Hey there,
Your question states: Explain why it makes sense that the levels of estrogen and progesterone are low in the blood of a female during menstruation.I'm a guy, but I just happen know this information.The reason why the levels of estrogen and progesterone are low in the blood of a female during menstruation is to basically produce (FSH) or follicle stimulating hormone. We need to remember that menstruation is part of the menstrual cycle, which to would help a women/teen to handle/establish a well and healthy pregnancy, (if that makes sense). The average cycle would basically be i think about like 25-28 days. And one thing to remember is that when there is a <span>ripening egg,this causes estrogen levels to rise. This would be the reason why its low.
Hope this helps</span>
Answer: The correct answer for the fill in the blank is A) Zero.
According to Mendel's law of dominance, in a cross between parents that are true breeding for a contrasting trait (like plant with pure purple and white flowers), only one form is expressed in the next generation and that form is called dominant trait.
As per the Mendelian inheritance, purple flower color is dominant over white flower color. When parents that are pure breeding for purple and white flower ( PP and pp) are crossed, they will produce all purple flowers ( Pp) in the first generation as purple is dominant trait.
Thus, percent of offsprings with white flowers is zero.
The answer is D. Phosphorus and nitrogen
The three main elements are C, H and O. These two are elements other macro-molecules may not have
All of the above are correct answers
I believe Formed in our bones, hydroxyapatite crystals are mineral complexes comprised of calcium and phosphorus. The hardness and rigidity of bone is due to the presence of mineral salt in the osteoid matrix, which is a crystalline complex of calcium and phosphate. Calcified bone contains about 25% organic matrix, 5% water and 70% inorganic mineral.
