1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
shusha [124]
3 years ago
9

Pepsin is a digestive enzyme. It is made in an inactive form, pepsinogen, which is activated by the acidity of the stomach to se

lf-cleave. The cleaved molecule is active pepsin, which goes on to cleave more pepsinogen molecules, leading to a cascade of rapid pepsin activation. This pathway is an example of:
Biology
1 answer:
Paladinen [302]3 years ago
5 0

Answer: Positive feedback loop

Explanation:

Even before the food reaches the stomach (before ingesting it), the glands of the stomach mucosa begin to release its gastric secretion. The main characteristic of this secretion is acidity, as measured by pH (one of the physiological variables).

This acidity is a result of the presence of hydrochloric acid, which is part of the secretion composition. In addition to it, water, pepsinogen (which will give rise to the enzyme pepsin) and the intrinsic factor. The acid has a function of the protection of the entire system by eliminating microorganisms. It is also responsible for the activation of pepsin (which only occurs with acid pH), the enzyme that digests proteins containing the amino acids leucine or phenylalanine or tryptophan or tyrosine.

The concept of Positive feedback loop states that the body tries to increase the value of a variable (acidity, in the case of pepsinogen) when it is below its optimal value (called a point adjustment) and decreases this value when it is above optimal.

You might be interested in
A group of college students working on a project on bio-gas have found some bacteria in the bio-gas plant. These bacteria can ut
dedylja [7]
I beleive it would be probacteria

6 0
2 years ago
Es que organismos sucede la biparticion o fisión binaria?
4vir4ik [10]

Answer:

la verdad no se perdón ame

6 0
3 years ago
Scientists have recently discovered what could be the largest and oldest living organism on earth, a giant fungus that is an int
k0ka [10]
Th e original sentence is correctly written. Th e giant fungus is described as an interwoven filigree spawned … some 10,000 years ago and extending for more than 30 acres. Th e present participle extending parallels the past participle spawned. A Correct. Th is sentence has the participles spawned and extending in a correct parallel construction. Spawned refers to something that happened in the past, while extending refers to something that continues into the present. 
option A is the answer

 "EXTENDING"

6 0
3 years ago
How does a magnifying glass make an object look bigger and closer?​
ANEK [815]

Answer:

Any converging lens that has a small focal length (several centimeters) can be used as a magnifying glass. The observed object is placed in front of the magnifying glass so that it is located between the lens and the focus (closer to the focus).

Explanation:

It consists of only one condenser lens of small life (a few centimeters).

The observed object is placed between the magnifying glass and its focus (closer to the focus)

The observer sees an upright and enlarged figure of the object.

In order to like clear video ("sharpen"), the magnifier zooms in or out of the subject.

When the character is most clearly seen, we can find ourselves on a given high species.

For a man with normal eyesight, it is about 25 cm.

6 0
2 years ago
In the presence of Oxygen, glycolysis is followed by_____ ?
Oksana_A [137]

The krebs cycle

I know this from a multiple choice question I helped my friend with lol

5 0
3 years ago
Read 2 more answers
Other questions:
  • Which structure is responsible for bringing in the amino acids
    10·1 answer
  • A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a t
    10·1 answer
  • A substance that enters Earth's cycles and does harm to living things is
    7·1 answer
  • Which statement is true of chloroplasts?
    9·2 answers
  • What are three main DNA mutations
    8·1 answer
  • A seedling plant has a section of the stem tip that contains large numbers of cells undergoing mitosis for the purpose of Multip
    14·1 answer
  • The purpose of cellular respiration is to _______
    10·2 answers
  • The Alps are the highest and most extensive mountain range system that lies entirely in Europe.
    6·1 answer
  • What does frequency tell you about a wave?
    6·2 answers
  • What is the half life for the mercury sample?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!