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
myrzilka [38]
3 years ago
13

7.An experiment was conducted that showd the building blocks of life (amino acids) could indeed be formed by the combination of

warm salt water, volcanic gases, and sparks of electricity.
Biology
1 answer:
taurus [48]3 years ago
4 0

Answer:

The most significant experiment performed to date on the formation of organic molecules remains that of Miller and Urey in 1952 when they sought to test the hypothesis of Oparin and Haldane that the organic building blocks of life emerged from a reducing atmosphere (Miller, 1953). Miller filled a flask with the four gaseous elements of the reductive atmosphere: methane, ammonia, hydrogen and water. He then passed electrical discharges through them to simulate lightning. After 125 h of the experiment, using the equipment available to him at the time, Miller identified several alpha amino acids contained within the residues.

You might be interested in
What is an important effect of mars low temperature and low air pressure
stepan [7]

Standing on the ground and looking up, you are looking through the atmosphere. It might not look like anything is there, especially if there are no clouds in the sky. But what you don’t see is air – lots of it. We live at the bottom of the atmosphere, and the weight of all the air above us is called air pressure. Above every square inch on the surface of the Earth is 14.7 pounds of air. That means air exerts 14.7 pounds per square inch (psi) of pressure at Earth’s surface. High in the atmosphere, air pressure decreases. With fewer air molecules above, there is less pressure from the weight of the air above.

Pressure varies from day to day at the Earth’s surface - the bottom of the atmosphere. This is, in part, because the Earth is not equally heated by the Sun. Areas where the air is warmed often have lower pressure because the warm air rises. These areas are called low pressure systems. Places where the air pressure is high, are called high pressure systems.

A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation. Because of Earth’s spin and the Coriolis Effect, winds of a low pressure system swirl counterclockwise north of the equator and clockwise south of the equator. This is called cyclonic flow. On weather maps, a low pressure system is labeled with red L.

A high pressure system has higher pressure at its center than the areas around it. Winds blow away from high pressure. Swirling in the opposite direction from a low pressure system, the winds of a high pressure system rotate clockwise north of the equator and counterclockwise south of the equator. This is called anticyclonic flow. Air from higher in the atmosphere sinks down to fill the space left as air is blown outward. On a weather map, you may notice a blue H, denoting the location of a high pressure system.

How do we know what the pressure is? How do we know how it changes over time?  Today, electronic sensors in weather stations measure air pressure. These sensors are able to make continuous measurements of pressure over time. In the past, barometers were used and measured how much air pushed on a fluid, such as mercury. Historically, measurements of air pressure were described as “inches of mercury.” Today, meteorologists use millibars to describe air pressure.

Air pressure depends on temperature and density.

When you inflate a balloon, the air molecules inside the balloon get packed more closely together than air molecules outside the balloon. This means the density of air is high inside the balloon. When the density of air is high, the air pressure is high. The pressure of the air pushes on the balloon from the inside, causing it to inflate. If you heat the balloon, the air pressure gets even higher.

8 0
3 years ago
Read 2 more answers
What are the characteristics of iodine ?
densk [106]
Iodine is a non-metallic, dark-gray/purple-black, lustrous, solid element.
3 0
3 years ago
When fertilizer runs off into streams and lakes, what increases in the water? Select all that apply.
Goshia [24]
D the amount of Toxic Chemicals
7 0
3 years ago
A burn or injury to a tissue is caused by
Sav [38]

 A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires and flammable liquids and gases are the most common causes of burns. Another kind is an inhalation injury, caused by breathing smoke.

Hope This Helps!       Have A Nice Day!!

4 0
3 years ago
Consider the experiment in which the expression of two copies of the same gene are measured using the green fluorescent protein
Nat2105 [25]

Answer:

Explanation:

Consider, for example, “shot noise” in a digital camera. ... Defining Extrinsic versus Intrinsic Noise in Transcription ...

4 0
3 years ago
Other questions:
  • How does digitizing images make it easy to transmit images?
    14·1 answer
  • what are 2 examples of a base we use everyday other than baking soda, milk, windex, soap, eggs, and dish detergent? thank you
    11·1 answer
  • Where would sound travel the slowest? fast answers!
    8·1 answer
  • Which of the following is/are true about eukaryotic transcription?
    9·2 answers
  • In DNA, the nitrogen bases pair up. The correct pairing is __________ with _________, and ________ with _________. *
    12·1 answer
  • 1. Name three types of evidence used to support the theory of evolution
    14·1 answer
  • What is the relationship between explanation and description?
    9·1 answer
  • How do mutations lead to variation?
    12·1 answer
  • What is the phase change from gas to liquid?
    13·2 answers
  • Excitatory stimuli generally cause the membrane potential of a neuron to
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!