Answer:
Mark pathogenic cells for destruction. (Ans. B)
Explanation:
Antibodies are generated by the plasma cells, and once these secreted, they attach quickly to the surface of the toxin and stop the toxin from infecting the normal body cell by blocking key extracellular sites.
Antibodies also help to mark pathogens for destruction by the help of macrophages or neutrophils and they are known as phagocytic cells because they are highly excited to macro-molecules complexed with antibodies.
Answer:
C. An organism must copy its DNA to pass genetic information to its offspring
Explanation:
Without the copying of the DNA life would not continue as existing organisms would not be able to reproduce and replace themselves.
The sewing needle should float in the water if placed on a horizontal angle if I remember properly.
I hope this helps in some way.
Answer:When a cell divides by way of meiosis, it produces four cells, called gametes.
Explanation:
nutrition is the answer bcz without nutrition the diseases will effect more in a population
