Animals obtain energy through a series of chemical reactions in which sugar (C6H12O6) and oxygen gas (O2) are reactants. This process produces water (H2O) and carbon dioxide (CO2 ) as waste products. How might you use a radioactive isotope to find out whether the oxygen in CO2 comes from sugar or from oxygen gas?

Animals obtain energy through a series of chemical reactions in which sugar (C6H12O6) and oxygen gas (O2) are reactants. This process produces water (H2O) and carbon dioxide (CO2 ) as waste products. How might you use a radioactive isotope to find out whether the oxygen in CO2 comes from sugar or from oxygen gas?

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter17: Metabolism: An Overview

Section: Chapter Questions

Problem 3P: Where Do the O Atoms in Organisms Come From? Name three principal inorganic sources of oxygen atoms...

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Similar questions

The primary purpose of cellular respiration is to produce a molecule (ATP) that supplies energy to the cell. To aid cell growth, O B creates cellular structures. For creatures to breathe, O C produces oxygen. In prokaryotic cells, D creates a nucleus.
Suppose you wanted to discover whether the oxygen atoms in the glucose produced by photosynthesis come from H2O or CO2. Explain how you could use a radioactive isotope to find out
Where Do the O Atoms in Organisms Come From? Name three principal inorganic sources of oxygen atoms that are commonly available in the inanimate environment and readily accessible to the biosphere.
What molecule is considered as a by-product of photosynthesis which is used by mammals to breathe? C6H12O6 CO2 H2O O2
The pure “fire air” consumed by a burning candle in a sealed glass jar, or by a mouse during aerobic respiration (in experiments conducted by Joseph Priestley), contains which of the following elements? hydrogen and carbon (derived from the C6H12O6 produced by plants during photosynthesis) carbon and oxygen (derived from the CO2 consumed by plants during photosynthesis) carbon only (derived from the C6H12O6 produced by plants during photosynthesis) hydrogen only (derived from the H2O produced by plants during photosynthesis) oxygen only (derived from the O2 produced by plants during photosynthesis)
If space exploration revealed a planet that had the water, sunlight, and climate, necessary to maintain good plant life, would it be possible to produce oxygen and food necessary to sustain human life?
Your science teacher says that matter is conserved in the process of cellular respiration. What does he mean by that? (a) None of the atoms in the food that we eat are destroyed during the process, and no new atoms are created in the formation of carbon dioxide, water and ATP (b) None of the molecules in the food are destroyed during the process, and no new molecules are created after the reaction between glucose and oxygen (c) Molecules in our food are destroyed, and new molecules, of carbon dioxide, water and ATP are created (d) None of the matter, whether solid, liquid, or gas, changes states during the process.
Animals breathe in oxygen. What is this atmospheric oxygen used for in the human body? (Give the name of the process where atmospheric oxygen is used and explain what happens to the atmospheric oxygen molecule.)
Which would be necessary to keep the reactions of life going, if enzymes were not present? 1. smaller atoms 2. higher temperatures 3. larger cells 4. larger proteins
(a) It can be argued that, if life were to exist elsewhere in the universe, it would require some process like photosynthesis. Why is this argument reasonable? (b) If the starship Enterprise were to land on a distant planet and find no measurable oxygen in the atmosphere, could the crew conclude that photosynthesis is not taking place?
Statement A: The flow of matter across the earth’s subsystems involves the transformation of matter into energy. Statement B: The breakdown of glucose molecule into H2O and H2O in the process of cellular respiration corresponds to the formation of a chemical form of energy adenosine triphosphate Both statements A and B are correct Statement A is correct, statement B is incorrect. Statement A is incorrect, statement B is correct Neither statement A nor statement B is correct.
Stanley Miller and Harold Urey performed an experiment by recreating in the laboratory the probable conditions of the atmosphere of the primitive earth.(i) What was the aim of the experiment?(ii) In what forms was the energy supplied for chemical reactions to occur?(III) For how long was the experiment run continuously? Name two products formed.