stope dte neud of coolinig proess 10. For each of the following analogies of fee
ID: 3508581 • Letter: S
Question
stope dte neud of coolinig proess 10. For each of the following analogies of feedback mechanisms, indicate whether it is an exan a negative or positive feedback loop. Although some of the examples are not physiological processes; the basic principles are the same. (1) A snowball rolling down a hill becomes larger and larger, making it roll faster and become la a. Postwiu feud baek Loo p b. Iron is absorbed from digested foodstuffs through receptor-mediated Pinocytosis in the small intestine. When iron concentrations in the blood rise above the setpoint, excess iron accumula the cells of the small intestine. This excess iron itself functions to suppress the further active absorption of iron. Determined to earn an A in Human Physiology, you decide to seek help from a tutor. The tuto helpful, but very expensive. In order to pay the tutor you must start working nights. Workin reduces your study time, and your grades fall in the course. Thus, you spend more time with t tutor, meaning you have to earn more money. As a result of working more, your grades in the fall even more. You decide to spend even more time with the tutor. (1) c.Explanation / Answer
A.Positive feedback loop.
Rolling makes snowball become larger and larger making it roll faster. Thus more the rolling , more larger will become the snow ball.
B. Negative feedback loop.
More iron within the cells, less iron will be absorbed. Thus increase in iron concentration in cells decreases iron absorption from blood.
C. Positive feedback loop.
The more you work and more you earn and the more you earn, more you can pay to tutor. But the more you work, the more you fall in grades.
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