WHAT IS LIFE? ACHIEVE 1 TERM ACCESS CODE
WHAT IS LIFE? ACHIEVE 1 TERM ACCESS CODE
5th Edition
ISBN: 9781319516116
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 5, Problem 5SA
Summary Introduction

To explain: The reason behind oxygen level measurement provides an indication rate of photoreaction and describes how the plant can use carbon dioxide provided by bicarbonate solution, as well as explain how increasing carbon dioxide source affects the rate of photoreaction in plants.

Introduction:

Photosynthesis is a biochemical process in which plants capture light energy and through a series of reactions produce organic energy molecules that later fuel the reactions of fixing atmospheric carbon dioxide and water into organic food molecules.

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A. The C4 plant performs photosynthesis more efficiently than the C3 when the CO2 concentration is 600ppm or less.  Provide one reason why the rate of photosynthesis doesn’t change for the C4 plant when the CO2 concentration increases above 400 ppm.   B. Discuss what is happening in the C3 plant when the CO2 levels are below 50 ppm.  Provide one reason why this does NOT happen to the C4 plant.
Identify the chemical basis for ApH and AY across the chloroplast thylakoid membrane by dragging the descriptions to their targets. Be sure to notice that the upper arrow iindicates ApH and the lower arrow indicates ΔΨ. ATP synthase complex H+ N ADP + P₁ Light energy ATP H*N Photosystem I/II- Chloroplast N side Aus PN ApH T + Thylakoid membrane HTp H+p Lumen Stroma P side Proton circuit A B High H concentration Low positive charge High positive charge Low H+ concentration Within the image, identify the types of proton translocation by dragging each label to its target. O XH₂ 2H+ + Z 2 H* ZH₂ O XH₂ Z 2H+ ZH₂ 2H+ C A B Proton pump Redox loop
We perform our measurements for KHP at 281 nm. Would we get the same results for pathlength at 250 nm? What about using chlorophyll at 667 nm?   Why might a too high concentration of KHP give erroneous data for measuring pathlength?
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