Answer:
The estrogenic activity of BPA represents the major endocrine-disrupting effect of BPA and was revealed in 1993 by a study showing that BPA can be released from polycarbonate flasks during autoclaving. BPA is a weak agonist to estrogen receptor β, but compared to estradiol, its activity is 1000-fold less
Explanation:
before mitosis the chromosomes are copied
Answer:
d. wasting it trying to impress Monna Giovanna
Explanation:
Federigo degli Alberighi happened to be in deep love and crush for a woman who was called Monna Giovanna. He spent everything (all of his family fortunes)including his entire money just to draw her attention and cause her to have feelings and direct her affection, love and interest to him but it failed as Monna imstead showed little or no interest in him. This resulted in Federigo predicament -a wealthy man turned to a poor man after spending all his family fortunes on trying to woe her. As a result, Federigo degli Alberighi decided to return to his farm to hawk as a means of livelihood and survival.
Answer:
Heart valves or the closure of the mitral and tricuspid atrioventricular (AV) valves at the beginning of ventricular systole and the closure of the aortic valve and pulmonary valve at the end of ventricular systole.
Explanation:
The heart tone “lub,” or S1, is caused by the closure of the mitral and tricuspid atrioventricular (AV) valves at the beginning of ventricular systole.
The heart tone “dub,” or S2 ( a combination of A2 and P2), is caused by the closure of the aortic valve and pulmonary valve at the end of ventricular systole.
Stem cells have the ability to replace damaged cells and treat disease. ... Stem cells, if they can be directed to differentiate into specific cell types, offer the possibility of a renewable source of replacement cells and tissues to treat diseases including Parkinson's, stroke, heart disease and diabetes.
