During siRNA-mediated gene silencing within the homo sapiens cell, the RNA-induced Silencing Complex (RISC) is composed of which of the following protein arrangements?

#Question id: 1874

#Section 2: General Biology

Which of the following is the single immunodeficiency disease that most profoundly affects CD4-positive T-cells?

#Question id: 74

#Section 2: General Biology

The enthalpy and entropy of the initial and final states of a reacting system are shown in the table. Calculate the change in free energy for the reaction when the temperature is 4°C.

#Question id: 14412

#Section 2: General Biology

#Question id: 14329

#Section 5: Bioprocess Engineering and Process Biotechnology

During exponential phase in batch culture, the growth rate of a culture is proportional to the concentration of cells present. When Streptococcus lactis bacteria are cultured in milk, the concentration of cells doubles in45 min. If this rate of growth is maintained for 12 h, what is the final concentration of cells relative to the inoculum level?

#Question id: 3898

#Section 3: Genetics, Cellular and Molecular Biology

Which one of the following classes is expressed in the unfertilized egg and is involved in directing the spatial organization of the Drosophila embryo early in development?