<span>When you are pregnant, you do not ovulate because you have already fertilized an egg and it is embedded into the uterus where it is growing into a baby. The body knows this, so it does not shed the uterine lining. The shedding of this lining is triggered by hormones which change when the body is pregnant. During pregnancy, a large amount of progesterone is initially produced which helps to prevent the lining from shedding. If you are not pregnant, your progesterone level will begin to decline at the end of your cycle, triggering the shedding of the lining and the period. Birth control pills alter your hormones to mimic a pregnant state. This will prevent the body from releasing an egg and then shedding the uterine lining.</span>
Not so sure but I would say red blood cells, white blood cells and metastasized cells.
According to the research, the correct option is nucleic acid. An organic molecule, smaller than protein, that contains nitrogen is called nucleic acid.
<h3>What is a nucleic acid?</h3>
They are macromolecules or biological polymers formed by monomers that are joined by phosphodiester bonds (a kind of covalent bond) present in cells rich in carbon, hydrogen, oxygen, nitrogen.
Each nucleic acid comprises a pentose sugar molecule (deoxyribose for DNA and ribose for RNA), and a slightly different set of nitrogenous bases (adenine, guanine, cytosine, and thymine in DNA; adenine, guanine, cytosine, and uracil in RNA).
Therefore, we can conclude that according to the research, the correct option is nucleic acid. An organic molecule, smaller than protein, that contains nitrogen is called nucleic acid.
Learn more about nucleic acid here: brainly.com/question/282770
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<span>Observable</span>
<span>Repeatable
Falsifisable
Measurable </span>