a. A translation stop codon is added at the 3' end of the pre-mRNA.
c. A poly-A tail (50-250 adenine nucleotides) is added to the 3' end of the pre-mRNA.
d. Coding sequences called exons are spliced out by ribosomes.
Explanation:
In eukaryotes, during protein synthesis, the RNA must exit nucleus through the pores on the nuclear membrane and enter into the cytoplasm to undergo translation.
The exit processes of mRNA are: the 5’ capping, 3’ Poly-A tail, and pre-mRNA splicing.
The 5’capping is the initial step with addition of 7-methylguanosine cap to the 5’ end of the mRNA by phosphate linkage. This process protects the mRNA from degrading and helps to initiate translation processes.
The 3’ Poly-A tail step is the cleaving of pre-mRNA and addition of addition of around 200 A nucleotides or the 3’poly (A) tail to the mRNA by the poly (A) polymerase enzyme protein complex. This prevents pre-mRNA degradation, facilitates movement of mRNA to the cytoplasm, and initiates translation.
Pre-mRNA splicing is done to remove the introns from the mRNA because they are not part of function protein coding. The exons which take part in protein coding sequence are spliced once the introns are excised.
Finally, the resultant mRNA will exit the nucleus and enter the cytoplasm to undergo translation
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RCA stent and cardiac care
Explanation:
Right coronary artery stent placement is done by insertion of a flexible thin catheter through insertion points in the arm or groin.
In the above case, the patient’s RCA stenting has been through groin insertion. Re-examination of the insertion site reveals a normal without any bruising or active bleeding.
The patient’s groin pain at the insertion site will subside within a few days till it’s healed completely. Sandbag can reduce the pain.
The new medication regimen along with advice to stop smoking is to maintain a good cardiac health. But the patient feels is quite tough to follow since he works along with people who are smokers which can lead to passive smoking. Passive smoking is one of the potential risk factor for coronary artery diseases.
Antiplatelet medications like clopidogrel, aspirin etc are prescribed to maintain normal blood flow.
The patient should take the new medications and should restrain from both active and passive smoking to reduce his cardiac risk factors.
Answer:
thats is so disappointing
Explanation:
like my family, they keep their racism to a minimum but i know them, they hide the fake smiles and responses, like no stop and admit u are racist, everyone can see behind ur mask, drop ur act and man up and admit it, it deeply hurts me how people can disguise anything with a fake smile and reassurance
It's very important and useful to consume multivitamins; although it's much better and healthier to simply eat vegetables and foods which then povide you with your daily recommended levels of all of them. Without vitamins and minerals, our body wouldn't function properly and it would probably shut down and we would slowly start to perish.
C. nipple discharge
it's normal for breasts to swell or grow but not for the nipples to discharge
