How can cells that have the same receptor present a different response?

What event is common to ALL signal transduction pathways?     A)  Calcium ions bind to/ activate proteins.     B)  Cyclic nucleotides are formed.     C)  Proteins change in shape.     D)  Phosphates are transferred between molecules.     E)  Protons are transferred between molecules.

The t-SNARE proteins are anchored to what component of the axon terminal region? The neurotransmitter-filled vesicles The extrasynaptic region The active zone The voltage-sensitive Ca2+ channels

Viagra works on which intra-cellular signaling pathway? a)PLC, DAG, PKC b)RTK, RAS, MAPK c)GPCR, PKB, calmodulin d)Acetylcholine, Nitric Oxide, cGMP e)GPCR, cAMP, PKA

Which type of receptor alters the cytoskeleton when a ligand binds to it? Integrin receptor G protein-coupled receptor (GPCR) O Receptor-enzyme O Receptor-channel Submit Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining This either opens or closes a channel, or alters intracellular enzyme activity in response to ligand binding.

Generally, for a positive feedback arc to cause a change of a physiological variable, where must be the receptor? Multiple answers: Choose all of the relevant answers from the choices below. answer choices a)Intracellular fluid b)Intersitial fluid c)Extracellular fluid d)External environment (e.g., mother's nipple) e)Blood plasma   2)Which of the following is NOT true regarding negative feedback loops and homeostasis? answer choices a. Homeostatic control systems cannot maintain complete constancy of the internal environment b. The set point of some variable can be reset c. It is always possible for physiological variables to be maintained in a relatively constant manner using homeostatic control systems d. The stability of an internal environment variable is achieved by balancing inputs and outputs e. In negative feedback systems, a change in the variable being regulated brings about responses that tend to move the variable in a direction that is opposite to the…

Can the number of receptors in a cell’s membrane change over time?