Ques:Q: How many cycles do cells have? Choices: - six - two - seven - four A:

Ans:four
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Ques:Q: What term is used to describe the process of removing wastes and excess water from the body? Choices: - diffusion - digestion - aeration - excretion A:

Ans:excretion
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Ques:Q: When atoms gain or lose electrons, what is formed? Choices: - crystals - molecules - gas - ions A:

Ans:ions
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Ques:Q: Common disease of what system include asthma, pneumonia, and emphysema? Choices: - the fecal system - the digestive system - the glandular system - the respiratory system A:

Ans:
the respiratory system
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