#Question id: 3948
#Unit 3. Fundamental Processes
The following complex of macromolecules is found in a cell: DNA attached to RNA polymerase, attached to a growing chain of RNA, attached to a ribosome, attached to two tRNAs, attached to a growing chain of amino acids. The cell must be:
#Question id: 15561
#Unit 12. Applied Biology
#Question id: 34109
#Unit 2. Cellular Organization
#Question id: 4044
#Unit 3. Fundamental Processes
Which of the following sigma specificity factors is involved in middle gene transcription during SPO1 phage infection of bacteria?
#Question id: 2983
#Unit 2. Cellular Organization
Cell cycle is regulated by master regulators (cyclin and CDKs). In vertebrates, G1 CDK activity rises during G1 and is stimulated by the presence of growth factors. When signaling from growth factors is sustained, the resulting cyclin D–CDK4/6 complexes begin phosphorylating Rb, releasing some E2F, which stimulates transcription of the genes encoding cyclin E, CDK2, and E2F itself. In a particular cell type there is a mutation in Rb such that it cannot be phosphorylated. What will be the correct expression pattern of cyclin E in these cells after mitotic stimulation?