Q: What are known as the building blocks of proteins? Choices: - organism acids - protein acids - bases - amino acids A:
amino acids

Q: Why do electronegativities decrease from top to bottom? Choices: - smaller atomic size - larger atomic variation - larger electric pull - larger atomic size A:
larger atomic size

Q: The extent to which a substance may be dissolved in water or another solvent is known as what? Choices: - humidity - flexibility - turbidity - solubility A:
solubility

Q: On a hot, dry day, plants close their stomata to conserve what? Choices: - sunlight - air - cold - water A:
water