welcome redditors!to snoo-finity ... and beyond!
Welcome to ngman's page.
Contributor score: 3
School:


Comments ...




Subcomments ...

Why is alternative splicing or post-transcriptional modification incorrect?

tea-cats-biscuits  You just have to know that POMC is a pro-protein that must be cleaved; not sure if there’s anything in the stem that would really have given it away. +  
mcl  Dunno if this helps, but it says "this protein" (singular) is the precursor of two different protein products. This must mean that the modification occurs after the protein is made, which means after transcription and splicing has already happened. +5  
ngman  Also I believe mRNA refers to after the splicing already occurs. If the protein products are from the same mRNA then it can't be alternate splicing. +  
medschul  They're cleaved by tissue-specific proteases +  
duat98  I think: Alternative splicing occurs with hnRNA not mRNA. You get mRNA from alternatively splicing the hnRNA. an mRNA can only make 1 type of protein. Since the question says the 2 proteins comes from the same mRNA it cannot be alternative splice or post transcriptional mod. FA 2018 page 43 has a good illustration. +3  


submitted by sympathetikey(317),

Case Series

A group or series of case reports involving patients who were given similar treatment. Reports of case series usually contain detailed information about the individual patients. This includes demographic information (for example, age, gender, ethnic origin) and information on diagnosis, treatment, response to treatment, and follow-up after treatment.

In this question, it looks like they didn't really focus on the treatment part of it but otherwise, makes sense

sympathetikey  Source: https://www.cancer.gov/publications/dictionaries/cancer-terms/def/case-series +  
ngman  I think another factor is that in case series studies there is no control group vs case-control, cohort...ect +3