Q: Much of the iron produced is refined and converted into what? Choices: - plastic - wood - sugar - steel A:
steel

Q: How does burning matter affect its mass? Choices: - the mass quadruples - the mass increases - the mass decreases - the mass remains the same A:
the mass remains the same

Q: Q: What is the name for biochemical compounds that consist of one or more chains of small molecules called amino acids? Choices: - lipids - protons - hormones - proteins A:
A: proteins

Question: Q: In physics, resistance is opposition to the flow of what? Choices: - temperature charges - capacitance - surface flow - electrical charges A:
Answer: electrical charges

*Question*
Q: Smoking increases the risk of cancer from what radioactive gas that can also be detected with a test kit for your home? Choices: - arsenic - carbon monoxide - carbon dioxide - radon A:
**Answer**
radon

(Q).
Q: What are vesicles made of? Choices: - cells - membranes - filaments - phospholipids A:
(A).
phospholipids