1. Biology: Viruses cause disease. What name is given to microorganisms that cause disease?
2. Biology: How do viruses cause the symptoms of disease?
3. Biology: A vaccine can protect humans from a viral disease. What does the vaccine contain?
4. Chemistry: Substance A contains only one type of atom. Substance A does not conduct electricity. Which type of substance is A?
5. Chemistry: This question is about acids and alkalis. Which ion do acids produce in aqueous solution?
6. Chemistry: Acids react with alkalis. What is the name of this type of reaction?
7. Physics: What is meant by an electric current?
8. Physics: A radioactive source emits alpha, beta and gamma radiation. An alpha particle is the same as a helium nucleus. How many times bigger is the radius of a helium atom than the radius of an alpha particle?
9. Biology: A human body cell contains 46 chromosomes. How many chromosomes does a human sperm cell contain?
10. Biology: A fossil was found in rocks. The rocks were formed from mud. The fossil is of the fungus Ourasphaira giraldae. What is the genus of the fungus?
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