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klemol [59]
3 years ago
14

Antibodies that act against a particular foreign substance are released by ________. antibodies that act against a particular fo

reign substance are released by ________. medullary cords plasma cells t lymphocytes lymph nodes
Biology
1 answer:
MissTica3 years ago
4 0
The correct answer is "plasma cells". 

Plasma cells are differentiated or mature B cells capable of producing antibodies against a particular foreign substance. B cells are stimulated to differentiate into plasma cells when it binds to two receptors of helper T cell; having the T cells "help" the B cells to differentiate to plasma cells. These T cells have the antigenic information passed to them by antigen presenting cells such as dendritic cells and these will be passed to the B cells and plasma cells will produce antibodies against this specific antigen.
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erik [133]

Answer:

This question lacks options, options are:

a) The partial pressure of oxygen

b) Acidity

c) The partial pressure of carbon dioxide

d) Temperature

e) BPG

The correct answer is a. The most important factor that determines the percent of oxygen saturation of hemoglobin is <u>The partial pressure of oxygen </u>.

Explanation:

Hemoglobin is an oxygen transport protein. Partial Oxygen Pressure (PaO2), measures the pressure of dissolved oxygen in the blood, that is, it shows how well oxygen passes from the lungs into the bloodstream. A high partial pressure of oxygen in the blood produces an almost complete saturation of hemoglobin, which indicates the maximum amount of oxygen that combines, but when PaO2 is reduced, so is hemoglobin saturation, when saturation is below 90% hypoxemia occurs, that is, the level below normal blood oxygen levels.

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3 years ago
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Charra [1.4K]
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Alona [7]

Answer:

<h3><u>Protons & Nucleons</u> are the 2 subatomic particles make up the nucleus of an atom.</h3>

Explanation:

7 0
2 years ago
An ecologist is studying Dunaliella Salina a single celled algae in a local pond. The con is located near construction site in t
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Answer:

The electron microscope

Explanation:

<u>The microscope that would be best suited to study the inner structure of the chloroplast would be the electron microscope.</u>

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