Puberty is caused by the release of follicle stimulating hormone and luteinizing hormone from the pituitary gland. these hormones are delivered to the ovary in girls and initiate the monthly release of mature egg cells. this is an example of what mechanism of regulation of gene expression?
a. a typical signal transduction pathway
b. homeotic genes
d. activation of micro rnas
The onset of puberty in girls by the release of these two hormone is an example of typical signal transduction pathway
Specifically Luteinizing Hormone (LH) along with the Follicle stimulating Hormone (FSH) released from pituitary gland gets attached to the receptors present in the cells of ovary and generate a series of chemical reaction or cascade of biochemical reaction in a cell (activation of secondary messengers like cAMP) to produce estrogen and progestrone that will help in follicle formation and ovum maturation.
A typical signal transduction pathway
Explanation: This involves the binding of extracellular signaling molecules and ligands to receptors, located on the surface or inside the cell that can trigger events in the cell, to have a response. Based oh chemical reactions when the cell attaches a receptor of the cell membrane.
that is wrong, its not thymus.
when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.