The answer would be D.nucleus, prokaryotic cells don’t have a nucleus instead their dna floats around inside the cell
A contusion occurs when a strong blow or repeated blows from an object struck the body, crushing the underlying muscle fibres and connective tissues without breaking the skin.
A contusion can vary in severity depending on the object and location of the injury. For example a contusion to the brain may cause a concussion that can cause serious symptoms that require immediate medical attention
I think the answer is most likely A
Answer:
Acquired immunity is immunity you develop over your lifetime. It can come from: a vaccine. exposure to an infection or disease. another person's antibodies (infection-fighting immune cells
