1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elina [12.6K]
3 years ago
15

In the Miller-Urey experiment, electrical sparks were passed through a mixture of gases, including hydrogen, water vapor, methan

e, and
ammonia. These gases were thought to be present in the atmosphere of early Earth. The results showed that the gases reacted to form ami
acids, which are the building blocks of proteins. Which conclusion about the origin of life on Earth is MOST STRONGLY supported by the Mi
Urey experiment?

A. All organic molecules, including amino acids, were produced from chemical reactions on early Earth.

B. Some organic molecules, including amino acids, could have been produced from chemical reactions on early Earth

C. Complex organic molecules, such as proteins could not have been produced from chemical reactions on early Earth

D.Complex organic molecules, such as proteins could have been produced from chemical reactions on early Earth.
Biology
1 answer:
STatiana [176]3 years ago
5 0

Answer:

The answer is B. Some organic molecules, including amino acids, could have been produced from chemical reactions on early Earth.

Explanation:

Miller-Urey Experiment:

The Miller-Urey experiment was an attempt to explain the origin of life on Earth. Miller-Urey simulated the primordial soup i.e. the environment of primitive Earth to prove the spontaneous generation of organic molecules. The conditions they introduced included:

  1. A methane-ammonia-hydrogen and water mixture that exactly simulated the primordial soup.
  2. A spark of 70,000 volts that simulated lightening.
  3. A temperature of 800 degree Celsius.

Observations:

  • After running for 18 days, the final solution was examined for presence of organic molecules.
  • Miller-Urey observed that most of the methane and ammonia had been consumed and the mixture contained carbon monoxide and nitrogen.
  • The solution further contained 25 amino acids (mainly, glycine, alanine and aspartic acid) , several fatty acids , hydroxy acids  and amide products.

The experiment concluded that simple organic compounds such as amino acids could have been formed through spontaneous generation under the Earth's primitive environmental conditions.

You might be interested in
_____ serves as an energy substrate for metabolism.
Fed [463]
The evolutionary selection process for glycogen metabolism<span> reflects the requirements of rendering large amounts of glucose into an osmotically stable but readily soluble </span>substrate<span> for rapid mobilization. Therefore glycogen </span>serves<span> as a glucose reserve and </span>substrate<span> buffer for local </span>energy<span> demand.</span>
4 0
3 years ago
How can a female reproduce at a time when there are no males available for fertilization?
Arte-miy333 [17]

Answer:

parthenogenesis I think

8 0
3 years ago
Complete the sentence: The elongation of the leading strand during DNA synthesis
DedPeter [7]
Is made using the enzyme DNA polymerase, from the 5' to the 3' end?
3 0
3 years ago
What is the message that travels to the central nervous system called?
Nataly [62]
I think its called an Axon.
7 0
3 years ago
PLSSSS HELPPPPPPPP ME THIS IS SO HARD PLSSS
creativ13 [48]

Explanation:

read the passage first

6 0
2 years ago
Read 2 more answers
Other questions:
  • Assessment timer and count Assessment items Item 5 At each step, a dichotomous key involves how many choices?
    14·2 answers
  • List at least four things you can do to improve your ergonomics
    13·2 answers
  • Select all that apply. What are some of the ways organisms reproduce asexually?
    5·1 answer
  • The functions of the oral cavity include all of the following except Select one: A. mechanical processing of food. B. absorption
    11·1 answer
  • What is a dependent variable in biology?
    9·1 answer
  • Which is one major product of the ETS series of reactions
    13·1 answer
  • You encounter a shrubby-looking plant that you cannot tell if it has true wood or not. Upon cutting it open cross-sectionally, y
    15·2 answers
  • Which is a key component of the energy molecule ATP?
    10·1 answer
  • Amelia puts some ice cubes in a cup of water at room temperature. Which statement describes the heat flow in this situation?
    10·2 answers
  • Atherosclerosis is a condition where hardening plaque forms in damaged areas of the arteries. As the amount of plaque increases,
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!