Question

the table below lists a variety of stimuli that are counteracted by negative feedback loops. the table also lists various responses.
match each response to the stimulus it most directly counteracts.

stimulus
co₂ levels in the blood increase.
body temperature increases.
glucose levels in the blood increase.
water levels in the body increase.

response
sweat production increases.
cellular uptake of sugars increases.
water output in urine increases.
breathing rate increases.

Explanation:

• When \(CO_2\) levels in the blood increase, the body's response is to increase the breathing rate. This is because breathing out expels \(CO_2\) from the body.
• When body temperature increases, sweating is a mechanism to cool the body down. As sweat evaporates from the skin, it takes heat away from the body.
• When glucose levels in the blood increase, cells take up more sugar (glucose) to lower the blood - glucose concentration. This is often regulated by insulin in the body.
• When water levels in the body increase, the body increases water output in urine to maintain a proper water balance.

Answer:

• \(CO_2\) levels in the blood increase - Breathing rate increases
• Body temperature increases - Sweat production increases
• Glucose levels in the blood increase - Cellular uptake of sugars increases
• Water levels in the body increase - Water output in urine increases