize carbon dioxide in order to produce oxygen.arrow_forward
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Photosynthesis & Respiration | Reactions | Chemistry | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=3XIyweZg6Sw;License: Standard YouTube License, CC-BY