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Why does most amino acid based hormones bind to cell membrane receptors?
This is because they do not have the ability to pass through the membrane, unlike steroid hormones. Steroid hormones bind inside the cell cytoplasm before docking onto the receptors.
What type of hormones bind to receptors located on cell membrane?
Water-soluble hormones. Insulin and epinephrine
What hormones can enter the target cell and bind to receptors in the nucleus?
steriod hormones - since they are lipophilic and fusses with the membrane to enter teh cell.
Why target cell respond to the hormone while others are uneffected?
Target cells respond to hormones because they have specific receptors for the hormone on their cell membrane or inside the cell. These receptors enable the hormone to bind and initiate a cellular response. Other cells that do not have the specific receptors for that hormone are unaffected because they cannot bind to the hormone or activate the necessary signaling pathways.
What do intracellular receptors do?
The intracellular receptors differ from membrane receptors based on their location. Membrane receptors are usually on the plasma membrane but the intracellular receptors are found inside the cell.
What hormone can enter the target cell and bind to receptors in the nucleus?
steriod hormones - since they are lipophilic and fusses with the membrane to enter teh cell.
What water-soluble hormone would most likely bind to what membrane proteins?
Channel linked receptors bind to neurotransmitters. (also called ion channels and ligand gated ion channels) A ligand is the signal molecule i.e the neurotransmitter. Hormones bind to intracellular receptors because hormones are non polar and can cross the cell's plasma membrane. (also called cytoplasmic receptors)
How does protein hormones reach their target cells?
Usually in blood plasma, which carries them to their target cells. They 'recognize' these cells based on receptors on the cell membranes to which they bind.
How do non steroid hormones control their target cells?
They: Bind to cell membrane receptors Use cAMP as a second messenger and they cause a cascade amplification reaction
What is the Cell that receives and transmit information?
nerve cell or receptors nerve cell or receptors nerve cell or receptors
Why do hormones often cause a cell to elicit multiple responses?
the receptors bind to several hormones at the same time during protein kinase activation, enzymes phosphorylate many other enzymes... A&P
Are hormones target molecules or signal molecules?
Hormones affect target cells because target cells have receptors that bind with certain hormones (they're specific). If a cell does not have a receptor then it is not affected by hormones. Target cells (which do have the receptor for a particular hormone) would be affected by the hormone.
