Q: The total number of protons and neutorns in an atom is called what? Choices: - atom number - volume number - formation number - mass number A:
mass number

Q: The body's second line of defense against pathogens includes which response? Choices: - reaction - anxiety - blood - inflammatory A:
inflammatory

Q: Q: What exposure risk comes with aerobic respiration? Choices: - helium toxicity - carbon toxicity - nitrogen toxicity - oxygen toxicity A:
A: oxygen toxicity

Question: Q: What is the primary cause of air movement in the troposphere? Choices: - solar winds - asteroids - the ozone layer - differences in heating A:
Answer: differences in heating

*Question*
Q: Carbon dioxide molecules consist of a central carbon atom bonded to how many oxygen atoms? Choices: - one - four - three - two A:
**Answer**
two

Q: Q: Sister chromatids separate as part of anaphase in what process? Choices: - osmosis - vesicles - angiogenesis - mitosis A:
A: mitosis