Given this information, and given your knowledge of what gases were thought to be present on ancient Earth, which of the following might be the function hemoglobin would have served in the earliest cells? Hemoglobin originally served to assist in the rudimentary stages of electron transport chains, as they are seen in animals currently. Hemoglobin helped to bind oxygen and deliver it to the components of ancient photosynthesis, as oxygen served as an electron carrier. Hemoglobin originally bound to nitrogen gas and help in the production of proteins and nucleic acids. Hemoglobin bound to oxygen and kept it away from other molecules in the cell, as oxygen is highly reactive and might cause damage to those molecules.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Given this information, and given your knowledge of what gases were thought to be present on ancient Earth, which of the
following might be the function hemoglobin would have served in the earliest cells?
Hemoglobin originally served to assist in the rudimentary stages of electron transport chains, as they are seen in animals currently.
Hemoglobin helped to bind oxygen and deliver it to the components of ancient photosynthesis, as oxygen served as an electron carrier.
Hemoglobin originally bound to nitrogen gas and help in the production of proteins and nucleic acids.
Hemoglobin bound to oxygen and kept it away from other molecules in the cell, as oxygen is highly reactive and might cause damage to those
molecules.
Transcribed Image Text:Given this information, and given your knowledge of what gases were thought to be present on ancient Earth, which of the following might be the function hemoglobin would have served in the earliest cells? Hemoglobin originally served to assist in the rudimentary stages of electron transport chains, as they are seen in animals currently. Hemoglobin helped to bind oxygen and deliver it to the components of ancient photosynthesis, as oxygen served as an electron carrier. Hemoglobin originally bound to nitrogen gas and help in the production of proteins and nucleic acids. Hemoglobin bound to oxygen and kept it away from other molecules in the cell, as oxygen is highly reactive and might cause damage to those molecules.
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