You are exposed to the same pathogen twice in your lifetime. Which of the following is true?

A.) Your body will fight the second exposure much slower because it has already
used up all its antibodies against that antigen.

B.) The reaction times will be almost equal.

C.) You cannot be exposed to the same pathogen twice in your life because you
already destroyed those pathogens with your Killer T cells.

D.) Your body will fight the second exposure much quicker because it has stored
memory cells against that specific antigen.

the answer would be D

Explanation:

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.