The nucleophile of the second step of spliceosome-mediated pre-mRNA splicing is the:
A. 2' hydroxyl of the branch point adenosine.
B. 3' hydroxyl of a free guanine nucleotide.
C. 3' hydroxyl of the 5' splice site exon.
D. 2' hydroxyl of the 3' splice site intron.
C
You might also like to view...
In which type of plant tissue does photosynthesis take place?
1.apical meristems 2.xylem 3.parenchyma 4.collenchyma
A neurologist diagnoses a patient with damage to the hippocampus. This observation is consistent with the difficulties the patient reports with
A. effectively coordinating movements once initiated. B. maintaining a steady and regular heartbeat. C. planning movements. D. forming memories of recent events. E. perceiving tactile stimulation from different regions of their body.
In respiration, beta oxidation involves the _____
A) oxidation of glucose B) oxidation of pyruvate C) regulation of glycolysis D) breakdown of fatty acids
Match the following
200g A) 2.0 x 10^-8 ug B) 2.0 x 10^8 ug