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Steroid hormones (e.g., cortisol, estrogen, testosterone) are able to cross the cell membrane because they are lipid-soluble. Once inside the cell, they bind to specific receptors in the cytoplasm or nucleus to initiate gene transcription and cellular responses.
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What receptor has a ligand that can cross the cell membrane that binds?
Intracellular
Extracellular membrane receptors are used by which types of hormones?
Extracellular membrane receptors are used by peptide hormones and protein hormones, which cannot pass through the cell membrane due to their size or composition. These receptors are located on the cell surface and trigger a signaling cascade inside the cell upon hormone binding, leading to physiological responses.
What is cell membrane permeability?
It is the ability of the membrane to allow ions and/or particles to cross.
What is the process where in the diffusion of water cross a cell membrane?
Osmosis
What are two structures that a material would have to cross to enter the cytoplasm of a plant cell?
In order to enter the cytoplasm of a plant cell, a material would have to cross the plasma membrane and then the cell wall. The plasma membrane regulates what enters and exits the cell, while the cell wall provides structural support and protection.
What receptor has a ligand that can cross the cell membrane that binds?
Intracellular
What needs to get into the cell and cross the cell membrane?
Oh things like food, oxygen, ions, and even hormones.
Why must some hormones bind to membrane receptor on a target cell's surface in order to activate it?
Some hormones are unable to cross the cell membrane due to their size or chemical properties, so they must bind to a membrane receptor on the cell's surface to propagate their signal into the cell. This binding triggers a cascade of intracellular events that ultimately lead to the cell's response to the hormone.
What ions are positively charged and can cross back and forth across neuron and cell membrane?
There are two ions that can cross the cell membrane. The positively charged sodium and potassium ions can cross back and forth across the neuron cell membrane.
What is the ability of certain hormones to attach to a cell determined by?
receptor molecules in the cell membrane
What type of hormones bind to receptors located on cell membrane?
Water-soluble hormones. Insulin and epinephrine
What membrane protein is responsible for binding hormones that can switch on a cell?
The membrane protein responsible for binding hormones that can switch on a cell's response is typically a hormone receptor. These receptors are often found on the surface of the cell membrane and can activate signaling pathways inside the cell in response to hormone binding.
Extracellular membrane receptors are used by which types of hormones?
Extracellular membrane receptors are used by peptide hormones and protein hormones, which cannot pass through the cell membrane due to their size or composition. These receptors are located on the cell surface and trigger a signaling cascade inside the cell upon hormone binding, leading to physiological responses.
The ability of certain hormones to attach to a cell is primarily determined by the?
receptor molecules in the cell membrane
What hormones can enter the target cell and bind to receptors in the nucleus?
Steroid hormones, such as estrogen and testosterone, are able to enter the target cell and bind to receptors in the nucleus. These hormones are lipid-soluble, allowing them to pass through the cell membrane and directly interact with nuclear receptors to regulate gene transcription.
What is cell membrane permeability?
It is the ability of the membrane to allow ions and/or particles to cross.
Why does most amino acid based hormones bind to cell membrane receptors?
Most amino acid-based hormones are hydrophilic molecules that cannot pass through the cell membrane. Therefore, these hormones bind to specific cell membrane receptors to initiate a signaling cascade within the cell. This binding triggers a series of events that ultimately lead to changes in gene expression, protein synthesis, or other cellular responses.
