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Akimi4 [234]
3 years ago
11

Please help thank you :)

Biology
1 answer:
Lorico [155]3 years ago
3 0

Answer:

i think it is a

Explanation:

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Compare and contrast the structure of DNA with RNA.
Anni [7]
DNA is a double-stranded molecule, while RNA is a single-stranded molecule. DNA is stable under alkaline conditions, while RNA is not stable. ... DNA and RNA base pairing is slightly different since DNA uses the bases adenine, thymine, cytosine, and guanine; RNA uses adenine, uracil, cytosine, and guanine.
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3 years ago
does the presence of introns exons in eukaroytic cells provide more potentia diversity in gene products than is possible in pork
Leona [35]

Answer: Yes. Splicing can be done in different ways to yield different mRNAs wich will create different proteins. Prokaryotes are not able to do this.

Explanation:

DNA (deoxyribonucleic acid) is a molecule that contains the genetic information for synthesizing amino acids that form proteins. To do this, DNA must first be transcribed into RNA (ribonucleic acid) and this is the molecule used for protein synthesis (translation). The newly transcribed RNA (called primary messenger RNA) from DNA results in a very long molecule and also has regions that do not code for anything, called introns, which are removed by a process called splicing. Exons are segments in the RNA that do code for amino acids and remain in the mature mRNA after splicing.

<u>Splicing is a process by which introns are cleaved from the primary messenger RNA and exons are joined to generate mature messenger RNA.</u> In addition, alternative splicing occurs which allows different mRNA isoforms and thus different proteins to be obtained from a primary mRNA transcript. This is because the exons will be joined or spliced in different ways, giving rise to different mature messenger RNA sequences. This process occurs mainly in eukaryotes, although it can also be observed in viruses. But it does not take place in Prokaryotes (Bacteria).

In summary, exons/introns can be spliced together in different ways to yield different mRNAs sequences. Each different mRNA sequence will code for a different protein.

6 0
3 years ago
Explain how meiosis promotes variation in a species.
SCORPION-xisa [38]
In meiosis, the chromosome pairs do the crossing over where there is an exchange of genetic material between them and because of it the chromatids held together by the centromere are no longer the same.
7 0
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The map below shows the direction of ocean currents near North America.
dem82 [27]

Answer:d.

Explanation:hope you guys got it that’s what I got and it was right

4 0
3 years ago
How does the size of the moon’s core support the impact of the moon’s formation?
kogti [31]
The span of the moons center has nothing to do with the effect hypothesis, however has a remark with materials on the moon itself.
Since this hypothesis itself did not merged with regards to the arrangement for the lunar center however it emerged as a result of the materials that make up the moon itself in light of the fact that the materials that make up the moon contrasted with our own particular planet looks like an enormous similitude.


Or the answer will be:

If the event that effect the hypothesis is r8ght at that point after the impact material from the surface and mantle of the earth was brushed off into space gathering into the moon. There would be next to no material to shape a gigantic center.
6 0
3 years ago
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