The oral contraceptive pill, informally called "the pill" contains an estrogen and progesterone or a synthetic mimic of this hormone. the combination of these two hormones taken in the pill and circulating in the blood works becauseselect one:
a. the hormones cause the woman's body to mimic the activities of a pregnancy and disrupt the ovarian cycle, preventing ovulation. b. the hormones cause a thickening of the mucus plug at the cervix that prevents sperm from penetrating the womb and reaching the ovulated egg. c. the hormones create an acid condition in the vagina that acts as a spermicide. d. the hormones prevent the proliferative or secretory phase of the menstrual cycle and the embryo will have no place to implant.

a. The hormones cause the woman's body to mimic the activities of a pregnancy and disrupt the ovarian cycle, preventing ovulation

Explanation:

Pills either as real subtance or synthetic form(Placebo) exhibit effect on ovulation ,by suppressing it thereby mimicking pregnancy.

Since ovulation is suppressed fertilization can not take place,no egg/ovum is released to be fertilized by the sperms.

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

b - the respond is innate and varies over time.

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