Openstax Biology 2E Chapter 9 Study Questions
- If calcium levels are low, cAMP activity increases which leads to synthesis and release of parathyroid hormone. cAMP acts as a(n)
- Teeth can have a biofilm formed on the surface. Cell signaling will
- Vibrio fischeri are bioluminescent when the population reaches a certain size. This is an example of
- What describes transcription factors?
- control of gene expression
- A common theme in many pathways is a cascade of similar enzymes acting on each other in sequence. For instance, MAP kinase kinase kinase adds a phosphate to MAP kinase kinase, which adds phosphate to MAP kinase, which adds phosphate to another substrate. \n What is the benefit of using a cascade of enzymes?
- A cascade amplifies output from the original signal.
- Cell surface receptors have three domains with different roles. Match each role to the domain that is responsible.
| 2 | Sends conformational change through the plasma membrane |
|---|
| 3 | Interacts with downstream signaling cascade |
| 1 | Binds the signaling molecule |
- Extracellular domain
- Hydrophobic domain
- Cytosolic domain
- Protein phosphorylating enzymes help regulated gene expression by
- Diacylglycerol and inositol triphosphate are released from phosphatidylinositol biphosphate by .
- Since plants have rigid cell walls formed from cellulose, transfer of information and materials between cells is prohibited.
- is the substrate for adenylyl cylcase.
