Q: In science, what is defined as the transfer of energy from a vibrating object in waves that travel through matter? Choices: - energy - photons - vibration - sound A:
sound
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Q: What powerful microscopes use a beam of subatomic particles instead of a beam of light? Choices: - complex microscopes - scientific microscopes - nuclear microscopes - electron microscopes A:
electron microscopes
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Q: By what kind of change can a chemical change be reversed? Choices: - another carbon change - another thermal change - another radioactive change - another chemical change A:
another chemical change
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Q: Just as millions of different words are spelled with our 26-letter english alphabet, millions of different proteins are made with the 20 common what? Choices: - mutation acids - peptides - enzymes - amino acids A:
amino acids
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