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2. Make a list of some facts in this article that relate to what we have studied so far. What We Learned Connections to our Chemistry Learning I learned that bacteria are able to substitute arsenic for phosphorus in some macromolecules, specifically lipids, nucleic acids, and proteins. I learned these macromolecules, arsenate can be found in the place of phosphate. T learned that other elements have been found to substitute in living things. I learned that arsenate was found in the bacterium but only when bacteria were grown in an environment lacking in phosphorus. I learned that the arsenate ion (As0,) is not as stoble as the phosphate ion (PO,). ahlp to substitute for phosphorus?

2. Make a list of some facts in this article that relate to what we have studied so far. What We Learned Connections to our Chemistry Learning I learned that bacteria are able to substitute arsenic for phosphorus in some macromolecules, specifically lipids, nucleic acids, and proteins. I learned these macromolecules, arsenate can be found in the place of phosphate. T learned that other elements have been found to substitute in living things. I learned that arsenate was found in the bacterium but only when bacteria were grown in an environment lacking in phosphorus. I learned that the arsenate ion (As0,) is not as stoble as the phosphate ion (PO,). ahlp to substitute for phosphorus?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Lesson 11: Student Activity Sheet Please read the Phosphorus/Arsenic Reading 1. What are the key discoveries reported in the article? 2. Make a list of some facts in this article that relate to what we have studied so far. What We Learned Connections to our Chemistry Learning I learned that bacteria are able to substitute arsenic for phosphorus in some macromolecules, specifically lipids, nucleic acids, and proteins. I learned these macromolecules, arsenate can be found in the place of phosphate. I learned that other elements have been found to substitute in Iiving things. I learned that arsenate was found in the bacterium but only when bacteria were grown in an environment lacking in phosphorus. I learned that the arsenate ion (As0,) is not as stable as the phosphate ion (PO,'). inhr arrnnic be able tO substitute for phosphorus?
Transcribed Image Text:Lesson 11: Student Activity Sheet Please read the Phosphorus/Arsenic Reading 1. What are the key discoveries reported in the article? 2. Make a list of some facts in this article that relate to what we have studied so far. What We Learned Connections to our Chemistry Learning I learned that bacteria are able to substitute arsenic for phosphorus in some macromolecules, specifically lipids, nucleic acids, and proteins. I learned these macromolecules, arsenate can be found in the place of phosphate. I learned that other elements have been found to substitute in Iiving things. I learned that arsenate was found in the bacterium but only when bacteria were grown in an environment lacking in phosphorus. I learned that the arsenate ion (As0,) is not as stable as the phosphate ion (PO,'). inhr arrnnic be able tO substitute for phosphorus?
Lesson 11: Reading - Using Arsenic Instead of Phosphorus NASA Scientists's Puzzling Discovery Adapted from A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus and NASA Finds New life (Science, Wolfe-Simon al., 2011) It is known that all life on Earth is composed of six elements: carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur. But a team of scientists at NASA have made a surprising and puzzling discovery in Mono Lake, California in 2011. This discovery is being called "life as we do not know it" by NASA. The NASA scientists thought they found a bacterium able to substitute arsenic for phosphorus in some macromolecules, specifically lipids, nucleic acids, and proteins. In these macromolecules, arsenate can be found in the place of phosphate. While other elements have been found to substitute in living things, such as other metals replacing iron as the oxygen-carrying element in some organisms, this bacterium was thought to be the first living thing found to have a replacement for one of the six essential elements for life. This is not a perfect substitution. In laboratory experiments, arsenate was found in the bacterium only when bacteria were grown in an environment lacking in phosphorus. The arsenate ion (AsO,) is not as stable as the phosphate ion (PO), arsenic is much more toxic than phosphate, and it is thought that some biological processes are not compatible with arsenic-substituted molecules. Despite the unknowns, this was still thought to be a remarkable discovery. The existence of an organism on Earth that can substitute for one of the six essential elements would suggest that the search for life beyond Earth may not be limited to just those six elements. Note: This study could not be replicated after 2011, and other studies have found that there has indeed been phosphorus in the organisms in Mono Lake, indicating that the organisms are not including arsenic in their DNA. References: Dier, L2010 December 2) ASA Finas New Lite, Giemodo. i main.comm ndan niatad Wolfe-Simon F, et al (2011 A bacterum that can grow try using arsenic Iinstead of phosphorus Scence. Retrieved juty 27, 2020, from
Transcribed Image Text:Lesson 11: Reading - Using Arsenic Instead of Phosphorus NASA Scientists's Puzzling Discovery Adapted from A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus and NASA Finds New life (Science, Wolfe-Simon al., 2011) It is known that all life on Earth is composed of six elements: carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur. But a team of scientists at NASA have made a surprising and puzzling discovery in Mono Lake, California in 2011. This discovery is being called "life as we do not know it" by NASA. The NASA scientists thought they found a bacterium able to substitute arsenic for phosphorus in some macromolecules, specifically lipids, nucleic acids, and proteins. In these macromolecules, arsenate can be found in the place of phosphate. While other elements have been found to substitute in living things, such as other metals replacing iron as the oxygen-carrying element in some organisms, this bacterium was thought to be the first living thing found to have a replacement for one of the six essential elements for life. This is not a perfect substitution. In laboratory experiments, arsenate was found in the bacterium only when bacteria were grown in an environment lacking in phosphorus. The arsenate ion (AsO,) is not as stable as the phosphate ion (PO), arsenic is much more toxic than phosphate, and it is thought that some biological processes are not compatible with arsenic-substituted molecules. Despite the unknowns, this was still thought to be a remarkable discovery. The existence of an organism on Earth that can substitute for one of the six essential elements would suggest that the search for life beyond Earth may not be limited to just those six elements. Note: This study could not be replicated after 2011, and other studies have found that there has indeed been phosphorus in the organisms in Mono Lake, indicating that the organisms are not including arsenic in their DNA. References: Dier, L2010 December 2) ASA Finas New Lite, Giemodo. i main.comm ndan niatad Wolfe-Simon F, et al (2011 A bacterum that can grow try using arsenic Iinstead of phosphorus Scence. Retrieved juty 27, 2020, from
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