Which of the answer choices is an example of negative feedback altering homeostatic control? a. the concentration of salt in a person's urine increases after that person eats a large bag of salty chips. b. a person with a bacterial infection runs a fever and his body temperatures rises and stays elevated for several days. c. the production of oxytocin (a hormone) increases in a pregnant woman's body as oxytocin levels in her body rise. d. a person's heart rate remains elevated over the course of a long run.

a. The concentration of salt in a person's urine increases after that person eats a large bag of salty chips.

Explanation:

Homeostasis is the quality of the body to maintain the normal state of the body with respect to changes occurring in the external environment.

The homeostasis is maintained by involving the negative feedback loops. These loops function in opposite to the stimulus, that triggers them. For example, if the body temperature is high, the negative feedback loop will function to bring the body temperature down towards the set point, or the target value.

The homeostasis can regulate the ion concentration. When the body acquires salt by eating chips, the urge to expel salt through urine also increases. Hence, the ionic concentration of salt is maintained through negative feedback loops altering homeostasis.

answer:

there is no cure for hiv, although antiretroviral treatment can control the virus, meaning that people with hiv can live long and healthy lives. most research is looking for a functional cure where hiv is reduced to undetectable and harmless levels in the body permanently, but some residual virus may remain. most commonly hiv-antivirals are taken also known as nucleoside/nucleotide reverse transcriptase inhibitors (nrti's).

answer:

gygu hj j uy   b

explanation:

08: 21

read the excerpt from "the tell-tale heart.”

object there was none. passion there was none. i loved the old man. he had never wronged me. he had never given me insult. for his gold i had no desire. i think it was his eye! yes, it was this! he had the eye of a vulture—a pale blue eye, with a film over it. whenever it fell upon me, my blood ran cold; and so by degrees—very gradually—i made up my mind to take the life of the old man, and thus rid myself of the eye forever.  

read the excerpt from "the black cat.”

beneath the pressure of torments such as these, the feeble remnant of the good within me succumbed. evil thoughts became my sole intimates—the darkest and most evil of thoughts. the moodiness of my usual temper increased to hatred of all things and of all mankind; while, from the sudden, frequent, and ungovernable outbursts of a fury to which i now blindly abandoned myself, my uncomplaining wife, alas! was the most usual and the most patient of sufferers.

by revealing the narrator’s deepest thoughts, the author