Put the whole chapter side by side. See what each method of birth control stops and what it does not. Learn how the hormones of the pill act on the monthly cycle, and how the assisted reproductive technologies differ, step by step. The lessons end in the traps that questions often use.
3 lessons, about 1 h 15 min3 simulations10 problems3 practice questionsPython in every lesson
No method of birth control is best at everything. Each blocks one step, suits one user, can or cannot be undone, and does or does not protect against infection. This lesson sets the methods side by side and shows how failure rates are read.
The pill gives the body hormones from outside. They keep the hormones of the pituitary low, so there is no surge of LH and no ovulation. This lesson reads a model of the monthly cycle with and without the pill, and shows why the days without a pill bring a bleeding.
The assisted reproductive technologies differ in where the gametes meet and in what is placed in the woman. This lesson sets them side by side, and uses exact counting to show how the number of embryos changes the chance of a pregnancy and of twins.
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