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galina1969 [7]
3 years ago
13

The motion of a body that travels around another body in space is called a rotation. True False

Biology
1 answer:
lukranit [14]3 years ago
4 0

true, because it is called rotation on google

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RNAi is a technique that silences genes by targeting them and degrading their mRNA. How can this technique be used in scientific
Anestetic [448]
For the first one I’d say D

The answer for the 2nd one is C.
4 0
3 years ago
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PLEASE HELP<br><br> Explain the difference between Positive and<br> Negative Tropism
gayaneshka [121]

Answer:

Tropism can be called positive or negative. Positive tropism is movement or growth towards a stimulus, whereas negative tropism is the movement or growth away from a stimulus.

Explanation:

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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.

3 0
2 years ago
Choose all the answers that apply.
nekit [7.7K]

In four o'clock flowers, red petals show incomplete dominance over white petals. If two pink flowers are crossed, 50 percent of the flowers will be homozygous, and 25 percent of the flowers will be heterozygous.

6 0
3 years ago
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Are salmon considered unclean ? ​
ANEK [815]

Answer:

it is unclean

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fish that have non-shedding, non-overlapping, diamond-patterned, or imbedded scales should be considered unclean.

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