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Why did nature choose the specific 20 amino acids?
The specific 20 amino acids used in protein synthesis were likely selected due to their unique chemical properties that allow for diverse protein structures and functions. These amino acids are essential for building proteins with a wide range of biological roles, which has proven advantageous for living systems in terms of adaptability and evolution.
What will probably decrease populations density?
Population density decreases as people move away from each other. For example, when the suburbs began to be created, population density decreased in cities.
How did life on earth form?
In the natural sciences, abiogenesis, or origin of life, is the study of how life on Earth could have arisen from inanimate matter. It should not be confused with evolution, which is the study of how living things change over time. Amino acids, often called "the building blocks of life", occur naturally, due to chemical reactions unrelated to life. In all living things, these amino acids are organized into proteins, and the construction of these proteins is mediated by nucleic acids. Thus the question of how life on Earth originated is a question of how the first nucleic acids arose.Some facts about the origin of life are well understood, others are still the subject of current research. The first living things on Earth are thought to be single cell prokaryotes. The oldest ancient fossil microbe-like objects are dated to be 3.5 Ga (billion years old), just a few hundred million years younger than Earth itself.[1][2] By 2.4 Ga, the ratio of stable isotopes of carbon, iron and sulfur shows the action of living things on inorganic minerals and sediments[3][4] and molecular biomarkers indicate photosynthesis, demonstrating that life on Earth was widespread by this time.[5][6]On the other hand, the exact sequence of chemical events that led to the first nucleic acids is not known. Several hypotheses about early life have been proposed, most notably the iron-sulfur world theory (metabolism without genetics) and the RNA world hypothesis (RNA life-forms).
How ozone layer can be damaged?
the amount of ozone in the atmosphere began to drop sharply in the 1980s . this decrease has been linked to synthetic chemicals like chlorofluorocarbons which are used in refrigerants and in fire extinguisher's .
What science began because of the microscope?
I think Biology was the science that began because of the microscope
What did the Miller-Urey experiment demonstrate about Archean Earth?
life began in ocean that amino acids were likely abundant
Why did nature choose the specific 20 amino acids?
The specific 20 amino acids used in protein synthesis were likely selected due to their unique chemical properties that allow for diverse protein structures and functions. These amino acids are essential for building proteins with a wide range of biological roles, which has proven advantageous for living systems in terms of adaptability and evolution.
Is to decrease noun?
Yes, the word 'decrease' is both a verb (decrease, decreases, decreasing, decreased) and a noun (decrease, decreases).The term 'to decrease' indicates that the word is functioning as a verb.Examples:Business began to decrease as soon as they dug up our street. (verb)The decrease in business is due to the street construction. (noun)
What substances were likely to have been around when life first began?
Key molecules likely present when life first began include amino acids, nucleotides, lipids, and sugars. These molecules are the building blocks of proteins, nucleic acids, cell membranes, and energy sources needed for early life processes. Additionally, water, minerals, and ions would have been abundant on early Earth and crucial for biochemical reactions.
What is the Primoridail Soup theory?
The theory that life evolved from a "primordial soup" of amino acids that began to form the basic proteins that make up living cells. Some speculate that an electric charge may have "jump-started" the chemical reaction.
Did Stanley Miller demonstrate how early life began on earth?
The famous Stanley Miller experiment used a flask, an electrical discharge to simulate lightning, and molecules of everyday substances like water, ammonia, and methane. In other words molecules that are present in nature and their components are present in DNA. The theory was that the early earth was a volatile place with large amounts of the basic molecules and at one phase in the earths evolution constant storms and lightning. The experiment successfully produced some amino acids. Given the vast amount of time there was an opportunity for billions of trillions of different combinations of these molecules and that a chance "stringing together" of these amino acids capable of replication could occur. The first self replicating proto life may have been proteins, viruses, prions, enzymes or all the above. The smallest structures in the DNAverse.
Membership in the AF of L began to by early 1920 as economic conditions improved?
decrease
Did Prohibition increase or decrease in the 1920s?
National Prohibition in the US began in 1920 but support for it declined throughout the 1920s.
What is early earths atmosphere?
This is quite a controversial topic. After an experiment, scientists believe that the early earth had an atmosphere that contained amino acids, which gave a purplish-pink tinge to the atmosphere and helped life grow. What is most widely accepted is that the early earth was a fiery hot ball made of molten magma. As meteors hit its surface, the lighter metals floated up and the heavier elements sunk down. This created the first land. Volcanoes that were erupting CO2 created ideal conditions for plant life, that absorbed only CO2, to thrive. Comets that crashed down released water, letting plants absorb its minerals and grow ever more healthily. Life began to grow this way. The land began to cool down. The plants grew to large numbers, and began to release more oxygen than the amount of CO2 they could take in. Gradually, these plants began to die out. However, with the amount of oxygen they released, the plants lay a foundation for life. ---- A Budding Cryptozoologist
What was the amount of cfcs from the 1900s and the prediction in 2050?
The amount of CFC's was not there in 1900. It began increasing. 2050 depends on how we continue using it.
Why do people need protein?
Proteins provide the body with amino acids which are essential to its functioning, and to building muscle. Proteins are obtained from external sources, but it must be pointed out that millions of people enjoy a vegetarian diet. The consumption of meat is not essential. Look up amino acids to get an idea of them - few in number. They are the formation of the DNA ladder! In a sense, proteins are analogous to vitamins which are also essential to the body's functioning, but some of which we cannot make ourselves.
Who was the republican governor who began a program to reform state politics in Wisconsi?
La Follette began the program the Wisconsin Idea. The program was aimed to decrease the power of political machines and to make the state government more professional. P. 614
