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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<h2> I Messages</h2><h3><u>
What is an I message?</u></h3>
An I message is a positive way to<u> communicate strong emotions</u>. During conversations with others, use I messages to <u>express how you are feeling and what you want to happen.</u>
<h3><u>How to create an I- Message</u></h3>
- Feeling: State the emotion you feel.
- When: Tell what caused the feeling.
3. I would like: Explain what you want to happen instead.
<u><em>Instead of saying:</em></u>
You are bullying me!
<em><u>Say with an I message</u></em>
I feel uncomfortable when you bully me. I do not like the feeling. Please stop, and I know we can work this out.
Answer:
The correct answer is b) Experimenter bias.
Explanation:
The experimenter's bias is the research bias found in studies where the person in charge of the investigation unconsciously intervenes in the results or partially influences the participant.
In research, it is difficult for scientists not to be influenced by their emotions or prejudices, so the experimenter's bias is presented. This bias can be done at any stage of the study.
For example, it is difficult for Brian not to intervene and tie the shoelace to the child, although his study is to see how children addressed difficult situations, Brian for his intervention performed the experimenter's bias.
<em>I hope this information can help you.</em>
