As food travels through the digestive system, it is exposed to a variety of pH levels. The stomach has a pH of 2 due to the presence of hydrochloric acid (HCI) and the small intestine has a pH ranging from 7 to 9. HCl converts pepsinogen into pepsin, an enzyme that digests proteins in the stomach. Which of the following most likely happens to pepsin as it enters the small intestine? a) It begins to replicate
b) Its shape changes to enguf large proteins
c) Its activity increases to digest more proteins
d) It denatures

C It becomes inactive

Explanation:

Enzymes have an ideal pH, at which they best function. Many enzymes cannot function

at all outside their ideal pH range. Pepsin functions best in the extreme acid

environment of the stomach and will, therefore cease to function in the much higher pH

of the small intestine.

the answer to your question is:

c. complementary base-pairing

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.