Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 8, Problem 6RQ
In which compartment of the plant cell do the light- independent reactions of photosynthesis take place?
- thylakoid
- stroma
- outer membrane
- mesophyll
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A damage in the thylakoid membrane
caused the protons to leak into the
stroma. Which of the following processes
will be most affected? *
synthesis of ATP
splitting of water
absorption of light energy by chlorophyll
flow of electrons from PSII to PSI
The Calvin cycle (light-independent reaction) occurs in the
Matrix
Xylem
Cristae membrane
Stroma
Thylakoid membrane
Diagram 41 The Light Reactions of Photosynthesis
STROMA
Poteyte
Potayate
mples
HAD
Light
HLARO ACE
(high ir
Carto
Thylakold
membrane
ATP
ynthase
STROMA
ow N concentration)
ADP
Diagram 4 shows a single thylakoid membrane taken from a chloroplast inside of a leaf cell. The events of
the light dependent cycle that take place along the thylakoid membrane are shown.
Identify an energy transfer that takes place n Diagram 4.
Light energy is directly transferred into the chemical bonds of sugar.
O Light energy is directly transferred into the chemical bonds of ATP
The energy of the bonds of water are transferred into the chemical bonds of ATP.
The energy from an excited electron is transferred into the chemical bonds of NADPH.
Chapter 8 Solutions
Biology 2e
Ch. 8 - Figure 8.6 On a hot, dry day, plants close their...Ch. 8 - Figure 8.16 What is the source of electrons for...Ch. 8 - Figure 8.18 Which of the following statements is...Ch. 8 - Which of the following components is nor used by...Ch. 8 - What two main products result from photosynthesis?...Ch. 8 - In which compartment of the plant cell do the...Ch. 8 - Which statement about thylakoids in eukaryotes is...Ch. 8 - Predict the end result if a chloroplast’s light-,...Ch. 8 - How are the NADPH and GA3P molecules made during...Ch. 8 - Which of the following structures is not a...
Ch. 8 - How many photons does it take to fully reduce, one...Ch. 8 - Which complex is not involved in the establishment...Ch. 8 - From which component of the light-dependent...Ch. 8 - Three of the same species of plant are each grown...Ch. 8 - Plants containing only chlorophyll b are exposed...Ch. 8 - Which molecule must enter the Calvin cycle...Ch. 8 - Which order of molecular conversions is correct...Ch. 8 - Where in eukaryotic cells does the Calvin cycle...Ch. 8 - Which statement correctly describes carbon...Ch. 8 - If four molecules of carbon dioxide enter the...Ch. 8 - What is the overall outcome of the light reactions...Ch. 8 - Why are carnivores, such as lions, dependent on...Ch. 8 - Why are energy carriers thought of as either...Ch. 8 - Describe how the grey wolf population would be...Ch. 8 - How does the closing of the stomata limit...Ch. 8 - Describe the pathway of electi on transfer from...Ch. 8 - What are the roles of ATP and NADPH in...Ch. 8 - How and why would the end products of...Ch. 8 - Why is the third stage of the Calvin cycle called...Ch. 8 - Which part of the light-independent reactions...Ch. 8 - Why does it take three turns of the Calvin cycle...Ch. 8 - Imagine a sealed terrarium containing a plant and...Ch. 8 - Compare the flow of energy with the flow of,...
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- Cells of Thecontain chloroplasts epidermis vascular tissue stomata mesophyllarrow_forwardWhich of the following scenarios happens during the light-dependent reaction of photosynthesis? Oxygen gas is produced in the thylakoid lumen by the oxidation of water by photosystem I. Ferrodoxin and NADP+ reductase participates in the reduction of NADP+ to NADPH. Carbon dioxide enters the plants via stomata. Rubisco attaches three molecules of ribulose bisphosphate (RuBP) to one molecule of carbon dioxide.arrow_forwardChlorophyll is composed of a central porphyrin ring and a strongly hydrophobic phytol side chain. Which of the following correctly describes the function of the phytol side chain? absorbs visible light energizes an electron anchors the chlorophyll in the thylakoid membrane creates fluorescencearrow_forward
- Which among the following statements is CORRECT? The thylakoid membrane, in the chlorophyll, contains photosystems which are used to capture photons and excite electrons Electrons excited in photosystem II help the chloroplast produce NADPH Stroma is a gelatinous matrix inside chloroplast that contains ribosomes, DNA, and enzymes Electrons excited in the photosystem I help the chloroplast produce ATParrow_forwardIn an oak tree leaf 80 feet above the ground a cell of the spongy mesophyll is Photosynthesizing explain how the rest of the tree is meeting the physiological needs of the cell.arrow_forwardThe light (or light-dependent) reactions occur in the Stroma Matrix Cristae membrane Cytoplasm Thylakoid membranearrow_forward
- What stages of the light-dependent reactions occur prior to the buildup of hydrogen ions in the thylakoid compartment? Select all that apply. Energy emitted by the electron transport chain triggered by PSII generates a hydrogen ion gradient across the thylakoid membrane. PSII pulls replacement electrons from water molecules, which then break apart into oxygen atoms and hydrogen ions. A photosystem II (PSII) absorbs light energy and releases an electron. Electrons released from PSII enter an electron transport chain in the thylakoid membrane. A flow of hydrogen ions causes ATP synthase to phosphorylate ATP.arrow_forwardThe image below shows a plant that has one stem wrapped in plastic. You can see the condensation of water on the inside of the plastic bag. Which of the following best explain the processes required for the bag to accrue 1 point condensation? Water from the root to the leaves via the xylem and transpiration from the stomata O Photosynthesis from the leaves via the stomata. O Cellular respiration through the stems. Cellular division within the dermal tissue.arrow_forwardWhere in the plant cell does photosynthesis take placearrow_forward
- Which of the following is in the correct order from smallest to largest? Thylakoid disk, Photosystem I, mesophyll cell, chloroplast, leaf Photosystem II, Chloroplast, thylakoid disk, mesophyll cell, leaf Thylakoid disk, Photosystem II, chloroplast, mesophyll cell, leaf Photosystem II, Thylakoid disk, chloroplast, mesophyll cell, leafarrow_forwardWhat is required for simple diffusion? A transport protein A concentration gradient ATP Which of the following is NOT a component of a photosystem? Chlorophyll pigments Reaction center Accessory pigments Stomata and guard cells Proteins What does NOT occur in C4 The Calvin cycle takes place In bundle-sheath cells. Photorespiration is minimized CO2 is first fixed to form a four-carbon molecule. CO2 is first produced in the mesophyll cells using rubisco to form a six-carbon molecule Light energy that is capture in photosynthesis is converted to ______ energy stored in chemical bonds of molecules. Potential Sound Solar Kinetic Why do photosynthesizes contain accessory pigments in addition to chlorophyll a? To reflect different wavelengths on the exterior of the photosynthetic organism. To filter light such that only photons of the right wavelength reach chlorophyll a. To absorb wavelengths of light that chlorophyll a cannon and extend the range of the wavelengths captured.…arrow_forwardWhat are the products of the light-dependent reactions of photosynthesis? Select all that apply. NADPH O2gas ATP Sugarsarrow_forward
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