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gogolik [260]
3 years ago
13

Jessica was looking at the sky one night using a telescope. While looking at the night Sky, she was able to find the Andromeda G

alaxy. She asked her older sister what are the differences and similarities between the 3 types of Galaxies? What should her older sister answer? Please remember to support your answer with examples for each.
Atleast 3 complete sentences.

Please help! thank you!
Biology
1 answer:
USPshnik [31]3 years ago
5 0

Answer:

today, the basis for how we classify galaxies is still rooted in morphology. or how the galaxies apear. astronomers group galaxies by shape, and although there are many different types of galaxys, most fall into one of three categories. spiral elliptical or irregular

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Answer: A

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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
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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.

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PLEASE HELP ME!! true or false
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