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3 years ago

100 points and Brainliest!!! Plus, an opportunity for an extra 100 points if correct.

Biology

1 answer:

rewona [7]3 years ago

3 0

Answer:

Natural selection leads to evolution due to the way reproduction works. In the example of European moths during the industrial revolution, we can see this clearly. When the industrial revolution was going, there was more pollution, hence darkening the skies and leaving ash. Moths, which before were white with occasional black spots dominated the area until pollution effected their environment. Whiter moths were eaten by bird who could easily see them against the black trees and skies. These moths could no longer reproduce, they were dead. Moths with more black could survive longer to reproduce because they were harder to see. As time went along, the moths turned mostly black, showing an example of evolution.

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Which of the following is not a role of ATP synthase?

VashaNatasha [74]

Answer:

ATP synthase donates an electron to the electron transport chain.

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3 years ago

Based on the conditions of early Earth, what conclusion can you draw about the amount of anaerobic respiration that was occurrin

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3 years ago

A part of an mRNA molecule with the following sequence is being read by a ribosome: 5'-UGC-GCA-3' (mRNA). The charged transfer R

iren [92.7K]

mRNA codons determine which amino acid will be added to the growing polypeptidic chain. tRNA anticodons pair these codons and add the correct amino acid. The dipeptide formed will be Cysteine-Alanine.

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Let us review a few points,

In protein synthesis, the ribosome reads mRNA in the 5´ to 3´ direction.

According to the codons being readen, tRNA transfers the correct amino acids to build the polypeptide chain.

A codon is a short sequence of three nucleotides that store the genetic information for the aminoacids´ assembly.

Each codon represents one amino acid used to build the protein.

Each tRNA has two important sites. One of them that couples with the codon of the mRNA molecule, named anticodon. The other site couples with an amino acid.

The anticodon is a short sequence of bases that pairs with mRNA codons.

tRNA adds amino acids following the codons sequence in the mRNA molecule.

The protein grows from the amino terminus to the carboxy terminus.

Adenine forms pairs with Uracyl ⇒ A↔U

Guanine pairs with Cytosine ⇒ C↔G

In the exposed example,

→ mRNA ⇒ codons ⇒ 5'-UGC - GCA-3'

→ tRNA ⇒ anticodons ⇒ ACG CGU

→ proteins ⇒ amino acids ⇒ Cys Ala ⇒ Codon UGC codes for Cysteine

⇒Codon GCA codes for Alanine

So, for the given sequence of mRNA, tRNA anticodons are ACG and CGU. And the added amino acids are Cysteine and Alanine.

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2 years ago

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Mrs. Cortez has asked her students to write an explanation what chromosomes are and what they do. Four student examples are show

wlad13 [49]

Answer:

Araceli

Explanation:

I believe this because she just explains it very nicely & if you are to search up chromosomes definition, you'll see that her answer is very identical.

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3 years ago

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3 years ago