5098000=5.089 times 10^6=
the answer is
B cells produce antigen
t cell are helper,killer,memory cells
they hold memory of pathogens i the system
Answer:
The correct answer is A. inflammation
Explanation:
Inflammation is the defense mechanism of the immune system which is non-specific and part of the innate immunity of the body. Inflammation is the reaction against any cell injury.
Inflammation is categorized by heat, pain, redness(erythema), and swelling(edema). These changes occur because of the result of the increase in local blood vessel diameter which leads to increase of flow of blood that results in heat and redness.
The transport of fluids and proteins takes place at the injury site which causes swelling and pain. Therefore the right answer is A. inflammation.
It doesn't show the choices but, Biostimulation<span> involves the modification of the environment to stimulate existing bacteria capable of bioremediation. </span>
No, the sickle-cell anemia allele won't be eliminated by natural selection.
Sickle-cell anemia trait is controlled by a single gene and the allele (S) for sickle-cell anemia is a harmful autosomal recessive.
It is caused by a mutation in the normal allele (A) for hemoglobin (a protein on red blood cells).
Heterozygotes (AS) with the sickle-cell allele are resistant to malaria, a deadly tropical disease. It is common in many African populations.
In these areas, (S) carriers have been naturally selected, because their red blood cells, containing some abnormal hemoglobin, tend to be in sickle shape when they are infected by the malarial parasite.
Therefore, they are more likely to survive and reproduce. This keeps the S allele in the gene pool.
Learn more about Sickle-cell anemia on
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