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Lena [83]
3 years ago
9

________ are large lymphoid nodules that are located in the walls of the pharynx. ________ are large lymphoid nodules that are l

ocated in the walls of the pharynx. immune complexes spleens tonsils lymph nodes peyer's patches
Biology
1 answer:
goldfiish [28.3K]3 years ago
5 0
I think the correct answer is the third option. Tonsils are large lymphoid nodules that are located in the walls of the pharynx. Tonsils are a part of the lymphatic system and is one of the fighters against infections and the first line of defense for inhaled or ingested pathogens. On their surfaces, they have specialized antigen cells which are called as M cells that would allow the uptake of antigens that is produced by pathogens. The most common condition that could happen to the tonsils would be tonsillitis. Symptoms of these are sore throat, fever and swollen tonsils. It can be caused by different viruses and bacteria.
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Alborosie

Carbon dioxide is heavier than oxygen gas. It therefore displaces the oxygen gas around a flame. Without oxygen, the combustion reaction will stop and the flame will be put out.

Further Explanation:

In order for a combustion reaction to happen, three components must be present: fuel, oxygen, and heat to cause ignition. When one of these three is removed, the combustion reaction will stop.

CO2 fire extinguishers use the difference in mass of the CO2 and oxygen molecules to stop the fire. Since CO2 is heavier, it will displace any oxygen molecules that are around the flame. When this happens, the supply of the oxygen will be limited or cut-off and the fire will eventually be put out because of the lack of oxygen. This ability to displace oxygen is also what makes using CO2 as fire extinguisher quite dangerous for the user since it pushes away the oxygen that is needed for respiration.

Other ways to put out fire include spraying liquids that absorb the heat to avoid spreading the fire further or spraying substances that coat the fuel (flammable materials) to avoid contact with oxygen gas which can lead to further combustion.

Learn More

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Keywords: carbon dioxide, fire, combustion

8 0
3 years ago
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STatiana [176]

Answer:

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The others enzymes have different functions:

DNA helicase is characterized by separating DNA from double strands into single strands and acts in DNA replication.

ATP methylase plays an important role in DNA replication when determining the beginning of replication that has already been replicated or not.

DNA polymerase is an enzyme that is responsible for catalyzing the polymerization of the new strand of DNA during the replication of this molecule.

3 0
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Answer:

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