Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 8.5, Problem 1CC
Summary Introduction
To determine: The minimisation of photorespiration in C4 plants through the cellular arrangement.
Introduction: The C4 plants are the plants that use the molecule of carbon dioxide and converts it into four-carbon oxaloacetate which further enters into the Calvin cycle. The anatomy and the physiology of the plants help them to survive in dry and hot climates.
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In what kinds of environments would you expect to find C3, C4, or CAM plants?
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Question 30
With your help, the bus arrives at the starting point for photosynthesis. You look at all the activity here - there's so much going on! Something looks a bit off though.
Ms. Frizzle announces to everyone: "Keep your hands inside the bus everyone! I was told this tree has been treated with a chemical that shuts down Photosystem I."
That makes sense with what you're seeing, you think. What do you see happening at Photosystem I? Or more to the point, what do you NOT see happening there?
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Question 31
The bus donast
BIUA 2 T²
هی
固v v 固v
く
く描く To 田
I
√x
Another Thought Question!
Calculate the gross and net photosynthetic productivity for this whole plant (lear
stems & roots) in this experiment. What do you think is happening in this plant
regard to the relationship between cellular respiration and photosynthesis, and
might a living plant be exhibiting these metabolic characteristics?
Light
Slope = 10.0 ppm/min
%3D
Slope = 10.0 ppm/min
CO, concentration (ppm)
Dark
Chapter 8 Solutions
Biology
Ch. 8.1 - Core Skill: Modeling The goal of this modeling...Ch. 8.1 - Prob. 2CSCh. 8.1 - Can the Calvin cycle occur in the dark?Ch. 8.2 - Prob. 1CCCh. 8.2 - Prob. 2CCCh. 8.2 - Prob. 3CCCh. 8.2 - Prob. 4CCCh. 8.2 - Why does cyclic photophosphorylation provide an...Ch. 8.2 - Prob. 6CCCh. 8.3 - Prob. 1CC
Ch. 8.4 - Prob. 1CCCh. 8.4 - Prob. 1EQCh. 8.4 - Prob. 2EQCh. 8.4 - Prob. 3EQCh. 8.5 - Prob. 1CCCh. 8.5 - Prob. 2CCCh. 8 - The water necessary for photosynthesis a. is split...Ch. 8 - In PSII, P68o differs from the pigment molecules...Ch. 8 - Prob. 3TYCh. 8 - Prob. 4TYCh. 8 - Prob. 5TYCh. 8 - Prob. 6TYCh. 8 - Prob. 7TYCh. 8 - Prob. 8TYCh. 8 - Prob. 9TYCh. 8 - Prob. 10TYCh. 8 - Prob. 1CQCh. 8 - Prob. 2CQCh. 8 - Prob. 3CQCh. 8 - Discuss the advantages and disadvantages of being...Ch. 8 - Biotechnologists are trying to genetically modify...
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- Discuss Concepts Baobab trees (Adansonia spp.) store water in their trunks (stems) and, although the trees have leaves, considerable photosynthesis also occurs in the trunks. Cacti too have water-storing, photosynthetic stems. In terms of evolutionary adaptation, what does this information suggest about cacti and baobabs?arrow_forwardIS THIS A GOOD BREAK DOWN? WHAT ELSE CAN I SHOULD I ADD? Briefly explain the light-dependent reactions of photosynthesis: where does this take place, what are the reactants and what is produced? Light-dependent reactions are used to convert light energy into chemical energy for use by the plants. Through the process of photosynthesis, the energy collected from the sun is broken down, along with water molecules, to produce NADPH and ATP. Light-dependent reactions Goal Convert light energy into chemical energy Location Chloroplasts—thylakoids Input Sunlight, H2O, NADP+, ADP Output NADPH, ATP, O2arrow_forwardMagaia et al. illustrated in Figure 2 the relationship of photosynthetic of temperature rate and respiration rate of C3 plants as a function (2015). Which process hampers the carbohydrate synthesis when the temperature exceeds 30°C? respiration photosynthesis 0 10 40 50 20 30 temperature C Figure 2. Relationship of photosynthetic rate and respiration rate in response to temperature. Ⓒ Magaia et al., 2015 O a. Light-dependent reaction O b. Light-independent reaction O c. Photorespiration O d. Photolysis of water ratearrow_forward
- Q no 2: Describe in detail what happens during the light reactions of photosystems. Use terms such as photosystems (be specific about which is which), pigments, reaction center, water-splitting, NADPH, ATP, ADP, NADP+, oxygen gas, etc?arrow_forwardPlease answer fast Many commercial herbicides act by inhibiting photosynthetic electron transport. They are investigating three herbicides for potential inhibitors of photosynthetic electron transport. a) How can you determine whether these substances have an inhibitory effect on photosynthetic electron transport? How can you quantify the effect? b) An inhibitor has produced a strong effect in "in vitro" tests, but the effect is significantly less in "in vivo" tests. What can be the reason for the reduced effect "in vivo"?arrow_forwardPhotosynthetic response curve to light for sun (solid line, N = 14) and shade leaves (dashed line, N = 21) of S. Why in this graph do we see shaded leaves have lower values compared to light leaves as PAR is increasing?arrow_forward
- Q and A Activity: 1. How do plants cope with the change in season? Give a detailed description and explanation. 2. How do plants capture the sun's energy? 3. What happens to light when it hits an object? Learning Process Activity: 1. What wavelength of light is most important to life on earth? 2. What color/s of light does chlorophyll absorb? What color does it reflect? 3. What composes a photosystem? 4. In what part of the photosystem does the first step of light reaction take place? 5. Differentiate the two types of photosystem.arrow_forwardNull hypothesis If the Hydrilla plant is placed in light conditions, then it will undergo photosynthesis and respiration. If the Hydrilla plant is placed in dark conditions, then it will undergo only respiration. The Hydrilla plant will undergo photosynthesis and respiration when placed in light conditions. The Hydrilla plant will undergo respiration only when placed in dark conditions. Determine the Independent and Dependent variablesarrow_forwardIn an experiment conducted on photosynthesis-CO2 update and photosynthesis-Determining rate in white light. what gas will be produce as an product of photosynthesis and if present, what will this allow the leaf dice to do? Also, what will be the goal of photosynthesis, and how will it be different from the goal of cellular respiration?arrow_forward
- Part F - How to determine transpiration rates by the whole plant method Which of the following best explains why the plant in front of the fan lost more mass than the control plant in normal room conditions? The leaves of the plant in front of the fan had the highest initial water potential and therefore lost the most water. The control plant had lower initial water potential in the root area and therefore lost less water. The control plant had a lower initial mass and so lost water at a decreased rate. The fan rapidly moves water molecules away from the leaf surface, lowering the water potential.arrow_forwardSans MS A BI U v Av V 14 =<市< 和 Photosynthesis & Cellular Respiration Worksheet 1. What is the overall reaction (equation) for photosynthesis? 2. How does this compare to the overall reaction for cellular respiration? 3. Where does the energy for photosynthesis come from? 4. What plant pigments are involved in photosynthesis? 5. In what organelle of a plant cell does photosynthesis take place? 6. What is produced by photosynthesis? U.S.) Text Predictions: Onarrow_forwardObserving the over-all equation for photosynthesis, what are two variables other than light intensity, which would have an influence on how quickly the leaf disks float? Thanks in advancearrow_forward
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