Marburg virus is a blood-borne pathogen. People who have the virus are sometimes given heparin, a protein that is involved in clotting blood. Which type of blood-borne disease is Marburg virus?

hepatitis B

HIV

viral hemorrhagic fever

hepatitis C

Which of the following represents the chemical reaction of hydrazine and hydrogen peroxide to produce nitrogen and water? a. nitrogen + hydrogen peroxide → hydrazine + water b. nitrogen + water → hydrazine + hydrogen peroxide c. hydrazine + hydrogen peroxide → nitrogen + water d. water + hydrogen peroxide → nitrogen + hydrazine

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

How does secondary succession differ from primary succession?