Studies show that the worldwide age for onset of puberty, particularly early breast development, has begun earlier each decade. In fact, between 1991 and 2006, the age for onset of breast development in girls adjusted by a full year (from a mean age of 10.9 to 9.9). While several theories have emerged about what is causing the earlier presence of female sex characteristics, one prominent theory is that it is due to ubiquitous early exposure to hormones in food products from the agricultural industry. If you were a researcher in this field, which of the following hormones would you look for in food?
a. testosterone
b. LH
c. estrogen
d. FSH
c. estrogen
You might also like to view...
The meshwork that forms the framework of a blood clot is _____
A) chymotrypsin B) fibrin C) thrombin D) prothrombin E) collagen
All free viral particles contain _____
a. a viral genome and a plasma membrane b. both DNA and RNA protected by a viral envelope c. RNA enclosed within a helical rod d. a viral genome protected by a protein coat e. a viral genome protected by a viral envelope
Give three differences between DNA and RNA
What will be an ideal response?
A marine biologist makes a presentation about crustaceans to your biology class. He explains that he has recently received an NSF grant to study sessile crustaceans. You are only aware of one group of sessile crustaceans. This crustacean must be
A. a barnacle. B. a lobster. C. a crayfish. D. the nauplius. E. a shrimp.