Oxygen has an atomic number of 8. What can you conclude from this fact? * 1 point
A. An atom of oxygen has 8 positrons.
B. An atom of oxygen has 4 protons and 4 electrons.
C. An atom of oxygen weighs 8 grams.
D. An atom of oxygen has 8 protons.

I said B, is that correct?

Depending on the organism the number of in a cell may change

What molecules does hemoglobin decay into over time

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen