Biology Today and Tomorrow without Physiology (MindTap Course List)
5th Edition
ISBN: 9781305117396
Author: Cecie Starr, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 5, Problem 4SQ
Summary Introduction
Concept introduction: In the plant cells, two types of reactions take place as part of photosynthesis: light-dependent reactions (light reactions) and light-independent reactions (dark reactions). The products of light-dependent reactions are nicotinamide adenine dinucleotide phosphate hydrogen (NADPH) and adenosine triphosphate (ATP). The above mentioned products (NADPH and ATP) are used in light-independent reactions.
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In the light-dependent reactions,______ . a. carbon dioxide is fixed c. CO2 accepts electrons b. ATP forms d. sugars form
Animal cells conduct:
A. Cellular Respiration
B. Photosynthesis
C. Both
Plant cells conduct:
A. Cellular Respiration
B. Photosynthesis
C. Both
When a photon of light energy reaches a reaction center chlorophyll
molecule, what becomes excited?A. a molecule of water vapor C. an atom of oxygenB. a carbon dioxide molecule D. an electron
Chapter 5 Solutions
Biology Today and Tomorrow without Physiology (MindTap Course List)
Ch. 5 - Biofuels A lot of energy is locked up in the...Ch. 5 - Biofuels A lot of energy is locked up in the...Ch. 5 - Biofuels A lot of energy is locked up in the...Ch. 5 - Most of the carbon that land plants use for...Ch. 5 - Prob. 2SQCh. 5 - Which of the following statements is incorrect? a....Ch. 5 - Prob. 4SQCh. 5 - Prob. 5SQCh. 5 - Prob. 6SQCh. 5 - Prob. 7SQ
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- In ________, electrons that have been energized by light contribute their energy to add phosphate to ADP, producing ATP. (a) crassulacean acid metabolism (b) the Calvin cycle (c) photorespiration (d) C4 pathways (e) photophosphorylationarrow_forwardThe Calvin-Benson cycle starts with _______. a. the absorption of photon energy b. carbon fixation c. the release of electrons from photosystem II d. NADP+ formationarrow_forwardCarbon dioxide is required for which of the following processes in photosynthesis? a) the Calvin cycle b) the splitting of water c) the absorption of water d) the production of ATP e) the light reactionarrow_forward
- Without carbon dioxide, which part of photosynthesis could not proceed? A) light-dependent reactions B) Calvin cycle C) photosystem I D) photosystem II E) electron transportarrow_forwardWhich of the following is not a pigment that aids in photosynthesis? a.) electrons b.) chlorophyll a c.) caotenoidsarrow_forwardThe oxygen given off by photosynthesis comes froma. H2O. c. glucose.b. CO2. d. RuBP.arrow_forward
- How are the NADPH and G3P molecules made during photosynthesis similar? a. They are both end products of photosynthesis. b. They are both substrates for photosynthesis. c. They are both produced from carbon dioxide. d. They both store energy in chemical bonds.arrow_forwardThe overall flow of electrons in the light reactions is from a. antenna pigments to the reaction center. b. H2O to CO2. c. photosystem I to photosystem II. d. H2O to NADPH.arrow_forwardSome people say that plant cells carry out photosynthesis and animal cells carry out respiration. Do you agree or disagree with this statement?arrow_forward
- When is oxygen produced during photosynthesis? a. light reation alone b. light reation and calvin cycle c.neither the light reaction and calvin cycle d. the calvin cycle alonearrow_forwardWhen oxygen gas is released as a result of photosynthesis, it is a direct byproduct of what process? a. splitting of water molecules b. the electron transfer system in the photosystems c. chemiosmosis d. reducing of NADP+arrow_forwardThe atoms in oxygen molecules released during photosynthesis come from_____ . a. sugars b. water c. O2 d. CO2arrow_forward
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