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Reil [10]
3 years ago
13

What changes is pH occur during digestion of our food ?

Biology
1 answer:
mezya [45]3 years ago
5 0
Parietal cells within the stomach lining secrete hydrochloric acid that lowers the pH of the stomach. A low pH (1.5 to 2) activates pepsin. Acetylcholine, gastrin, and histamine stimulate the proton pump in parietal cells to release hydrogen ions and decrease pH.
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What factors allow a pool of 20 amino acids to produce thousands of unique proteins? (select the 3 that apply.)?
dsp73
The possible answers are:
A. Variation in length of the amino acid backbone
B. Each protein is encoded by a distinct gene
C. Variations in the type of peptide bond
D. Variations in the glycosidic linkage
E. Variation in tertiary structure
<span>F. Variations in which amino acids are used

The correct answers are A,E and F
There are only 20 amino acids that make all of the proteins in our bodies. However, there are options for protein variation are almost unlimited.
Firstly, you can vary the number of different amino acid that you use to make a protein.
Secondly, you can also vary the length of the amino acid chain.
And thirdly, when an amino acid chain is formed different parts of the chain interact with each other, bonding chemically, forming different 3-dimensional structures of the protein.
All of this contributes to the vast variation in proteins.</span>
3 0
3 years ago
3. Describe each one of the following types of fractures:
Pavlova-9 [17]
Simple: The bone fracture does not break the skin
Compound: when the bone punctures the skin
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8 0
2 years ago
What effect does viscosity have on blood flow?
Zolol [24]

Answer:

B.) High blood viscosity leads to slower blood flow.

Explanation:

:D

8 0
2 years ago
This chart shows the experimental design of four students who are all observing what kind of bird seed birds tend to eat
IceJOKER [234]

Answer: student 4

Explanation: she is doing the same exact experiment all over again and not changing the things, which can make it even more of an accurate answer

7 0
3 years ago
Read 2 more answers
Which year had the least precipitation?
oksano4ka [1.4K]

Answer:

2000

Explanation:

It is very close between 1990 and 2000, but from what I can see, 2000 had the least precipitation.

8 0
3 years ago
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