THE CELL
CELL COMMUNICATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Binding of a ligand to a receptor tyrosine kinases causes a direct change in ion distribution across a membrane
|
|
|
Ligand-gated ion receptors are receptors for a group of signaling molecules called growth factors
|
|
|
G protein-coupled receptors (GPCRs) are the least diverse type of cell receptor
|
|
|
Intracellular receptors can be found in the cytoplasm or nucleus
|
Detailed explanation-1: -Intracellular receptors are receptor proteins found on the inside of the cell, typically in the cytoplasm or nucleus.
Detailed explanation-2: -Intracellular receptors are generally reserved for highly lipid-soluble drugs such as anti-inflammatory steroids, thyroid hormones, and vitamin A or D. These receptors belong to a superfamily of DNA-binding proteins.
Detailed explanation-3: -The correct answer here is c. It identifies particular nucleotide sequences in DNA. DNA binding regions of intracellular receptors must inherently bind to a specific sequence based on their amino acid sequence specificity.
Detailed explanation-4: -Internal receptors, also known as intracellular or cytoplasmic receptors, are found in the cytoplasm of the cell and respond to hydrophobic ligand molecules that are able to travel across the plasma membrane.