<span>Hormones released during exercise that can cause a person to get a "physical high" are known as endorphins. These hormones are released by the brain's pituitary gland during any period that significant stress is felt. It can be produced during exercise or tiring activities, stress, or pain. They are released so they can help relieve the feelings of stress.</span>
Answer:
c
Cause at the bottom it is cold and up top is warmer
Answer:
There are many receptors for thyroxine on different target cells (tissues), so its effect can be huge
Explanation:
Target cell for a certain hormone is a cell that have hormone receptor specific for that hormone. There are two main types of receptors on target cell:
- cell membrane receptors (also called trans membrane receptors)-usually for peptide hormones, such as insulin
- intracellular receptors (also called nuclear receptors)-usually for steroid hormones, such as testosterone.
Hormone binding to the receptor leads to the signal cascade within the cell, which results in cell response.
Receptors for thyroid hormones are nuclear receptors.
Answer:
these chromatids separate longitudinally to become individual chromosomes.
one chromosomes is composed of and DNA molecule
