The atomic number of oxygen is 8. the atomic mass of oxygen is 16. how many neutrons does oxygen have?

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

Select the correct answer from each drop-down menu proteins are

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen