A23-year-old woman reports vision loss interspersed with flashing lights before the onset of a very painful headache. during the assessment, she informs the nurse that she has been experiencing these symptoms for the last three months on a weekly basis. these symptoms are those of:

Migraine with aura.

Explanation:

Migraine with aura is a neurological disease manifested by migraine attacks preceded by visual or sensory symptoms. The name aura refers to the sensations you notice just before the headache begins.

The most common manifestation of migraine with aura is the so-called visual aura, which can present as flashes of light, dark mosaic-like spots or bright zigzag images - like when you're walking on a road and seeing that heat zigzag emanating from the ground.  

In other cases, migraine with aura may manifest as numbness or tingling on only one side of the body - depending on the severity of migraine with aura, one may begin with a tingling in one hand and it may spread all over body, falling asleep to only half of the tongue. However, these sensitive manifestations of migraine with aura are rarer. Generally, the aura begins about 30 minutes before migraine and may or may not persist after the pain begins.

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.