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What are the structures that allow hormones to bind to their target cells?
Receptors allow hormones to bind to their target cells.
True or false steroid hormones perform accoding to the second messenger mechanism?
steroid hormones are hydrophobic and bind to transport proteins which bind to receptors within the nucleus. hydrophillic hormones bind to plasma membrane receptors and act through second messenger systems
What type of hormones bind to receptors located on the membrane?
Water-soluble hormones. Insulin and epinephrine
What type of hormones bind to receptors located on cell membrane?
Water-soluble hormones. Insulin and epinephrine
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 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.
Do Hormones bind to receptor proteins with high capacity and low affinity?
Hormones do not bind to receptors with high capacity. The major defining properties of a hormone-receptor interaction, and what determines the strength of response is binding affinity and efficacy.
Growth factor hormones such as insulin bind to which type of receptor?
tyrosine kinase receptor!!
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 do hormones produce their effects?
Steroid hormones diffuse into cells being lipid-soluable and may enter any cell in the body. They bind a specific protein molecule - the receptor. This activates mRNA transcription.
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
Is a ligand a hormone?
yes a ligand is anything that can change the conformation of a receptor protein. hormones bind to proteins in the same way ligands do
