Minerals in a rock becoming powdery and rusty is a chemical reaction, thus is Chemical Weathering.
Ecosystems experience change through human activity and natural events. This is because human activity can impact changes in nature, like climate for example. As a result, ecosystems change in response to the change in nature or natural events, which was caused by human activities. They are interrelated so to speak.
Answer:
Letter E - exons are cut from the strand and removed
Explanation:
Letter A and B are incorrect because the poly-A tail and guanine cap are added to the 3’ and 5’ end respectively. They aid in translation of the mRNA, while serving as protection. The poly-A tail is repeated adenine nucleotides, while the guanine cap is a modified guanine nucleotide.
Letter C is incorrect because alternative splicing is one mechanism for generating variation, and is thought to be one of the reasons for why humans have smaller genomes than other organisms and still maintain high complexity. Alternative splicing is incredibly important because it produces more than one transcript from a pre-mRNA.
Letter D is incorrect because introns are the non coding portions of the mRNA. They are excised to make a smaller mRNA transcript, and one that contains all the protein genes.
This letter E is the correct answer, because exons are the coding portions of the mRNA, and are not excised during RNA processing.
Hope that helped! If I made a mistake, please let me know.
Answer:
Potato
Explanation:
Hypertension is a condition developed due to the continuous high or elevated blood pressure in the arteries in the body. The main cause of hypertension is the contraction of the arteries and the consumption of food with a high level of sodium and low level of potassium.
It is suggested that people with hypertension should consume a diet rich in potassium but with a low amount of sodium. The good source of food with a high level of potassium is baked potato which provides carbohydrates also, salmon, and the banana.
Since the amount of potassium is high in the baked potato, therefore, is the correct answer.
The trp operon is a group of genes that code for enzymes involved in the synthesis of tryptophan, an amino acid.
The regulation of these genes is done by two regulatory processes:
- Transcriptional attenuation
- Post-transcriptional attenuation.
Transcriptional attenuation is the process by which transcription of a gene is reduced by the binding of regulatory proteins to the DNA at or near the promoter region. Post-transcriptional attenuation is a process where degradation of RNA molecules occurs after they are transcribed from DNA, but before they are translated into protein.
<h3 /><h3>How do they modulate trp operon transcript levels?</h3>
- The trp operon is a system of genes that encode the enzymes needed to synthesize tryptophan from indole-3-glycerol phosphate.
- The transcription of these genes is controlled by a repressor protein. When tryptophan levels are high, the repressor binds to the operator and prevents transcription. When tryptophan levels are low, the repressor is not bound to the operator and transcription can proceed.
To learn more about the regulation of trp operon, visit:
brainly.com/question/13897742
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