Science MCQs
Practice multiple choice questions with instant feedback. Select an option to see if you're correct.
What is the ability of an organism's body to defend itself against disease-causing organisms called?
Which of the following is a disease-causing microorganism?
What is the entry and growth of microorganisms into the body called?
Which of these is a physical barrier against pathogens?
What is the thick fluid produced by mucous membranes called?
Which part of the body filters dust and microbes from the air?
What does saliva in the mouth contain that kills microorganisms?
Which acid in the stomach kills pathogens present in food?
What is the process of ingesting and eliminating foreign substances by cells called?
Which cells perform the function of phagocytosis?
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