What do you know about an inhibitor of the estrogen receptor? What other information is related to the question?
What will be an ideal response?
The nonpolar structure of steroid hormones like estrogen allows these hormones to cross the
membrane and bind to intracellular receptors. The location of steroid hormone receptors prior to hormone
binding is cytoplasmic, but their primary site of action is in the nucleus. Binding ofthe hormone to the
receptor causes the complex to shift from the cytoplasm to the nucleus. As the ligand–receptor complex
makes it all the way to the nucleus of the cell, these receptors are often called nuclear receptors.
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In the cellular slime mold Dictyostelium, cAMP is the signal that causes cells to ________
a. aggregate b. all of the choices c. change their gene expression d. differentiate into components of a stalk or spores
Which molecule contains more energy?
a. ATP b. ADP
What form of energy do all living organisms use?
A) sunlight B) radiation C) chemical bonds D) nuclear energy E) heat
Organisms "X" and "Y" are suspected to be the same species. Which of the following will provide the
ultimate proof? a. interbreeding b. anatomy c. physiology d. ecology e. behavior