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larisa86 [58]
2 years ago
9

How might the study of meteorites help astronomers determine the origin of meteoroids?

Biology
1 answer:
olganol [36]2 years ago
4 0

Answer:

Through the study of meteorites, their chemical composition of silicates—material made of silicon and oxygen. Others contain metal—nickel and iron. Knowing what the meteorite was composed of lets you know where it came from. Chondrites are composed of hardened lava - this is occurred at the beginning of the solar system (4.5 mya). Carbonaceous chondrites contain carbon and water which formed away from the sun.

Explanation:

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Describe how Stella’s view of these cells and their parts changed as she transitioned through the three levels of magnification.
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Answer:

The paramecium body.

Explanation:

1. The objective lenses on a compound light microscope doess have powers that start of as smallest to highest power, 4x, 10x, and 40x on the maximum power setting. This means that the sample can be magnified either, 40x, 100x or 400x.

At 40x magnification Stella will see organism 5mm.

At 100x magnification Stella will be able to see organism 2mm.

At 400x magnification Stella will be able to see organism more closely, 0.45mm, or 450 microns.

2. Paramecia are shoe shape or molded and almost transparent and shrouded in a defensive pellicle.

Pellicle capacities like skin and shields them from the components. For movement they have cilia.

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1 year ago
Write all possible codons recognized by each of the given anticodons. An anticodon strand reads 5'–GCG–3'. Fill in the missing b
gregori [183]

Answer:

Codon: 3'-CGC-5'

Codon: 3'-UGC-5'

Explanation:

The anticodons of tRNAs bind to the complementary codons of mRNA. The mRNA codons are always read in 5' to 3' direction. The 5' base of an mRNA codon pairs with 3' base of the anticodon of tRNAs. The first base of the anticodon (the  5' base) determines the number of mRNA codons that are recognized by the tRNA. When the 5' base of the tRNA anticodon is U or G, it binding with codon is less specific. A tRNA anticodon with 5’ G base can read two different codons.  

Anticodon:  5'–GCG–3'.

Codon: 3'-CGC-5'

Codon: 3'-UGC-5'

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