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IgorLugansk [536]
3 years ago
9

The Miller-Urey experiment was important because it showed _____.

Social Studies
1 answer:
Vlad [161]3 years ago
6 0

Answer:

The correct answer is 3. The Miller-Urey experiment was important because it showed that is was possible to form organic molecules from inorganic molecules .

Explanation:

The Miller-Urey experiment was a famous experiment from 1953 in which Stanley Miller and Harold Urey demonstrated that under certain circumstances complex amino acids can arise spontaneously. The experiment is seen as an indication of how life on Earth may have originated from inorganic substances, the so-called primordial soup, and it was the first attempt in that direction.  

In the experiment, a mixture of methane, ammonia, water vapor and dihydrogen is heated and exposed to electrical discharges, which were to simulate lightning on the early Earth. It is believed that the friction of the dust particles released during volcanic eruptions was responsible for this lightning. The composition of the mixture was chosen based on what was assumed at that time about the atmosphere of the young Earth before there was life.  

After running continuously for a week with their arrangement, Miller and Urey found that 10 to 15% of the carbon in the system was now in organic compounds. Two percent had formed amino acids, including 13 of the 22 currently used by living cells, glycine being the most common. Sugars and lipids were also formed. However, the building blocks of DNA and RNA (nucleotides) were missing in their entirety. Simple versions of nucleotides such as nucleosides (nucleotides without the phosphate group) were also not found.  

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Carnegie made his fortune primarily in what industry?
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<span>If we are talking about Andrew Carnegie, he made a his fortune in the American Steel industry. During the early 19th century, he was a pioneer in expanding the industrial steel industry. He is considered one of the richest people.</span>
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3 years ago
A researcher studies the effect of interpersonal distance (near, far) and personality type (introvert, extrovert) on feelings of
lbvjy [14]

Answer:

D. IV x PV factorial

Explanation:

The IV x PV factorial is a tyoe of factorial design which tend to include both an experimental independent variable (IV) and a nonexperimental participant variable (PV).

In the case sited the researcher used both IV and PV to get his result.

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2 years ago
Professor Gordon finds that students who read newspapers daily displaymore knowledge of current events than students who do not
vivado [14]

Answer:

Covariation of cause and effect

Explanation:

According to my research on different causes of behavior, I can say that based on the information provided within the question the term that best exemplifies this is Covariation of cause and effect. This term refers to  the process of establishing that there is a cause and effect to relationship between the variables. In this situation the cause would be reading more newspapers, and the effect would be that the students display more knowledge of current events.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

5 0
3 years ago
Identify whether or not each scenario illustrates a defining element of the midlife stage of the human life course.
Lisa [10]

Middle age is a stage of human life that is characterized by:

  • People who are close to 50 years of age.
  • People who are open to new learning.
  • People more confident and less fearful of their decisions.

<h3>What is middle age?</h3>

Middle age is a classification to refer to a stage of life that is generally established between 50 and 64 years of age.

At this age, the adult is aware of what he has lived and what he still has to live. Unlike youth, people in this stage feel confident in making decisions and believe they have the necessary experience to make good decisions.

On the other hand, middle age is also characterized by adults who already have a stable economic life, which allows them to worry about other activities such as their hobbies or develop learning that they could not do when they were young.

Note: This question is incomplete because the options are missing. However I can answer it based on my prior knowledge.

Learn more about midlife stage in: brainly.com/question/11398152

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2 years ago
More than 10% of the US a population is in the state, What is the state?
Naddik [55]

Answer:

California I believe

(Population: 39,747,267)

7 0
2 years ago
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