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You inject a frog oocyte with two globular proteins, one 15 kDa and the other 100 kDa, both of which lack nuclear localization signals. Which protein, if any, will enter the nucleus?

How can epigenetic changes explain why identical twins develop different physical characteristics later in life?

Why do actively growing cells have larger nucleoli than resting cells?

How does gene regulation by lncRNAs differ from regulation by microRNAs?

How would mutational inactivation of the nuclear export signal of a protein that normally shuttles back and forth between the nucleus and the cytoplasm affect its subcellular distribution?

Which statement about the attachment of amino acids to tRNAs is false?

How can glucose be transported against its concentration gradient without the direct expenditure of ATP in intestinal epithelial cells?

Which activated initiation factor do tRNA molecules, other than the initiator methionyl tRNA, need to bind to before tRNA can join the complex with the 40S ribosomal subunit?

If you examined the histone modifications throughout a genome, how would you distinguish enhancers from promoters?

Which step is considered the final aspect of processing an RNA molecule?