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Blizzard [7]
3 years ago
10

One function of the poly-A tail on eukaryotic MRNA sequences is to help the MRNA be transported from the nucleus to the cytoplas

m. Prokaryotic mRNA also has a poly-A tail. Choose the best explanation of the prokaryotic poly-A tail.
Biology
1 answer:
Alinara [238K]3 years ago
3 0

Answer:

In eukaryotes, it is well known that polyadenylation is required to produce the mature messenger RNA (mRNA) molecule and it provides stability to the mRNA during translation initiation. In prokaryotic organisms, polyadenylation is required for the degradation of the mRNA in a mechanism that involves three steps: endonucleolytic cleavage, polyadenylation and exonucleolytic degradation. Moreover, it is also important to note that no evidence of polyadenylation has bee reported in some prokaryotes including the halophilic bacteria Haloferax volcanic (Slomovic et al. 2005).

Citation:

Slomovic, S., Laufer, D., Geiger, D., & Schuster, G. (2005). Polyadenylation and degradation of human mitochondrial RNA: the prokaryotic past leaves its mark. Molecular and cellular biology, 25(15), 6427-6435.

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Identify some beverages that are mixtures. Classify them as solutions, suspensions, or neither. Explain your classifications.
Minchanka [31]

Answer:

See explanation.

Explanation:

Hello.

In this case we can for instance take into account the following mixtures:

- Orange juice.

- Tea.

- A soda.

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- Coffee.

Thus, since the orange juice is a suspension as long as it contains different sizes of orange pulp particles that cannot be dissolved mostly because of its organic nature.

Tea can be a solution when we place a tea bag in a cup with warm water since just soluble components of tea are successfully dissolved in the water. Moreover, homemade tea based on some plants are fruits may behave as a suspension due to the oraginic particles that are not dissolved in the water yet suspended.

A soda is a solution of some water-soluble compounds, gaseous soluble carbon dioxide and water which are homogeneously distributed in the solution.

Salty water can be a solution if you put some salt in warm or just cold water and wait until it dissolves completely.

Coffee can be also a solution or suspension depending on how it is made, which type of coffee is used and the amount of coffee added to the hot water.

Best regards.

5 0
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Misha Larkins [42]
Pretty sure the answer is A
6 0
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Snezhnost [94]

Answer:

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Explanation:

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Answer:

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Explanation:

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