BCH4024 OC Sp25 E2 Q38: Using the chart provided as a guide, consider Niemann-Pick disease.  With Niemann-Pick, the deficient enzyme is sphingomyelinase.  In this chart, sphingomyelins differ from the other sphingolipids in that they are:

BCH4024 OC Sp25 E2 Q46: By what mechanism(s) could the epinephrine signaling pathway get turned off?

BCH4024 OC Sp25 E2 Q41: Common genetic causes of severe adult obesity are loss-of-function mutations in the melanocortin signaling pathway. One effect of these mutations is aberrantly low levels of activated protein kinase A (PKA) in certain cells of the hypothalamus. What type of mutation would most likely produce low levels of activated PKA?

BCH4024 OC Sp25 E2 Q16: A key intermediate(s) in both the CPS-I and CPS-II reactions is/are ___________________________.

BCH4024 OC Sp25 E2 Q24: In the human small intestine, _____________ is needed to initiate zymogen activation.

BCH4024 OC Sp25 E2 Q32: The image shows a simplified way in which calcium ions can act as second messengers after ligand-gated calcium channel open. The gradient that allows calcium ions to flow freely through the channel was most likely established by:

BCH4024 OC Sp25 E2 Q26: CTP synthases require __________ as a substrate.

BCH4024 OC Sp25 E2 Q31: Glycolipids form a cell structure that is known as the glycocalyx, which is important in cell-cell adhesion and recognition, signaling, cell migration, immune response, and wound healing. Glycolipids display which of the following on the surface of the cell?

BCH4024 OC Sp25 E2 Q47: Binding of insulin to the insulin receptor leads to the activation of several signaling pathways. In the pathway where insulin acts as a growth factor to stimulate gene transcription, how is Ras activated?

BCH4024 OC Sp25 E2 Q3: Aside from making urea, the Urea Cycle plays an important role in the regulation of ________.