7. In an experiment, a microbiologist put equal numbers of each of the following organisms into a flask of sterile broth, consisting mostly of sugar and a few amino acids. She then placed the flask in the dark. Which of the organisms would be most likely to survive? (A) photoheterotrophs (B) photoautotrophs (C) chemoheterotrophic bacteria (D) cyanobacteria (E) thermoacidophilic bacteria

11. If a modified form of GTP that CANNOT be enzymatically converted to GDP were added to a culture of cells, the likely result would be (A) the inhibition of pathways stimulated by tyrosine-kinase receptors (B) the inactivation of G-protein-coupled signaling pathways (C) the inactivation of ligand-gated ion channels (D) receptor tyrosine kinases would be stimulated by the additional phosphate groups present in the modified GTP (E) that the activated G proteins would remain locked in the "on" position, transmitting signal even in the absence of a signaling molecule

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