← Cell Communication Test
5 Written Questions
5 Matching Questions
- Signal Amplification
- Signal Transduction Pathway
- Vibrio Cholerae
- Second Messenger
- a A series of steps by which a signal on a cell's surface is converted into a specific cellular response.
- b secretory diarrhea; a toxin stimulates adenylate cyclase to produce cAMP
- c A process in which cascade-proteins in active form that activate more than one in the pathway
- d A second messenger that functions as an intermediate between certain nonsteroid hormones and a third messenger, a rise in cytoplasmic Ca2+ concentration.
- e A small, nonprotein, water-soluble molecule or ion, such as calcium ion or cyclic AMP, that relays a signal to a cell's interior in response to a signal received by a signal receptor protein.
5 Multiple Choice Questions
- Chemical messengers, mostly those manufactured by the endocrine glands, that are produced in one tissue and affect another
- A cellular reaction to a signal molecule
- A protein that is involved in cell differentiation and growth
- An electrical signal along a nerve cell releases chemical signal in form of neurotransmitters and stimulates a cell across synapse
- The changing of a receptor protein's shape due to the binding of the signal molecule
5 True/False Questions
Scaffolding Proteins → A type of large relay protein to which several other relay proteins are simultaneously attached to increase the efficiency of signal transduction.
Adenylyl Cyclase → An enzyme that converts ATP to cyclic AMP in response to a chemical signal.
Phosphorylation Cascade → A series of different molecules in a pathway are phosphorylated in turn, each molecule adding a phosphate group to the next one in line
Ion Channel Receptor → Opens and closes with stimulation from a neurotransmitter and allows the flow of an ion in and out of a cell.
Diacyglycerol (DAG) → Cyclic adenosine monophosphate, a ring-shaped molecule made from ATP that is a common intracellular signaling molecule (second messenger) in eukaryotic cells (for example, in vertebrate endocrine cells). It is also a regulator of some bacterial operons.