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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1 Think positive<span>
It will make you have a healthier immune system.
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2 Get a good night's sleep
You can become more relaxed which help reduce stress.
3 Eat Vegetables
It will help your body have more energy and help reduce the risk for cancer and other serious illnesses.
4 Eating properly
It can help you from over eating so it will help manage your weight, keep you from stressing, have better focus and avoid those cravings.
You have to make sure all of the utensils you use to cook are clean and not full of bacteria. It is also preferable that you wash your hands before you begin cooking that way you do not pass any germs through the food.
It is essential everything is cleaned, cooked and inspected.
Answer:
1. prevent other team from scoring
2. has possession of the baby or puck
3.man to man
4.zone
5.motivation
When the head rotates or tilts, the otoliths in the vestibule sacs shifts, causing the fluid in the semicircular canals to move, bending hair cells, which turn in activate neural signals and notify them about the head's position and movement. The vestibule nerve connects with the cochlear nerve to form the auditory nerve, which relays information to the brain about balance.
