In nature, what is the order of events in processing the productof the gene for insulin? a. transcription of the two insulin genesA and B, translation, and posttranslational joining of the twopolypeptides b. removal of large mRNA sequences by RNA editing,followed by splicing of the products of the two insulin genes c.cleavage of 24 amino acids from the N terminus to form proinsulinthat is subsequently cleaved to make A and B chains d. removal of 5leader sequence from the mRNA, and splicing out of a large centralintron to produce the mRNA that codes for the final form ofpolypeptide e. cleavage of 35 amino acids from the middle of thepolypeptide to make two chains that are then joined by disulfidebonds
In nature, what is the order of events in processing the productof the gene for insulin? a. transcription of the two insulin genesA and B, translation, and posttranslational joining of the twopolypeptides b. removal of large mRNA sequences by RNA editing,followed by splicing of the products of the two insulin genes c.cleavage of 24 amino acids from the N terminus to form proinsulinthat is subsequently cleaved to make A and B chains d. removal of 5leader sequence from the mRNA, and splicing out of a large centralintron to produce the mRNA that codes for the final form ofpolypeptide e. cleavage of 35 amino acids from the middle of thepolypeptide to make two chains that are then joined by disulfidebonds
For unlimited access to Homework Help, a Homework+ subscription is required.
Related textbook solutions
Related questions
If one is testing a goodness of fit to a 9:3:3:1 ratio, how many degrees of freedom would be associated with the Chi-square?
1
2
3
4
not enough information to determine
Which of the following choices does not describe a type of posttranslational modification of proteins?
The amino terminal methionine may be removed. |
Glycoproteins are produced by the attachment of phosphates to newly synthesized proteins. |
Precursor proteins are cleaved and trimmed by protease enzymes to produce a functional protein. |
Molecular chaperones help proteins fold correctly. |
Amino acids in the amino terminal of the protein can be acetylated. |
A eukaryotic DNA sequence that affects transcription at distant promoters is called a(n)
long distance promotor |
regulator |
operon |
enhancer |
DNA methylation may be a significant mode of genetic regulation in eukaryotes. Meythylation refers to
altering RNA polymerase activity by adding methyl-groups |
changes in DNA-DNA hydrogen bonding |
altering translation activity via methylated tRNAs |
adding methyl groups to certain cytosines in DNA |
If a nucleotide lacks a 3â-OH group, what will happen?
itâs transformed into RNA |
another nucleotide can bond at the 3â site during replication |
replication will halt |
no effect |
Which of the following describe posttranscriptional modifications commonly seen in mRNA of eukaryotes?
5â capping, 3â-poly-A tail addition, splicing |
3â capping, 5â poly-A tail addition, splicing |
heteroduplex formation |
5â capping, 3âpolyA tail addition, removal of exons |
In birds, females are the heterogametic sex. This means that
females have chromosomes in pairs. |
emales produce eggs. |
females determine the gender of their offspring. |
males have two identical sex chromosomes (ZZ) An anticodon on a tRNA has the sequence 5'âGCAâ3'. What would be the effect on translation if the G in the anticodon were mutated to a U?
|