Q: What orbits an atoms' nucleus? Choices: - neutrally charged ions - positively charged protons - isotopes - negatively charged electrons A:
negatively charged electrons
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Q: Storm surge is very high water located in the low pressure eye of what? Choices: - earthquakes - eruptions - tornados - hurricanes A:
hurricanes
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Q: Female monotremes share what external opening with reptiles and birds? Choices: - urethra - vagina - anus - cloaca A:
cloaca
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Q: What helps the plasma membrane keep its shape? Choices: - molecules of carbohydrates - molecules of oxygen - cytoplasm - molecules of cholesterol A:
molecules of cholesterol
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