#Question id: 1248
#Unit 4. Cell Communication and Cell Signaling
By what mechanism does PI-3 phosphate promote activation of protein kinase B (PKB)?
a. recruiting PKB to the plasma membrane
b. recruiting the activating kinase PDK1 to the plasma membrane
c. releasing inhibition of the catalytic site by the PH domain
d. by the activation of FOXO3A
#Question id: 4091
#Unit 3. Fundamental Processes
To avoid being degraded by nuclear exonucleases, nascent transcripts, pre-mRNA-processing intermediates, and mature mRNAs in the nucleus must have their ends protected. Which of the following mechanism are present in the cell to protect mRNA from degradation?
I. The 5′ cap is protected because it is bound by a heterodimeric nuclear cap-binding complex (CBC), which protects it from 5′ exonucleases and also functions in export of the mRNA to the cytoplasm.
II. 5’-5’ phosphodiester bond in the cap of mRNA plays crucial role in protection
III. The 3′ end of a nascent transcript lies within the RNA polymerase and is thus inaccessible to exonucleases
#Question id: 28521
#Unit 5. Developmental Biology
Which of the following stage of the diploid life cycle commences with the fusion of the haploid egg and sperm to form the single-celled ?
#Question id: 19119
#Unit 8. Inheritance Biology
#Question id: 15387
#Unit 8. Inheritance Biology