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Hatshy [7]
3 years ago
5

-6

Biology
1 answer:
Nostrana [21]3 years ago
5 0
Computer holds keys together
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Some have speculated that the origin of life occurred at geothermal vents. amino acids can form there. compared to the amino aci
cluponka [151]

There are a number of amino acids that have formed under certain environmental conditions if the required elements are present and the energy conditions ar compatible with chemical assembly. These conditions have also allegedly formed amino acids on meteors, asteroids and comets.


But, amino acids are a very minor component of more complex biochemical assemblies required for life. Pentose sugars are also required, which form under different environmental conditions than amino acids. More importantly, only left-handed homochiral amino acids and right-handed homochiral sugars can form functioning biochemical assemblies that are viable in an organism. But, natural conditions, like hydrothermal vents only produce racemic versions of sugars and acids, meaning they are always approx. 50% left and right handed. This is fatal to forming viable biochemical assemblies.


Further, it is not possible for all of the 20+ homochiral amino acids needed for a living organism to form naturally. The only ones found have been the simpler amino acids. Also, the 4 critical nucleotide amino acids, C, G, A, T, do not form naturally, are not homochiral, nor in the right proportions.


The geo/hydrothermal vent conjecture is nonsensical. These are open systems, susceptible to currents, mineral contamination, salinity, ph, and temperature, making them a totally unacceptable environment for the precise and exact placement of elements to assemble to form life.

3 0
3 years ago
What results when a type a patient receives a transfusion of type b blood?
aleksley [76]
Since they are not the same type they would be incompatible and this would cause you're immune system to attack the new blood cells and destroy them. Also known as ABO. Rate this the brainiest please. Thanks.
7 0
3 years ago
Is a shark bilateral or radial symmetry
Phoenix [80]
Sharks, like all vertebrates, have bilateral symmetry. This


means they have symmetry across one plane (known as the sagittal

plane, and directly down the centre of their body), which means one
6 0
4 years ago
A form of inheritance in which heterozygotes have a phenotype that is intermediate between homozygous dominant and homozygous re
Mashcka [7]
It is incomplete dominance <span />
5 0
4 years ago
A_____is a group of the same kind o living things in an ecosystem.
rewona [7]
<em>A<u> population </u>is a group of the same kind of living things in a ecosystem.</em>

<em>~I hope this helps! ;)</em>
4 0
3 years ago
Read 2 more answers
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