Q: What disease associated with smoking involves breakdown of walls of the alveoli, resulting in less gas exchange by the lungs? Choices: - leukemia - cancer - pneumonia - emphysema A:
emphysema

Q: What basic units are neither created nor destroyed during a chemical change, but are instead rearranged? Choices: - particles - molecules - Electrons - atoms A:
atoms

Q: Q: A small molecule that binds to a larger molecule is known as a? Choices: - lipid - enzyme - oxide - ligand A:
A: ligand

Question: Q: What sort of issues can be determined by looking for certain particles in amniotic fluid? Choices: - artificial disorders - organic disorders - impossible disorders - genetic disorders A:
Answer: genetic disorders

*Question*
Q: Genetic disorders are diseases caused by what? Choices: - lesions - environment - traits - mutations A:
**Answer**
mutations

*Question*
Q: What are metals and good electrical conductors that tend to lose their valence electrons in chemical reactions called? Choices: - stable metals - conservants - precious metals - reductants A:
**Answer**
reductants