Which of the following is an example of positive feedback in the lumen of the stomach? which of the following is an example of positive feedback in the lumen of the stomach? hydrochloric acid converts pepsinogen to pepsin. pepsin works best in the acidic environment produced by hydrochloric acid. pepsin digests molecules of pepsinogen, producing more pepsin. chief cells secrete pepsinogen, which is a precursor to pepsin.

Option (3).

Explanation:

The homeostasis of the body is maintained by the feed back loop system. Two main types of the feedback loop system of the body are positive feedback system and negative feedback system.

Positive feedback system may be defined as the feedback in which the final product increases the output of that product. Pepsinogen is an zymogen that helps in the activation of pepsin enzyme. This enzyme helps in the digestion of protein. The digestion of pepsinogen by pepsin result in the more production of pepsin.

Thus, the correct answer is option (3).

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.