#Question id: 797
#Unit 1. Molecules and their Interaction Relevant to Biology
With respect to microRNAs, which, if any, of the following statements, is FALSE?)
A. MicroRNA genes often occur in gene clusters within introns of protein-coding genes and are usually transcribed by RNA polymerase II.
B. Like an mRNA a miRNA is initially produced as a larger precursor RNA that, like the great majority of mRNAs, usually has a 5’ cap and a poly(A) tail.
C. MicroRNAs are produced by germ-line cells only.
D. A miRNA is initially produced as a duplex RNA but in order to work it needs to be converted into a single-strand RNA.
E. MicroRNAs usually work as transcription factors.
#Question id: 1900
#Unit 4. Cell Communication and Cell Signaling
Which of the following statements is TRUE of the human major histocompatibility complex (MHC)?
#Question id: 1650
#Unit 4. Cell Communication and Cell Signaling
Recombination of V, D, and J Ig gene segments:
#Question id: 15393
#Unit 5. Developmental Biology
#Question id: 1474
#Unit 4. Cell Communication and Cell Signaling
Early observations of a cultured cell line indicated that the cells did not exhibit either density-dependent inhibition or anchorage dependence. What do these observations suggest about this cell line?