Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 13, Problem 23RQ
Summary Introduction
To explain:
Plants actively engaged in photosynthesis but also evolve carbon dioxide.
Introduction:
Plants provide oxygen to the environment through photosynthesis. The plants absorb CO2 (carbon dioxide) and in presence of light, they fix the carbon dioxide and produce oxygen. Plants also evolve some concentration of CO2.
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This question is for a photosynthesis and electron transport chains experiment
QUESTION 1
1.1 Draw a schematic diagram of the components of the electron transport chain, depicting the enzymes and components of the chain. The site of inhibition of well known inhibitors should also be indicated
1.2 Draw a diagram of the antioxidant metabolism involved in reactive oxygen species (superoxide, hydroxyl free radicals and hydrogen peroxide) with the electron transport chain as the origin.
Why is the nickname “dark reactions” not entirely correct for the chemical stage of photosynthesis?
Chapter 13 Solutions
Biochemistry: The Molecular Basis of Life
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- Why does rubisco have such a low catalytic rate (that is, why is it so slow)?arrow_forwardTrue or false: Since ATP is generated in chloroplasts, cells capable of undergoing photosynthesis do not require mitochondria.arrow_forwardQuestion 38 All algae contain ___, but can be characterized by _____. a cellulose; photosynthesis b flagella; chlorophyll c chlorophyll; other pigments d photosynthesis; flagellaarrow_forward
- Why is photorespiration considered an evolutionary artifact?arrow_forwardWhat are the three general roles of carbon-containing compounds in metabolism?arrow_forwardWhat does this reveal about the role of the carbon dioxide in photosynthesis? (the solution with chara is green so it is neutral while the btb solution is yellow so it is acidic )arrow_forward
- true or false All living photosynthetic organisms are capable of photosynthesis but not respiration.arrow_forwardBy what oxygen is not produced during photosynthesis?arrow_forwardTrue or False. The Krebs cycle is considered to be an anabolic pathway because some of the reactions are considered reversible.arrow_forward
- Mitochondria are important organelles for energy production. Why do mitochondria contain dehydrogenases?arrow_forwardQuestion 1: Glycolysis and the citric acid cycle both add a phosphate group to ADP to form ATP through the process known as: Answer: Question 2: Cellular respiration is an example of: (pick one) a catabolic and endergonic reaction an anabolic and exergonic reaction an anabolic and endergonic reaction a catabolic and exergonic reaction Question 3: At the end of cellular respiration, about how many ATP molecules have been produced? (pick one) 2 ATP per glucose 12 ATP per glucose 24 ATP per glucose 32 ATP per glucose Question 4: What serves as the final electron acceptor in the transport chain? Answer: Question 5: The 4-carbon molecule that is recycled during the citric acid cycle is: (pick one) oxalacetate ADP acetyl CoA RuBP Question 6. The enzyme used to synthesize ATP during chemiosmosis is known as Answer: Question 7: Most of the carbon dioxide produced by the catabolism of glucose is…arrow_forwardWhy do organisms using or living in the presence of oxygen need to eliminate these chemical species ( free radicals)? in reference to oxygen usage which organisms must produce enzymes that detoxify free radicals?arrow_forward
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