Explain why some cells in a females body respond to reproductive hormones while other cells do not.

As with any cellular signal, only cells that are expressing receptors on their cell surface for a particular signal will be effected. In the case of your question, only cells in a womens body that are expressing specific receptors for reproductive hormones will respond to those hormones.

How some cells know to have receptors and others do not is a mystery to science still. It is likely determined by a combination of environmental and genetic cues during development.

well, it depends. it is natural to not fall asleep before 11: 00 p.m. teens need about 8-10 hours of sleep each night to function best.

enjoy your day!

the more fit you are, the faster the recovery. your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. this “recovery heart rate” is measured as part of an exercise stress test.