Which result from the Miller and Urey experiment provides evidence that the molecules of life could have spontaneously been produced in the ancient Earth environment? a After their experiment, they produced DNA from amino acids. b They showed how DNA can be produced from simple molecules that included water, oxygen, carbohydrates, and lipids. c Their experiment produced amino acids—the building blocks of life—from chemicals that existed in the environment of ancient Earth. d Miller and Urey's experiment provided evidence that showed that although oxygen was lacking in the environment of ancient Earth, it could be readily made from the decomposition of rocks and minerals.

Which result from the Miller and Urey experiment provides evidence that the molecules of life could have spontaneously been produced in the ancient Earth environment? a After their experiment, they produced DNA from amino acids. b They showed how DNA can be produced from simple molecules that included water, oxygen, carbohydrates, and lipids. c Their experiment produced amino acids—the building blocks of life—from chemicals that existed in the environment of ancient Earth. d Miller and Urey's experiment provided evidence that showed that although oxygen was lacking in the environment of ancient Earth, it could be readily made from the decomposition of rocks and minerals.

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter6: Dna Structure And Function

Section: Chapter Questions

Problem 2DID

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Scientists Stanley Miller and Harold Urey set up an experiment modeling the environmental conditions thought to exist during the early stages of Earth's formation. The setup of Miller and Urey's experiment is shown below. Which conclusion about the origin of life could be drawn from the potential results of this experiment? Life assembled from chemical building blocks. Life began when water vapor became electrified. Life evolved from the DNA of simple unicellular organisms. Life began when salt water caused a mutation in an ancient virus.
The Miller experiment did not create life, nor did the gases used resemble Earth’s first atmosphere as we presently understand it. The experiment was important because it a. showed that complex organic molecules can form under a variety of circumstances. b. synthesized the carbon atom. c. produced a DNA by-product that eventually leads to RNA and other bases. d. produced RNA, which later formed proteins out of the amino acids. e. synthesized the four bases needed for the production of DNA.
Which molecule -DNA or RNA- do scientist believe was found in the first life form on Earth? Why do scientist believe this molecule was first to form life?
During the course of evolution why DNA was choosen over RNA as genetic materials?
Even though they have several differences, a bacterium and a human cell will both contain DNA. With respect to evolution, what does this fact suggest?
If RNA played a key role in the origin of life,why do cells now use DNA for information storage and proteins to carry out other cellular processes?
What evidence is there for the hypothesis that life originated on Earth by the creation and polymerization of small organic molecules by natural processes?
DNA is often referred to as the “blueprint for life.” Why?
How does the structure of a DNA molecule help account for the great variety of life that exists on earth?
Which of the following questions about the origin of life on Earth is most scientifically testable? * Why were the earliest life-forms created using only twenty amino acids? Did life originate to make the universe a better place? Was catalytic RNA used by ancient organisms as a stepping stone to acquire protein enzymes? Can simple organic molecules form spontaneously in an oxygen-free atmosphere?
What Darwin Never Knew. What did Darwin not know about when he wrote the Origin of species by natural selection? List each example mentioned in the show and how they provide support for the theory. Why is DNA important to understanding evolution? What are some ways DNA can change? What controls fruit fly wing spots ?
RNA is often characterized as being the first“biologically active” molecule. What two properties or activitiesdoes RNA display that are important to the evolution of life? Hint:Neither proteins nor DNA have both of these properties.

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a	After their experiment, they produced DNA from amino acids.
b	They showed how DNA can be produced from simple molecules that included water, oxygen, carbohydrates, and lipids.
c	Their experiment produced amino acids—the building blocks of life—from chemicals that existed in the environment of ancient Earth.
d	Miller and Urey's experiment provided evidence that showed that although oxygen was lacking in the environment of ancient Earth, it could be readily made from the decomposition of rocks and minerals.