Q: What part of the body does hepatitis b effect? Choices: - kidney - joints - heart - liver A:
liver

Q: The explosion of nitroglycerin, which releases large volumes of gases, is what type of reaction? Choices: - energetic - exponential - endothermic - exothermic A:
exothermic

Q: Q: Calculations are described showing conversions between molar mass and what for gases? Choices: - volume - length - weight - density A:
A: density

Question: Q: Initial substances are called reactants, and the final substances are called what? Choices: - exports - imports - reactors - products A:
Answer: products

*Question*
Q: What category of food includes sugars, starches and fibers? Choices: - enzymes - proteins - alcohols - carbohydrates A:
**Answer**
carbohydrates

*Question*
Q: Morphological and molecular data indicate that wings evolved how many times in insects? Choices: - many times - twice - never - once A:
**Answer**
once