#Question id: 3626
#Unit 8. Inheritance Biology
The major blood group locus in humans produces types A (genotypes AA or AO), B (genotypes BB or BO), AB (genotype AB), or O (genotype OO). Parents who are type AB and type O, what are the possible blood types of their offspring?
#Question id: 11292
#Unit 10. Ecological Principles
In an pond ecosystem the _____ is always greater than the _____ .
(a) number of primary producers . . . number of secondary consumers
(b) biomass of secondary consumers . . . biomass of primary consumer
(c) assimilation efficiency of primary consumers . . . assimilation efficiency of secondary consumers
(d) biomass of primary producers . . . biomass of primary consumers
#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: 10359
#Unit 6. System Physiology – Plant
Nitrate reductases of higher plants are composed of two identical subunits, each containing three prosthetic groups. Which of the following is not the prosthetic group of nitrate reductase;
#Question id: 19235
#Unit 12. Applied Biology