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
.
-Demographic factors such as age, ethnicity, gender, education, marriage status
-Psychosocial factors: beliefs, motivation, attitude
-Patient-prescriber relationship
-Health literacy
-Patient knowledge
-Physical difficulties
-Tobacco or alcohol intake
-Forgetfulness
-History of compliance
-Treatment complexity
-Duration of treatment
-Medication side effects or taste
-Degree of behavioral change required
-Requirements for drug storage
-Lack of accessibility
-Long waiting time
-Difficulty getting prescriptions
-Unhappy clinic visits
-Inability to take time off work
-Cost and income
-Social support
-Disease symptoms
-Severity of the disease
Answer:
Recycle able? Maybe... is this for PE?
Answer:
B. The top epidermal layer
Explanation:
Like most, if not all skin cancers start at your epidermis (The layer of skin that's most exposed to the sun) The cancer begins in your basal cells where they constantly push older skin cells toward the surface of your body.
Of the transfer of momentum
Well, when your arms are put forward, they do help you very much on doing the curl ups. It doesn't make anything easier, it just makes it to the point that you're not as uncomfortable. The reason why the exert less force is because of the transfer of momentum. There would not be enough momentum to help you get through that lift if your hands are put forward.
