Q: What does phagocytosis defend the body from? Choices: - allergies - obesity - parasites - pathogens A:
pathogens

Q: What is a mass spectrometer used to measure? Choices: - partial atomic masses - subatomic masses - optical atomic masses - relative atomic masses A:
relative atomic masses

Q: Two water molecules contain 4 hydrogen atoms and how many oxygen atoms? Choices: - 1 - 4 - 6 - 2 A:
2

Q: What do organisms use to grow and repair themselves? Choices: - diffusion - mutation - cell solution - cell division A:
cell division